论文标题
统一效率量子转导的广义匹配条件
Generalized Matching Condition for Unity Efficiency Quantum Transduction
论文作者
论文摘要
通过量子传感器在不同元素之间连贯地转换量子状态仍然是量子科学中的至关重要但具有挑战性的任务。尤其是需求是光频率之间的量子转导，这是长距离低损失传输的理想选择，而微波频率则是吸收高保真量子操作的微波频率。我们提出了$ n $ stage量子转导的通用形式主义，涵盖了各种领先的微波到光学，微波至微波和光学到光学线性转换方法。然后，我们确定有效的电路模型以及实现最大转化效率的总体匹配条件。普遍的匹配条件需要电阻匹配以及频率匹配，超出了通常的共振假设，并具有简单的阻抗匹配的传输解释。我们的形式主义提供了一个通用的工具箱，用于确定实验参数以实现有效的量子转导，并提出了非谐振转化率的新制度，这些转化率可能胜过全共振。
Coherently converting quantum states between distinct elements via quantum transducers remains a crucial yet challenging task in quantum science. Especially in demand is quantum transduction between optical frequencies, which are ideal for low-loss transmission across long distances, and microwave frequencies, which admit high-fidelity quantum operations. We present a generic formalism for $N$-stage quantum transduction that covers various leading microwave-to-optical, microwave-to-microwave, and optical-to-optical linear conversion approaches. We then identify effective circuit models and the resulting generalized matching conditions for achieving maximum conversion efficiency. The generalized matching condition requires resistance matching as well as frequency matching beyond the usual resonant assumption, with simple impedance-matched transmission interpretation. Our formalism provides a generic toolbox for determining experimental parameters to realize efficient quantum transduction, and suggests new regimes of non-resonant conversions that might outperform all-resonant ones.
