论文标题
对有限数量相干状态的顺序分析
Sequential Analysis of a finite number of Coherent states
论文作者
论文摘要
我们调查了订购一组状态的信息处理优于使用固定数量的连贯状态副本进行全局量子处理的优势。假设爱丽丝有两个量子状态之一$σ_0$或$σ_1$的$ n $副本，她将这些状态送给了鲍勃。使用最佳顺序测试，SPRT，我们询问以$ l $批量处理状态是否有利于最佳区分这两个假设。我们发现，对于对称情况，$ \ {|γ\ rangle，|-γ\ rangle \} $毫无优势。我们在调查情况下给出了最佳批处理尺寸$ l_ \ text {opt} $的表达式。我们给出$ l_ \ text {min} $和$ l_ \ text {max} $，用于$ p_s \大约1 $。
We investigate an advantage for information processing of ordering a set of states over making a global quantum processing with a fixed number of copies of coherent states. Suppose Alice has $N$ copies of one of two quantum states $σ_0$ or $σ_1$ and she gives these states to Bob. Using the optimal sequential test, the SPRT, we ask if processing the states in batches of size $l$ is advantageous to optimally distinguish the two hypotheses. We find that for the symmetric case $\{|γ\rangle,|-γ\rangle\}$ there is no advantage of taking any batch size $l$. We give an expression for the optimal batch size $l_\text{opt}$ in the assymetric case. We give bounds $l_\text{min}$ and $l_\text{max}$ for when $P_S\approx 1$.
