Physics World: Quantum mechanical wormholes fill gaps in black hole entropy

A new theoretical model could solve a 50-year-old puzzle on the entropy of black holes. Developed by physicists in the US, Belgium and Argentina, the model uses the concept of quantum-mechanical wormholes to count the number of quantum microstates within a black hole. The resulting counts agree with predictions made by the so-called Bekenstein-Hawking entropy formula and may lead to a deeper understanding of these extreme astrophysical objects.

Physics World: MEPs call for ‘urgent action’ to implement post-quantum encryption standards

Twenty members of the European Parliament have called for urgent action to develop a new standard for data encryption that would protect against quantum computers being used for malicious purposes. In their letter, the members urge the European Commission to develop security measures and regulations to ward off the threat of quantum computers for cybercrime and data breaches.

Physics World: New ion trapping approach could help quantum computers scale up

Trapping ions with static magnetic and electric fields instead of an oscillating electromagnetic field could make it easier to use ions as building blocks for quantum computers. The new approach, which was developed by researchers at ETH Zurich in Switzerland, allows better control of an ion’s quantum state and position, and marks an important step towards scaling up trapped ions as a platform for quantum computation.

Physics World: Can a classical computer tell if a quantum computer is telling the truth?

Quantum computers can solve problems that would be impossible for classical machines, but this ability comes with a caveat: if a quantum computer gives you an answer, how do you know it’s correct? This is particularly pressing if you do not have direct access to the quantum computer (as in cloud computing), or you don’t trust the person running it. You could, of course, verify the solution with your own quantum processor, but not everyone has one to hand.

Nederlands Tijdschrift voor Natuurkunde: Zwaartekrachtgolf detector LISA gaat met Nederlandse technologie de ruimte in

De Europese Ruimtevaartorganisatie ESA heeft groen licht gegeven voor de lancering van de zwaartekrachtgolfdetector LISA: een uiterst complexe ruimtemissie met een flinke Nederlandse inbreng. LISA moet nieuwe kennis op gaan leveren over onder andere zwarte gaten, de oerknal en donkere materie.

Physics World: Quantum-secure online shopping comes a step closer

Online shopping boomed during the pandemic, but it remains vulnerable to scams involving both buyers and sellers. Quantum communication could, in principle, add another layer of security, but verifying a transaction securely, rather than simply communicating it, requires a “signature” consisting of thousands of quantum bits (qubits) for a single bit of message.

Nederlands Tijdschrift voor Natuurkunde: Pionierend experiment houdt spingolven onder controle

Een baanbrekend experiment bij de TU Delft laat voor het eerst zien dat magnetische golven, spingolven genaamd, door middel van supergeleiders beheersbaar zijn. Spingolven hebben de potentie om elektrische apparatuur efficiënter te maken of om als connectoren in een quantumcomputer te dienen. Het resultaat zet daarmee een flinke stap richting toepassingen van dit natuurkundige fenomeen.

Physics World: Entangled molecules make a novel qubit platform

Ultracold molecules are a step closer to being a viable platform for quantum technology thanks to two independent teams of researchers who showed they could entangle pairs of molecules and encode them as quantum bits (qubits). Because molecules offer new ways to encode quantum information and can interact with each other over long distances, the two works offer new possibilities in quantum computing and quantum simulations beyond those provided by other types of qubits.

Physics World: Quantum simulator visualizes large-scale entanglement in materials

Physicists in Austria have found a quick and efficient way of extracting information on a quantum material’s large-scale entanglement structure thanks to a 50-year-old theorem from quantum field theory. The new method could open doors in fields such as quantum information, quantum chemistry or even high-energy physics.

Physics World: Quantum entanglement observed in top quarks

Physicists working on the ATLAS experiment at CERN have observed entanglement between pairs of top quarks for the first time. The finding demonstrates that entanglement can occur at energies more than 12 orders of magnitude higher than is typical for laboratory entanglement experiments. They also show that particle-physics facilities such as CERN’s Large Hadron Collider (LHC) can be used to study quantum mechanics and quantum information.

