Quantum error correction with dissipatively stabilized squeezed-cat qubits

被引:17
|
作者
Hillmann, Timo [1 ]
Quijandria, Fernando [2 ]
机构
[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci, S-41296 Gothenburg, Sweden
[2] Okinawa Inst Sci & Technol Grad Univ, Quantum Machines Unit, Onna Son, Okinawa 9040495, Japan
关键词
2-PHOTON COHERENT STATES; SUPERPOSITION; ENTANGLEMENT;
D O I
10.1103/PhysRevA.107.032423
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Noise-biased qubits are a promising route toward significantly reducing the hardware overhead associated with quantum error correction. The squeezed-cat code, a nonlocal encoding in phase space based on squeezed coherent states, is an example of a noise-biased (bosonic) qubit with exponential error bias. Here we propose and analyze the error correction performance of a dissipatively stabilized squeezed-cat qubit. We find that for moderate squeezing the bit-flip error rate gets significantly reduced in comparison with the ordinary cat qubit while leaving the phase-flip rate unchanged. Additionally, we find that the squeezing enables faster and higherfidelity gates.
引用
收藏
页数:13
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