[15a-K406-1~11] KS.2 Quantum Information Engineering Group

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[15a-K406-6] Encoding high-order binominal code using superconducting cavity

〇Takumi Mikawa¹, Takaaki Takenaka¹, Kosuke Kakuyanagi¹, Shiro Saito¹ (1.NTT-BRL)

Keywords:

superconducting quantum circuit,Bosonic code,binomial code

Bosonic code, which encodes quantum information into Fock states in a cavity, provide hardware-efficient quantum error correction (QEC). In particular, the first-order binomial code can correct only one-photon-loss error, but the second-order binomial code can correct two-photon-loss error. However, the QEC using second-order binomial code has not been realized because it requires three-parity measurement. Recently, three-parity measurement has been proposed. In this work, we aim at encoding the second-order binomial code to realize the QEC against one- and two-photon-loss errors.