Physics World: Scalable quantum processor simulates non-equilibrium phase transitions

A 20-qubit quantum processor has been used to simulate the classical and quantum nature of non-equilibrium phase transitions. The work was done by researchers in the US and Canada, who used a processor made by Quantinuum, which is based in the UK and US. The team’s success suggests that small-scale quantum processors could soon be solving some problems that are beyond the capability of conventional computers – an achievement called quantum advantage. This advantage could be put to use in fields including condensed matter, quantum optics and metrology.

Physics World: Quantum mechanics and thermodynamics can both be true, say physicists 

Physicists in the Netherlands and Germany have shown that the theories of thermodynamics and quantum mechanics are both valid ways of describing the behaviour of photons in a quantum processor. The results, obtained by researchers at the University of Twente and the Freie Universität Berlin, open the door to a deeper understanding of how to reconcile these two great theories.

Physics World: IBM’s 127-qubit processor shows quantum advantage without error correction

A 127-qubit quantum processor has been used by an international team of researchers to calculate the magnetic properties of a model 2D material. They found that their IBM quantum computer could perform a calculation that a conventional computer simply cannot, thereby showing that their processor offers quantum advantage over today’s systems – at least for this particular application. What is more, the result was achieved without the need for quantum error correction.

Physics World: Quantum repeater transmits entanglement over 50 kilometres 

Physicists at the Universities of Innsbruck in Austria and Paris-Saclay in France have combined all the key functionalities of a long-distance quantum network into a single system for the first time. In a proof-of-principle experiment, they used this system to transfer quantum information via a so-called repeater node over a distance of 50 kilometres – far enough to indicate that the building blocks of practical, large-scale quantum networks may soon be within reach.

Physics World: Sony announces venture into quantum computing via UK firm Quantum Motion 

The Japanese electronics giant Sony has announced its first steps into quantum computing by joining other investment groups in a £42m venture in the UK quantum computing firm Quantum Motion. The move by the investment arm of Sony aims to boost the company’s expertise in silicon quantum chip development as well as to assist in a potential quantum computer roll-out onto the Japanese market.

Physics World: Australia sets out A$1bn national quantum strategy

Australia has launched its first national quantum strategy with the aim of becoming a global player in quantum technologies by the end of the decade. Released by the Department of Industry, Science and Resources, the A$1bn initiative aims to boost Australia’s economy, protect the country’s national security and prevent a brain drain of top people heading abroad.

Physics World: Germany reveals €3bn plan to build a quantum computer by 2026

The German government says it will spend €3bn over the next three years to build a universal quantum computer. The project is part of a new initiative to make Germany competitive with countries that have already built or are taking steps to construct such a device. It is hoped the cash will boost the German economy and place the country at the top of quantum developments in the European Union.

Physics World: Breakthrough in quantum error correction could lead to large scale quantum computers

Researchers at Google Quantum AI have made an important breakthrough in the development of quantum error correction, a technique that is considered essential for building large scale quantum computers that can solve practical problems. The team showed that computational error rates can be reduced by increasing the number of quantum bits (qubits) used to perform quantum error correction. This result is an important step towards creating fault tolerant quantum computers.

Physics World: Interactions between ultracold molecules controlled by physicists

A way of colliding ultracold molecules while controlling the rate at which they react has been developed by physicists at the Massachusetts Institute of Technology (MIT) in the US. Researchers at Germany’s Max Planck Institute for Quantum Optics have made a similar discovery using an different experimental technique. Their research opens new pathways for enhanced control of chemical reactions.

Physics World: Europe is at the forefront of quantum-based technologies, says report

Europe is leading the race to implement quantum-based technologies, according to a new report from the European Commission. The report examines the state of the 10-year €1bn Quantum Technologies Flagship programme, which began in 2018. It aims to boost quantum research in Europe as well foster the implementation of quantum technologies such as quantum sensing, communication and computation.

Nederlands Tijdschrift voor Natuurkunde: De James Webbruimtetelescoop ontrafelt de chemie in de atmosfeer van exoplaneet WASP-39b

Een internationaal team van astronomen laat met hun early release science-data zien waar de James Webb-ruimtetelescoop toe in staat is. Zij brachten voor het eerst de chemische samenstelling van de atmosfeer van een exoplaneet zeer duidelijk in kaart. De kennis die sterrenkundigen hebben verkregen door onderzoek te doen naar de atmosfeer zal in de toekomst kunnen helpen om te zoeken naar eventueel leven op andere rotsachtige planeten.

