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.