Collective spontaneous emission of two entangled atoms near an oscillating mirror

Reina, Marta; Domina, Michelangelo; Ferreri, Alessandro; Fiscelli, Giuseppe; Noto, Antonio; Passante, Roberto; Rizzuto, Lucia

doi:10.1103/physreva.103.033710

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…The effects of uniform acceleration of neutral atoms in vacuum and their relation with the Unruh effects have been also studied [27,28]. Dynamical environments can also modify radiative properties of atoms or molecules nearby, under adiabatic conditions [29,30,31,32].…”

Section: Introductionmentioning

confidence: 99%

Dynamical atom-wall Casimir-Polder effect after a sudden change of the atomic position

Noto

Passante

Rizzuto

et al. 2023

J. Phys.: Conf. Ser.

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We investigate the dynamical Casimir-Polder force between an atom and a conducting wall during the time evolution of the system from a partially dressed state. This state is obtained by a sudden change of the atomic position with respect to the plate. To evaluate the time-dependent atom-plate Casimir-Polder force we solve the Heisenberg equations for the field and atomic operators by an iterative technique. We find that the dynamical atom-plate Casimir-Polder interaction exhibits oscillation in time, and can be attractive or repulsive depending on time and the atom-wall distance. We also investigate the time dependence of global observables, such as the field and atomic Hamiltonians, and discuss some interesting features of the dynamical process bringing the interaction energy to the equilibrium configuration.

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Section: Introductionmentioning

confidence: 99%

Dynamical atom-wall Casimir-Polder effect after a sudden change of the atomic position

Noto

Passante

Rizzuto

et al. 2023

J. Phys.: Conf. Ser.

Self Cite

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“…As a superposition state Dicke state was defined by Dicke in his pioneering paper [6], which describes how a larger number of dipole emitters display correlated behavior via coupling to a common light field. Dicke state has attracted extensive attentions in fundamental research and quantum information for its excellent coherence and entanglement properties, such as collective spontaneous radiation [7][8][9], quantum storage [10,11], quantum communication [12][13][14], and etc. Recently, a renewed Dicke state, i.e., timed Dicke state [15,16] which contains position-dependent excitation phases has been widely investigated in free space.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the spectrum of timed Dicke state via squeezing a cavity mode

et al. 2023

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In this work we present transmission spectra of a two atom timed Dicke state in an optical cavity which is subject to the parametric driving. In the proposed scheme, the parametric driving can squeeze the cavity mode and exponentially enhance the atom-cavity interaction. We show that the interaction between the timed Dicke state and squeezed cavity mode induces the quantum interference and normal mode splitting on the transmission spectra. In addition, we demonstrated that the spectra intensities are exponential quadratic enhanced under the parametric driving, which may provide a feasible scheme for sensitivity enhancement of the single photon measurement.

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Effects of a thermal bath and the accelerated motion on collective transitions of two atoms in an entangled state

Zhou,

Zhou

2024

Eur. Phys. J. C

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Transition rates of a uniformly accelerated atom coupled to a vacuum scalar field are identical with those of one being static in a thermal bath at a temperature proportional to the proper acceleration a, i.e., $$T_U=\frac{a}{2\pi }$$ T U = a 2 π . We discuss in this paper whether there exists such an equivalence in the electromagnetic field case if more atoms are involved. To be specific, we explore the similarities and distinctions between effects of a thermal bath and those of the uniformly accelerated motion by comparing the transition rates of a two-atom system initially in the symmetric or antisymmetric entangled state [$$|\psi _{\pm }\rangle $$ | ψ ± ⟩ ] in two cases, i.e., two static atoms in a thermal bath [the thermal case] and two atoms uniformly accelerated in vacuum [the acceleration case]. We discover that, for some particular orientations of atomic dipole moments, coherent radiation which happens in the acceleration case never occurs in the thermal case. The rates in the acceleration case with a low acceleration which means a low $$T_U$$ T U can be smaller or larger and even equal to their counterparts in the thermal case; while the rates in the acceleration case with a high acceleration which means a high $$T_U$$ T U are always much larger than their counterparts in the thermal case. Our results suggest that effects of a thermal bath and those of the uniformly accelerated motion on transition properties of a two-atom system in $$|\psi _{\pm }\rangle $$ | ψ ± ⟩ are not necessarily distinctive, but can be equivalent if the acceleration is relatively low, depending on the value of the interatomic separation.

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Collective spontaneous emission of two entangled atoms near an oscillating mirror

Cited by 3 publications

References 44 publications

Dynamical atom-wall Casimir-Polder effect after a sudden change of the atomic position

Dynamical atom-wall Casimir-Polder effect after a sudden change of the atomic position

Enhancing the spectrum of timed Dicke state via squeezing a cavity mode

Effects of a thermal bath and the accelerated motion on collective transitions of two atoms in an entangled state

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