Physics World: Telescope with large aperture metalens images the Moon

An important step towards the practical use of optical metasurfaces has been taken by researchers in the US. The team used a common semiconductor manufacturing process to produce a large aperture, flat metalens. Its optical performance was demonstrated by using it as the objective lens in a simple telescope that was aimed at the Moon. The telescope achieved superior resolving power and produced clear images of the surface of the Moon.

Physics World reveals its top 10 Breakthroughs of the Year for 2022 

Physics World revealed its top 10 breakthroughs of the year 2022 and this includes two articles written by Cool Science Blog! The breakthroughs for a new era in ultracold chemistry, that now allows more complex molecules to be created. This type of research can be used to study ultracold reactions, for quantum simulations or to test fundamental physics.

Nederlands Tijdschrift voor Natuurkunde: Nieuw onderzoek brengt Aarde-Maansysteem van 2,5 miljard jaar geleden aan het licht

Onze Maan is het enige hemellichaam dat in baantjes rond de Aarde draait. Maar de Maan draait ook steeds verder van ons weg, wat betekent dat ze miljarden jaren geleden een stuk dichter bij de Aarde stond. Hoeveel dichterbij, dat was tot nu toe moeilijk vast te stellen. Nieuw onderzoek gaat een miljard jaar verder terug dan voorgaand onderzoek en laat ons de toestand en evolutie van het vroegere AardeMaansysteem zien.

Physics World: Quantum teleportation opens a wormhole in spacetime

The equivalent to a wormhole in spacetime has been created on a quantum processor. Researchers in the US used an advanced quantum teleportation protocol to open the wormhole and send quantum signals through it. By studying the dynamics of the transmitted quantum information, the team gained insights into gravitational dynamics. The experiment could be further developed to explore quantum gravity or string theory.

Physics World: Report calls on the UK to show ambition in the development of quantum technologies

The UK government must be bold and ambitious to position the country as a world leader in the global quantum technologies market. So says a new report released last month by the Institute of Physics (IOP), which also calls for quantum start-up firms in the UK to be supported to allow research institutes to spin out quantum businesses more easily.

Physics World: Double dose of quantum weirdness pushes sensors past the limit

For most people, quantum mechanics seems pretty weird. Take the principle of delocalization, which states that a quantum particle can, in some sense, exist simultaneously in multiple locations. Then there’s entanglement: the invisible connection between particles that allows the state of one particle to determine that of another, even across vast distances. But as weird as delocalization and entanglement are, they can be very useful, and physicists at JILA in Boulder, Colorado, US have now incorporated both into a single quantum sensor for the first time. The new sensor can detect accelerations below the usual limit set by noise arising from quantum fluctuations, providing a sharper tool for exploring fundamental physics as well as for applications such as navigation and Earth monitoring.

Physics World: Six qubit silicon quantum processor sets a record

A team of researchers in the Netherlands has placed a record number of silicon spin qubits on a chip. By combining an advanced modular software stack, efficient calibration routines and reliable device fabrication, the researchers showed that they could operate the new six-qubit chip with high fidelity, clearing the way for even larger qubit numbers in silicon-based devices.

Nederlands Tijdschrift voor Natuurkunde: Aanstaande industriële nanorevolutie dankzij nanoturbines van DNA

Onderzoekers van de Technische Universiteit Delft hebben voor het eerst een intrinsiek gedreven nanoturbine ontwikkeld, die in groot contrast staat met de huidige extern aangedreven nanomotoren. Ze gebruiken hiervoor een zelforganiserend proces van DNA dat zich ontvouwt tot een propellor die in de vloeistofstroming van een nano-porie roteert en daarmee arbeid verricht. Deze ontdekking is een
enorme stap vooruit voor synthetische nanomotoren die bijvoorbeeld gebruikt kunnen worden voor robotica op de nanoschaal.

