量子金字塔控制：单个光子概率的选择性控制
Quantum Pyragas control: Selective-control of individual photon probabilities
摘要：
金字塔控制允许在应用非线性科学中稳定不稳定状态。我们建议应用一个量子版本的金字塔协议，以控制个人的光子概率，否则只能在全球范围内访问的量子光发射器的光子概率分布。量子金字塔控制的多功能性的情况下，两个级别的发射体在脉冲激光驱动的半腔。我们表明，单光子和双光子事件响应在一个定性不同的方式半腔诱导的反馈信号。单光子事件被增强或抑制，这取决于参数的选择。相比之下，对于所选的脉冲区域，双光子事件仅经历高达$50\%$的增强。在此，我们提出了一种通过时间延迟反馈设置的量子金字塔控制的实现。
英文摘要：
Pyragas control allows to stabilize unstable states in applied nonlinear science. We propose to apply a quantum version of the Pyragas protocol to control individual photon-probabilities in an otherwise only globally accessible photon-probability distribution of a quantum light emitter. The versatility of quantum Pyragas control is demonstrated for the case of a two-level emitter in a pulsed laser-driven half cavity. We show that one- and two-photon events respond in a qualitatively different way to the half-cavity induced feedback signal. One-photon events are either enhanced or suppressed, depending on the choice of parameters. In contrast, two-photon events undergo exclusively an enhancement up to $50\%$ for the chosen pulse areas. We hereby propose an implementation of quantum Pyragas control via a time-delayed feedback setup.
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