论文标题
超导体 - Quantum dot杂种中的Higgs样对振幅动力学
Higgs-like pair amplitude dynamics in superconductor-quantum dot hybrids
论文作者
论文摘要
我们认为量子点弱隧道与超导储层相连。可以通过接近效应在DOT上诱导有限的超导对振幅。我们通过实时示意方法研究了淬灭后并在系统周期性驾驶后研究诱导对振幅的动力学。我们发现，淬灭动力学是由对平衡的指数衰减所支配的，相比之下，定期驱动的系统可以维持诱导对振幅的振幅和相位的相干振荡，以与Higgs和Higgs和Nambu-Goldsone模式相比。
We consider a quantum dot weakly tunnel coupled to superconducting reservoirs. A finite superconducting pair amplitude can be induced on the dot via the proximity effect. We investigate the dynamics of the induced pair amplitude after a quench and under periodic driving of the system by means of a real-time diagrammatic approach. We find that the quench dynamics is dominated by an exponential decay towards equilibrium In contrast, the periodically driven system can sustain coherent oscillations of both the amplitude and the phase of the induced pair amplitude in analogy to Higgs and Nambu-Goldstone modes in driven bulk superconductors.