Nederlands Tijdschrift voor Natuurkunde: De continue-atoomlaser eindelijk in zicht dankzij ‘oneindig’ Bose-Einstein-condensaat

Onderzoekers van de Universiteit van Amsterdam hebben voor het eerst de basis van een continu-atoomlaser gelegd. Dit type lasers kan voor een doorbraak zorgen in ultra-precisiemetingen en kan bijvoorbeeld worden gebruikt voor metingen aan zwaartekrachtgolven of voor het vinden van donkere energie en materie.

Physics World: Device independent QKD brings unhackable quantum internet closer

Two independent research groups have demonstrated a protocol for distributing quantum-encrypted keys via a method that is sure to leave would-be network hackers in the dark. The protocol, dubbed device independent quantum key distribution, was first proposed three decades ago but had not been realized experimentally before due to technical limitations, which the researchers have now overcome.

Physics World: Aliens could use quantum signals to communicate with Earth

The Search for Extraterrestrial Intelligence (SETI) might want to add quantum communication to its list of ways for aliens to get in touch. According to calculations by researchers at the University of Edinburgh in the UK, quantum signals would be a viable means of establishing contact across interstellar distances – a result that also suggests we might need to update our technology to recognize any such signals coming in our direction.

Nederlands Tijdschrift voor Natuurkunde: Van chaos tot orde in de wetenschap van zeespiegelprojecties

De zeespiegel gaat stijgen, dat staat vast. Onderzoek naar klimaatverandering laat zien dat we de komende decennia een onvermijdelijke stijging in zeewaterniveau kunnen verwachten. Maar hoe groot de verwachte stijging is, hangt af van het type model dat gebruikt wordt voor de voorspelling, waarbij soms een zelfde set van data verschillende conclusies geeft. Dit is niets nieuws in de wetenschap, aangezien de complexiteit van grootschalige systemen, zoals het klimaat, zich niet makkelijk laat modelleren. Maar het maakt het er niet makkelijker op voor de beleidsmakers die ervoor moeten zorgen dat we goed voorbereid zijn, want je kunt je beslissing niet elke keer aanpassen als er een nieuwe publicatie uitkomt.

Physics World: Laser cooling of polyatomic molecules brings ultracold chemistry into the spotlight

Physicists in the US have created ultracold polyatomic molecules by trapping and cooling them directly in three dimensions. Led by John Doyle at Harvard University, the team used a standard device known as a magneto-optical trap (MOT), plus additional laser cooling techniques, to reduce the temperature of a sample of calcium hydroxide (CaOH) molecules to just 110 µK. By showing that direct laser cooling is possible, the result opens the door to experiments in molecule-based quantum simulation and studies of chemical reactions involving polyatomic molecules.

Physics World: Quantum teleportation expands beyond neighbouring nodes

Physicists in the Netherlands have shown for the first time that quantum information can be reliably teleported between network nodes that are not directly connected to each other. According to the researchers, who created the world’s first three-node quantum network at QuTech (a collaboration between the Delft University of Technology and TNO) in 2021, the latest work marks a further step towards a scalable quantum Internet.

Physics World: Netherlands invests E1.1bn in the photonic chip industry

The Dutch photonic chip industry has been boosted with €1.1bn of public and private investment. The cash, which includes €470m from the Dutch government’s National Growth Fund, will be used by PhotonDelta over six years to create hundreds of photonic start-up companies and scale up photonic-chip production to encourage development of new photonic applications.

Physics World: Quantum Error Correction makes its zero magnetic field debut

Researchers in Japan have developed a way of correcting errors in quantum operations without applying a magnetic field. The new zero-field technique, which they demonstrated using quantum bits (qubits) constructed from atomic-scale imperfections in diamond, could make it possible to integrate such qubits with others based on superconducting circuits, and thereby construct larger and more powerful quantum devices.

Link Magazine: Bouwstenen voor quantumcomputers klaar voor massaproductie

Onderzoekers van QuTech (een samenwerking van TNO en TU Delft) en Intel hebben voor het eerst de bouwstenen van een quantumcomputer, genaamd qubits, gemaakt met dezelfde industriële productiefaciliteiten waarmee ook conventionele computerchips in massa worden geproduceerd. Hun resultaten zijn gepubliceerd in het wetenschappelijke tijdschrift Nature Electronics.

