论文标题
量子误差校正，散发稳定的挤压猫码头
Quantum error correction with dissipatively stabilized squeezed cat qubits
论文作者
论文摘要
噪声偏向量子位是一条有前途的途径，可以显着减少与量子误差校正相关的硬件开销。挤压的猫代码是一种基于挤压相干状态的相空间中的非本地编码，是噪声偏见（玻璃体）量子的示例，具有指数误差偏置。在这里，我们提出并分析了耗散稳定的挤压猫量子的误差校正性能。我们发现，对于中等挤压，与普通的猫量子保持相比，位叉状误差率显着降低，同时使相位翻转速率保持不变。此外，我们发现挤压可以实现更快，更高的前保大门。
Noise-biased qubits are a promising route toward significantly reducing the hardware overhead associated with quantum error correction. The squeezed cat code, a non-local 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 higher-fidelity gates.
