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arXiv 2008.06533physics.opticsquant-ph
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巨原子衰变的光子学模拟

Photonic simulation of giant atom decay

Stefano Longhi

摘要:

激发原子在电磁模式的无特征连续体中的自发发射是量子电动力学中的基本过程,其与量子发射体到其基态的指数衰减相关,并伴随着光子的不可逆发射。然而,当考虑到$^{\prime}$巨$^{\prime}$原子,即尺寸大于发射光子波长的原子时,这种简单的情况被深刻地修改。在这样一个非常规的制度,非马尔可夫效应和强烈的偏离指数衰减观察到由于非本地光原子耦合所产生的干扰效应。在这里,我们提出了一个光子模拟的非马尔可夫巨原子衰变,光逃逸动力学的基础上,在光波导非本地耦合到波导晶格。该系统可以模拟非指数衰减、衰减的增强或减慢以及原子场暗态的形成等主要效应

英文摘要:

Spontaneous emission of an excited atom in a featureless continuum of electromagnetic modes is a fundamental process in quantum electrodynamics associated with an exponential decay of the quantum emitter to its ground state accompanied by an irreversible emission of a photon. However, such a simple scenario is deeply modified when considering a $^{\prime}$giant$^{\prime}$ atom, i.e an atom whose dimension is larger than the wavelength of the emitted photon. In such an unconventional regime, non-Markovian effects and strong deviations from an exponential decay are observed owing to interference effects arising from non-local light-atom coupling. Here we suggest a photonic simulation of non-Markovian giant atom decay, based on light escape dynamics in an optical waveguide non-locally-coupled to a waveguide lattice. Major effects such as non-exponential decay, enhancement or slowing down of the decay, and formation of atom-field dark states can be emulated in this system

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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