Inside Quantum Technology: How Dutch ecosystems help the progress of quantum technology

“Many hands make light work”. It’s an expression that is embedded in Dutch culture. And this is not different when it comes to quantum technology developments in the Netherlands. With only a population of 17 million people, the country is ranked third for scientific citations in quantum research and has the highest number of quantum based startups per capita in the world. This is a bit surprising, as it’s lacking big research funding or VC investments as those found in other countries, such as the US. However, strategic funding, such as the National Growth Fund that aims to boost the Dutch economy, can still make an impact. Because when making ideal use of the country’s small size, one can use its infrastructure for setting up a quantum ecosystem.

Physics World: Silicon spin qubits manufactured on an industrial scale

Researchers in the Netherlands and the US have shown for the first time that qubits – the building blocks of quantum computers – can be mass-produced using standard processes developed for manufacturing conventional integrated circuits. The breakthrough paves the way for developing powerful quantum machines that require thousands or even millions of identical qubits for full-scale operation.

Physics World: Fast electrons accelerate the production of medical isotopes

A new method for producing medical radioisotopes has passed its first milestone, by exposing a target to an electron beam at energy densities several orders of magnitude higher than found at the core of the Sun. This achievement paves the way for alternative radioisotope production methods using electron accelerators that do not require enriched uranium and produce little nuclear waste.

Physics World: Time crystals on a quantum computer reach a record size

Researchers in Australia have created the largest time crystal to date, using 57 qubits on an openly accessible IBM quantum computer to construct an exotic phase of matter with properties that repeat over time, rather than in space. The result emphasizes the utility of quantum computers for simulating complex quantum systems and marks an important step towards creating even larger systems of time crystals.

Physics World: New Dutch childcare programme to support ‘quantum mothers’

Two Dutch organizations have teamed up to announce a programme to help new mothers continue working in quantum technologies. The Quantum Childcare Pilot Programme is funded by the Dutch organization Quantum Delta NL and the professional body Women in Quantum Development (WIQD) and is aimed at women working in quantum-related fields in the Netherlands. It will offer grants to help parents find childcare so they can attend quantum-related events and conferences.

Physics World: Engineered disorder makes ultrathin solar cells ultra efficient

Ultrathin solar cells have reached record-breaking efficiency thanks to a novel manufacturing method that introduces specific types of disorder within the cells’ nanocrystalline structure. The low cost, reduced mass and non-toxic nature of this type of cell makes them ideal for integration into cars, rooftops or mobile devices, and the newly streamlined way of manufacturing them paves the way for their large-scale production.

Physics World: Ultracold triatomic molecules herald a new frontier for the three body problem

Researchers in China have found strong evidence of ultracold triatomic molecules forming within a mixture of ultracold atoms and diatomic molecules. The result, if confirmed, would provide an ideal pathway to studying chemical reactions on an atomic scale, and could even allow physicists to perform quantum-mechanical simulations of the notoriously difficult three-body problem.

Physics World: Quantum entanglement boosts accuracy of industrial quality inspections

Industrial manufacturing is subject to stringent testing protocols aimed at guaranteeing the quality of the final product. In some circumstances, though, these methods are not sensitive enough to detect flaws, leading to incorrect determinations of quality. Researchers at the Istituto Nazionale di Ricerca Metrologica (INRiM) in Torino, Italy have now shown that alternatives based on quantum entanglement can produce more accurate assessments of “good” and “failed” products. Importantly, the INRiM team’s system uses relatively simple equipment, increasing the chances that it could be used in industrial settings.

Physics World: Frequency upconversion makes infrared light visible

A new way of converting infrared light into visible wavelengths could make it possible to detect and measure mid-infrared signals using cheap and efficient sensors like those found in mobile-phone cameras. The method, which was developed independently by two teams of researchers, could have applications in areas as diverse as personalized medicine, environmental monitoring and security.

Physics World: Atomically thin lasers shine for the first time at room temperature

A two-dimensional semiconductor crystal just three atomic layers thick has emitted laser-like light. Crucially, this emission happened at room temperature: a significant improvement over previous cryogenic experiments. Coherent light generation from these ultrathin crystals paves the way for creating novel nanolasers, as well as opening doors for an emerging field of two-dimensional materials called valleytronics.

