论文标题
部分可观测时空混沌系统的无模型预测
Performance of Coherent Frequency-Shift Keying for Classical Communication \\ on Quantum Channels
论文作者
论文摘要
我们评估相干换移键合（CFSK）字母的性能，以在量子通道上进行通信。我们表明，与以前认为的方形 - 根测量（SRM）相反，对于区分CFSK状态而言是优化的。此外，我们计算了CFSK字母的最大信息传输速率，观察到它采用至少与信号状态一样多的频率模式，并将其与标准相移键进行比较。最后，我们引入了具有更高模式效率的离散的CFSK字母，在CFSK方面表现出可比的错误性能性能和更好的速率性能。我们的结果表明，CFSK降低错误概率及其模式效率之间存在权衡。
We evaluate the performance of coherent frequency-shift keying (CFSK) alphabets for communication on quantum channels. We show that, contrarily to what previously thought, the square-root-measurement (SRM) is sub-optimal for discriminating CFSK states. Furthermore, we compute the maximum information transmission rate of the CFSK alphabet, observing that it employs at least as many frequency modes as the signal states, and compare it with standard phase-shift-keying. Finally, we introduce a discretized CFSK alphabet with higher mode-efficiency, exhibiting comparable error-probability performance with respect to CFSK and better rate performance. Our results suggest the existence of a tradeoff between the CFSK reduced error-probability and its mode efficiency.
