Optomechanical Rydberg-Atom Excitation via Dynamic Casimir-Polder Coupling

Salvatore Spagnolo, Roberto Passante, Lucia Rizzuto, Antonio Noto, Giovanni Carugno, Antonio Noto, Mauro Antezza, Giuseppe Ruoso, Caterina Braggio

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23 Citazioni (Scopus)

Abstract

We study the optomechanical coupling of a oscillating effective mirror with a Rydberg atomic gas, mediated by the dynamical atom-mirror Casimir-Polder force. This coupling may produce a near-field resonant atomic excitation whose probability scales as $\propto (d^2 a n^4 t)^2/z_0^8$, where $z_0$ is the average atom-surface distance, $d$ the atomic dipole moment, $a$ the mirror’s effective oscillation amplitude, $n$ the initial principal quantum number, and $t$ the time. We propose an experimental configuration to realize this system with a cold atom gas trapped at a distance \sim 2 × 10 μm from a semiconductor substrate whose dielectric constant is periodically driven by an external laser pulse, hence realizing an effective mechanical mirror motion due to the periodic change of the substrate from transparent to reflecting. For a parabolic gas shape, this effect is predicted to excite about $\sim 10^2$ atoms of a dilute gas of $10^3$ trapped Rydberg atoms with $n=75$ after about 0.5 μs, which is high enough to be detected in typical Rydberg gas experimental conditions.
Lingua originaleEnglish
pagine (da-a)023601-1-023601-5
Numero di pagine5
RivistaPhysical Review Letters
Volume113
Stato di pubblicazionePublished - 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Spagnolo, S., Passante, R., Rizzuto, L., Noto, A., Carugno, G., Noto, A., Antezza, M., Ruoso, G., & Braggio, C. (2014). Optomechanical Rydberg-Atom Excitation via Dynamic Casimir-Polder Coupling. Physical Review Letters, 113, 023601-1-023601-5.