Extending the qubit coherence times is a crucial task in building quantum information processing devices. In the three-dimensional cavity implementations of circuit QED, the coherence of superconducting qubits was improved dramatically due to cutting the losses associated with the photon emission. Next frontier in improving the coherence includes the mitigation of the adverse effects of superconducting quasiparticles. In these lectures, we review the basics of the quasiparticles dynamics, their interaction with the qubit degree of freedom, their contribution to the qubit relaxation rates, and approaches to control their effect.

中文翻译：

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超导量子比特中的 Bogoliubov 准粒子

延长量子位相干时间是构建量子信息处理设备的关键任务。在电路 QED 的三维腔实现中，由于减少了与光子发射相关的损耗，超导量子位的相干性得到了显着提高。提高相干性的下一个前沿领域包括减轻超导准粒子的不利影响。在这些讲座中，我们回顾了准粒子动力学的基础知识、它们与量子位自由度的相互作用、它们对量子位弛豫率的贡献，以及控制它们效果的方法。