Physics World: QuTech launches a browser for the quantum Internet

The event I attended on Friday caught my attention for several reasons. Billed as the Quantum Network Explorer (QNE) Launch, it took place in the Hague, the Netherlands, not far from where I live. In a year that has seen so much exciting progress on quantum networks, I was curious to find out what it involved. But I was also drawn by the event’s name, which made it sound a lot like Microsoft’s all-but-defunct web browser, Internet Explorer.

Physics World: Physicists create discrete time crystals in a programmable quantum simulator

Time crystals are special quantum systems that exhibit periodicity in time, just as crystalline materials are periodic in space. Since 2012, when they were first proposed theoretically, several groups have built experimental systems that demonstrate key characteristics of time crystals, but these results lacked a method to generally stabilize the time crystalline phase. An international team of researchers has now gone beyond previous experiments by creating a type of time crystal known as a discrete time crystal (DTC) out of a chain of programmable spin quantum bits (qubits). The new system exhibits a phenomenon known as many-body localization that prevents the DTC from heating up and thermalizing and is considered a “smoking gun” that demonstrates its status as a genuine time crystal.

Physics World: Laser-free trapping of heavy molecules opens an alternative route to new physics

The quest for physics outside the Standard Model often takes place at major accelerator facilities like CERN’s Large Hadron Collider or huge underground detectors for neutrinos, dark matter and other exotic particles. Researchers in the Netherlands have now opened an alternative front in this quest by developing a new laboratory-scale technique for trapping heavy neutral molecules. Such molecules are considered ideal candidates for detecting beyond-the-Standard-Model asymmetries in the electron’s electric dipole moment (eEDM), but previous methods were not capable of confining them. The technique therefore gives physicists a fresh set of tools for finding new physics.

Nobelprijs voor de Natuurkunde 2021 uitgelegd

De Nobelprijs voor Natuurkunde ging dit jaar naar drie natuurkundigen. Syukuro Manabe en Klaus Hasselmann ontvingen hun prijs voor “de fysieke modellering van het klimaat op aarde, het kwantificeren van variabiliteit en het betrouwbaar voorspellen van de opwarming van de aarde”. De derde natuurkundige Giorgio Parisi ontving zijn prijs voor “de ontdekking van het samenspel van wanorde en fluctuaties in fysieke systemen van atomaire naar planetaire schalen.” Dit is de officiële verklaring van het Nobelprijscomité. Het is veel informatie in een paar kleine zinnen en daardoor is het misschien een beetje moeilijk te begrijpen. Dus laat me proberen dit uit te leggen in wat gemakkelijker te begrijpen taal.

Physics Nobel prize 2021 explained

This year’s Physics Nobel prize went to three physicists. Syukuro Manabe and Klaus Hasselmann received their prize for “the physical modelling of Earth’s climate, quantifying variability and reliably predicting global warming”. The third physicist Giorgio Parisi received his prize for “the discovery of the interplay of disorder and fluctuations in physical systems from atomic to planetary scales.” This is the official explanation of the Nobel prize committee. It is a lot of information in a few small sentences and with that, it might be a bit difficult to understand. So let me try to explain this in some easier to understand language. 

Physics World: Afghan scientists fear for the future in war-torn country

Calls have been made to help scientists in Afghanistan after the country was plunged into chaos in August when the Taliban regime took power in the war-torn country. Universities and other educational institutions have already closed their doors and science education has ground to a halt. Some scientists have even fled abroad, believing themselves direct targets of the Taliban.

Physics World: Bose-Einstein condensates hit record low temperature

A new way of controlling the expansion of matter in a freely-falling Bose-Einstein condensate (BEC)has produced the coldest effective temperature ever measured: 38 pK (10 K) above absolute zero. The method, which allowed researchers in Germany and France to image the condensate’s evolution for more than two seconds, opens the door to enhanced measurements of the gravitational constant g and photon recoil, and could even offer an alternative mea

Physics World: European Union unveils new €7.5bn space deal

The European Space Agency (ESA) has unveiled a new space programme following a €7.5bn partnership deal with the European Union (EU). The investment, running from 2021 to 2027, accounts for approximately 20% of ESA’s total budget and will be spent designing new-generation navigation systems and programmes to boost the economy and provide a green and digital Europe. It will also support new initiatives in security and space commercialization, and offer new funding opportunities for entrepreneurship.

