论文标题
从经典到光相干的量子损失
From classical to quantum loss of light coherence
论文作者
论文摘要
光是探测重要的珍贵工具，因为它捕获了系统上的微观和宏观信息。我们在这里报告了从热（经典）到自发发射（量子）机制的过渡，该机制是从宏观原子云中丧失光相干性的过渡。通过在原子样品分散的光下实现的强度强度相关测量测量来探测一致性，并通过调整泵强度通过泵强度的热相干损耗和自发发射之间的平衡来探索过渡。我们的结果说明了冷原子设置研究宏观系统中经典到量子过渡的潜力。
Light is a precious tool to probe matter, as it captures microscopic and macroscopic information on the system. We here report on the transition from a thermal (classical) to a spontaneous emission (quantum) mechanism for the loss of light coherence from a macroscopic atomic cloud. The coherence is probed by intensity-intensity correlation measurements realized on the light scattered by the atomic sample, and the transition is explored by tuning the balance between thermal coherence loss and spontaneous emission via the pump strength. Our results illustrate the potential of cold atom setups to investigate the classical-to-quantum transition in macroscopic systems.
