Quantum Seminar: Quantum Error Correction Beyond Break Even Using Microwave Photons

Zoom: https://tau-ac-il.zoom.us/j/82245900781

Abstract:

Hybrid platforms comprised of superconducting qubits and microwave oscillators (bosonic modes) offer powerful architectures with novel gates and instruction sets for quantum computation, quantum simulation, and hardware-efficient quantum error correction. Several different experiments using ‘bosonic codes’ have now exceeded the break-even point for the first time in any technology. I will describe a recent experiment from the Devoret group using the GKP bosonic code, that achieved a record quantum error correction gain through a combination of improved qubit coherence times, a new protocol to semi-autonomously ‘cool’ the oscillator into the code space removing the entropy associated with errors, and a novel machine learning agent that optimized 45 parameters in the experiment.