论文标题
两个嘈杂的位移数状态的量子歧视
Quantum Discrimination of Two Noisy Displaced Number States
论文作者
论文摘要
最近，两个非连锁状态的量子歧视引起了很多关注。在这封信中，我们首先考虑了两个无嘈杂的流离失所数量状态的量子歧视。然后，我们得出嘈杂的位移数状态的FOCK表示，并解决了区分两个嘈杂的位移数状态的问题。我们进一步证明，肯尼迪接收器可以通过阈值检测来实现两个嘈杂的数字状态的最佳量子歧视。仿真结果验证了理论推导，并表明使用位移数字状态的On-Off键控调制的误差概率显着少于使用具有相同平均能量的连贯状态使用的连贯状态。
The quantum discrimination of two non-coherent states draws much attention recently. In this letter, we first consider the quantum discrimination of two noiseless displaced number states. Then we derive the Fock representation of noisy displaced number states and address the problem of discriminating between two noisy displaced number states. We further prove that the optimal quantum discrimination of two noisy displaced number states can be achieved by the Kennedy receiver with threshold detection. Simulation results verify the theoretical derivations and show that the error probability of on-off keying modulation using a displaced number state is significantly less than that of on-off keying modulation using a coherent state with the same average energy.
