One problem with quantum computers is that they have a high error rate Connie Zhou/IBM IBM has managed to dramatically reduce the number of quantum bits, or qubits, required to prevent errors in a quantum computer. Its latest approach to quantum error correction should bring down the number of qubits needed to build a useful … Read more
Fluxonium qubits could make quantum computers more useful Bartlomiej K. Wroblewski/Alamy A superconducting qubit, or quantum bit, has broken the record for how long it can maintain its quantum properties. Extending this time will make future quantum computers more useful. The first step in building a quantum computer is choosing how to make its key … Read more
Google’s quantum computer (left) can correct its own errors FREDERIC J. BROWN/AFP via Getty Images Google has demonstrated that its approach to quantum error correction – seen as an important part of developing useful quantum computers – is scalable, giving researchers at the company confidence that practical devices will be ready in the coming years. … Read more
Companies such as IBM offer timeshare access to prototype quantum computers, but researchers have shown that they can access other users’ data on these machines Technology 16 November 2022 By Matthew Sparkes Like a tin-can telephone, quantum computers are vulnerable to eavesdropping Westend61 GmbH / Alamy Stock Photo Hackers could steal sensitive data from … Read more
By Matthew Sparkes Quantum computers may be the perfect tool for designing quantum computers sakkmesterke/Shutterstock A quantum computer has been used to design an improved qubit that could power the next generation of smaller, higher-performance and more reliable quantum computers. Exploiting the ability of quantum processors to simulate the behaviour of quantum circuits that classical … Read more
By Matthew Sparkes A new quantum network in Hefei, China, runs on fibre-optic cables asharkyu/Shutterstock A city-wide quantum communications network in Hefei, China, that has been running for almost three years is the largest demonstration to date of how a future quantum internet might work. The network, created by Teng-Yun Chen at the University of … Read more