Science Daily  August 12, 2020 Until now, quantum researchers have tried to fix errors by adding greater redundancy. Instead of multiple physical qubits needed to maintain one effective qubit, an international team of researchers (Switzerland, USA – UT Austin) propose a single cat qubit that can prevent phase flips all by itself. It encodes an effective qubit into superpositions of two states within a single electronic circuit — in their case a superconducting microwave resonator whose oscillations corresponds to the two states of the cat qubit. They applied microwave frequency signals to a device that is not significantly more complicated […]