Vacuum Rabi oscillation induced by virtual photons in the ultrastrong coupling regime

Abstract

We present an interaction scheme that exhibits a dynamical consequence of virtual photons carried by a vacuum-field dressed two-level atom in the ultrastrong coupling regime. We show that, with the aid of an external driving field, virtual photons provide a transition matrix element that enables the atom to evolve coherently and reversibly to an auxiliary level accompanied by the emission of a real photon. The process corresponds to a type of vacuum Rabi oscillation, and we show that the effective vacuum Rabi frequency is proportional to the amplitude of a single virtual photon in the ground state. Therefore the interaction scheme could serve as a probe of ground state structures in the ultrastrong coupling regime.

arXiv comment4 pages, 3 figures

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Cited by in corpus (15)

• Characteristic spectra of circuit quantum electrodynamics systems from the ultrastrong- to the deep-strong-coupling regime
• Perfect photon absorption in nonlinear regime of cavity quantum electrodynamics
• Generalized rotating-wave approximation to the two-qubit and cavity coupling system
• Ultrastrong Jaynes-Cummings Model
• Non-Hermitian Hamiltonian for a Modulated Jaynes-Cummings Model with PT Symmetry
• Manipulating counter-rotating interactions in the quantum Rabi model via qubit frequency modulation
• Simulating Anisotropic quantum Rabi model via frequency modulation
• Photodetection probability in quantum systems with arbitrarily strong light-matter interaction
• Quantum radiation from a shaken two-level atom in vacuum
• Ground state of a resonant two-qubit Rabi model in the ultrastrong coupling regime
• Polariton spectrum of the Dicke-Ising model
• Tunable nonlinear coherent perfect absorption and reflection in cavity QED
• Multi-qubit Quantum Rabi Model and Multi-partite Entangled States in a Circuit QED System
• Elliptical rotation of cavity amplitude in ultrastrong waveguide QED
• Quantum dynamics of ultra-cold atoms in the presence of virtual photons