[9p-N304-1~15] KS.2 Quantum Information Engineering Group

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[9p-N304-7] Encoding and gate operations of binominal code using superconducting cavity

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

Keywords:

superconducting quantum circuit,quantum error correction,Bosonic 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 [bin(1, 1)] does not require large photon number states, and thus, is expected to provide high-fidelity encoding and gate operations. In this work, we aim at impoving the fidelities of the encoding and the gate operations for bin(1, 1) by qualifying the contribution of the self-Kerr and 2nd-order dispersive terms.