Technisch Weekblad: Een Nederlandse robot naar de maan

Afgelopen mei werd het officieel: een samenwerking tussen de TU Delft en TNO die als doel heeft om een Nederlandse robot naar de maan te sturen. De ontwikkeling van deze ‘Lunar Zebro’ robots is een inspirerend project, grotendeels uitgevoerd door studenten. Als het lukt is het een sterk staaltje technologie, met een flinke dosis Nederlandse trots. Staat er binnenkort een Nederlandse vlag op de maan?

Physics World: Is the quantum internet finally here?

If you’ve ever attended the premiere of a film or an event where a new type of car is presented, you’ll know that there’s a slight buzz of excitement that comes from not knowing what to expect. I’ve been feeling that buzz for the past two weeks, leading up to an event that promised a “world premiere live demonstration of the next step in quantum cryptography”. It was not that the whole event was clouded in mystery, as some small teasers were released leading up to it. Still, with all the recent developments on the quantum Internet, I was left wondering: what exactly is the “state of the art” they plan to demonstrate?

Bits&Chips: Aircision and TNO raise the bar for high speed, long distance laser communication

Aircision and TNO have completed their test of setting up fast data transmission links between two towers using laser beams. They succeeded in 10 Gb/s data transmission over a distance of 2.5 kilometers, which is considered an important landmark for ground-to-ground laser communication. This ‘fiber-optic-through-the-sky’ technology, named free-space optics, can now make its way into 5G broadband connectivity.

Technisch Weekblad: Goede Vraag. Zijn we wel goed beschermd tegen cyberaanvallen van quantumcomputers?

We verzenden tegenwoordig al onze informatie versleuteld. Dit doen we om onze gegevens niet in de verkeerde handen te laten vallen. Het proces achter de versleuteling, genaamd encryptie, zorgt ervoor dat zelfs de beste computer er miljoenen jaren over doet om de versleuteling te kraken. Maar er zijn tegenwoordig veel ontwikkelingen op het gebied van quantumcomputers, waarvan de verwachting is dat ze zeer complexe berekeningen kunnen oplossen en dus mogelijk de versleuteling kunnen kraken. Zijn onze digitale systemen eigenlijk wel beveiligd tegen aanvallen van quantumcomputers?

Physics World: Group plot quantum-safe future

A consortium of Dutch funders and institutes – including the Netherlands Organisation for Applied Scientific Research and the University of Technology Delft – as well as several industry partners, such as Microsoft and telecoms provider KPN, have announced a research partnership to study how to protect public digital infrastructures from the malicious use of quantum computers.

Physics World: Chemistry gets put to a quantum test

Chemical reactions are complex. Even if only a few molecules are involved, the final configuration will depend on a huge number of parameters – including, in principle, all the possible locations each electron in each atom can occupy as the reaction takes place. Calculating these trajectories is beyond the power of today’s best computers, but researchers led by Kang-Kuen Ni of Harvard University in the US have now demonstrated an alternative. By cooling molecules of potassium and rubidium down to a fraction of a degree above absolute zero, they reduced the number of possible reaction outcomes to just 57. They then probed all these outcomes down to the level of individual quantum states, paving the way for a better understanding of chemistry.

Technisch Weekblad: Levende producten printen met uniek materiaal op basis van algen

Wetenschappers aan de TU Delft hebben een robuust, maar tegelijkertijd flexibel materiaal gemaakt van levende algen. Zij gebruiken hiervoor 3D-printers, in combinatie met een nieuwe bioprinttechniek. Het materiaal is 100% organisch, biologisch afbreekbaar en kent veel toepassingen, zoals kunstmatige bladeren of levende sensoren.

Delftse Post: Onderzoekers printen levend materiaal

Wetenschappers aan de TU Delft hebben een levend materiaal gemaakt, dat tegelijkertijd stevig en flexibel is. Ze gebruikten levende, fotosynthetische algencellen die met behulp van een 3D-printer op het materiaal aangebracht werden. Het levende materiaal is 100% organisch en biologisch afbreekbaar en kan worden toegepast als kunstmatige bladeren of als levende sensoren.