物理
量子退相干
量子纠缠
光子
零差检测
偶极子
量子光学
虚粒子
量子力学
量子
作者
Bhuvanesh Sundar,Diego Barberena,Asier Piñeiro Orioli,Anjun Chu,James K. Thompson,Ana María Rey,Robert J. Lewis-Swan
标识
DOI:10.1103/physrevlett.130.113202
摘要
We propose to simulate bosonic pair creation using large arrays of long-lived dipoles with multilevel internal structure coupled to an undriven optical cavity. Entanglement between the atoms, generated by the exchange of virtual photons through a common cavity mode, grows exponentially fast and is described by two-mode squeezing of effective bosonic quadratures. The mapping between an effective bosonic model and the natural spin description of the dipoles allows us to realize the analog of optical homodyne measurements via straightforward global rotations and population measurements of the electronic states, and we propose to exploit this for quantum-enhanced sensing of an optical phase (common and differential between two ensembles). We discuss a specific implementation based on Sr atoms and show that our sensing protocol is robust to sources of decoherence intrinsic to cavity platforms. Our proposal can open unique opportunities for next-generation optical atomic clocks.
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