AI 中文总结
研究在量子布朗运动通道中利用初始热噪声提升连续变量态辨别能力，通过结合压缩诱导相干性保持机制，降低态辨别错误概率，正交零差检测接近最优性能，为高温量子通信提供稳健架构。
AI 中文摘要
在耗散环境中保存量子资源是量子信息处理中的一项基本挑战。虽然环境相互作用通常会使量子资源退化，但我们从理论上表明，在量子布朗运动（QBM）通道中，通过增加而非最小化初始热噪声，可以改善连续变量态辨别。具体而言，在不抑制固有环境耗散的情况下，结合压缩时，这种初始噪声会诱导一种由探针与热库的瞬态非热化驱动的相干性保持机制。这种保持转化为正交压缩方向之间态辨别错误概率的显著降低。此外，我们还表明正交零差检测实现了接近最优的性能，接近赫尔斯托姆极限。这些结果突出了利用热压缩态的优势，为高温环境下的量子通信提供了一种稳健的物理架构。
英文摘要
Preserving quantum resources in dissipative environments is a fundamental challenge in quantum information processing. While environmental interactions usually degrade quantum resources, we theoretically show that in a Quantum Brownian Motion (QBM) channel, continuous-variable state discrimination can be improved by increasing, rather than minimizing, the initial thermal noise. Specifically, without suppressing the inherent environmental dissipation, when combined with squeezing, this initial noise induces a coherence preservation mechanism driven by the transient non-thermalization of the probe with the bath. This preservation translates into a pronounced reduction in error probabilities for state discrimination between orthogonal squeezing directions. Furthermore, we also show that quadrature homodyne detection achieves near-optimal performance, approaching the Helstrom limit. These results highlight the advantage of exploiting thermal-squeezed states, offering a robust physical architecture for quantum communication in high-temperature environments.
