随机共振的量子禁止区间定理
Quantum Forbidden-Interval Theorems for Stochastic Resonance
摘要：
将经典的非线性系统中随机共振噪声增益的禁止区间定理推广到量子光通信模型和连续变量量子密钥分发模型。每一个量子禁止区间定理都给出了经典信息的量子通信中是否发生随机共振的一个充分必要条件。量子定理适用于任何具有有限方差或来自无穷方差α稳定概率密度族的量子噪声源。仿真结果表明，基本量子通信模型和连续变量量子密钥分发模型的噪声效益。
英文摘要：
We extend the classical forbidden-interval theorems for a stochastic-resonance noise benefit in a nonlinear system to a quantum-optical communication model and a continuous-variable quantum key distribution model. Each quantum forbidden-interval theorem gives a necessary and sufficient condition that determines whether stochastic resonance occurs in quantum communication of classical messages. The quantum theorems apply to any quantum noise source that has finite variance or that comes from the family of infinite-variance alpha-stable probability densities. Simulations show the noise benefits for the basic quantum communication model and the continuous-variable quantum key distribution model.
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