Observation of quantum collapse and revival in a one-atom maser

Rempe, Gerhard; Walther, H.; Klein, N.

doi:10.1103/physrevlett.58.353

Cited by 1,401 publications

(720 citation statements)

References 17 publications

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“…The so-called vacuum Rabi energyhΩ R,k is the Rabi energy obtained with the electric field corresponding to one photon 5,30 . For the system under consideration 8,9 , the polariton coupling frequency for the TM-polarized mode 31 reads…”

Section: Scaling Of the Interactionmentioning

confidence: 99%

“…The strong coupling regime has been first observed in the late '80s using atoms in metallic cavities 5,6 , and a few years later in solid-state systems using excitonic transitions in quantum wells embedded in semiconductor microcavities 7 . In this regime, the normal modes of the system consist of linear superpositions of electronic and photonic excitations, which, in the case of semiconductor materials, are the so-called polaritons.…”

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confidence: 99%

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Quantum vacuum properties of the intersubband cavity polariton field

Ciuti

Bastard²,

Carusotto³

2005

Phys. Rev. B

628

875

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We present a quantum description of a planar microcavity photon mode strongly coupled to a semiconductor intersubband transition in presence of a two-dimensional electron gas. We show that, in this kind of system, the vacuum Rabi frequency ΩR can be a significant fraction of the intersubband transition frequency ω12. This regime of ultra-strong light-matter coupling is enhanced for long wavelength transitions, because for a given doping density, effective mass and number of quantum wells, the ratio ΩR/ω12 increases as the square root of the intersubband emission wavelength. We characterize the quantum properties of the ground state (a two-mode squeezed vacuum), which can be tuned in-situ by changing the value of ΩR, e.g., through an electrostatic gate. We finally point out how the tunability of the polariton quantum vacuum can be exploited to generate correlated photon pairs out of the vacuum via quantum electrodynamics phenomena reminiscent of the dynamical Casimir effect.In the last decade, the study of intersubband electronic transitions 1 in semiconductor quantum wells has enjoyed a considerable success, leading to remarkable opto-electronic devices such as the quantum cascade lasers 2,3,4 . In contrast to the more conventional interband transitions between conduction and valence bands, the frequency of intersubband transitions is not determined by the energy gap of the semiconductor material system used, but rather can be chosen via the thickness of the quantum wells in the active region, providing tunable sources emitting in the mid and far infrared.One of the most fascinating aspects of light-matter interaction is the so-called strong light-matter coupling regime, which is achieved when a cavity mode is resonant with an electronic transition of frequency ω 12 , and the so-called vacuum Rabi frequency Ω R exceeds the cavity mode and electronic transition linewidths. The strong coupling regime has been first observed in the late '80s using atoms in metallic cavities 5,6 , and a few years later in solid-state systems using excitonic transitions in quantum wells embedded in semiconductor microcavities 7 . In this regime, the normal modes of the system consist of linear superpositions of electronic and photonic excitations, which, in the case of semiconductor materials, are the so-called polaritons. In both these systems, the vacuum Rabi frequency Ω R does not exceed a very small fraction of the transition frequency ω 12 .Recently, Dini et al. 8 have reported the first demonstration of strong coupling regime between a cavity photon mode and a mid-infrared intersubband transition, in agreement with earlier semiclassical theoretical predictions by Liu 9 . The dielectric Fabry-Perot structure realized by Dini et al. 8 consists of a modulation doped multiple quantum well structure embedded in a microcavity, whose mirrors work thanks to the principle of total internal reflection. The strong coupling regime has been also observed in quantum well infra-red detectors 10 . As we will show in detail, an important advant...

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Section: Scaling Of the Interactionmentioning

confidence: 99%

mentioning

confidence: 99%

Quantum vacuum properties of the intersubband cavity polariton field

Ciuti

Bastard²,

Carusotto³

2005

Phys. Rev. B

628

875

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“…The RCP has a nonclassical origin and reflects the nature of the statistics of the radiation field. The evolution of the atomic inversion has been realized via, e.g., the one-atom mazer [12] and using technique similar to that of the NMR refocusing [13]. In this section we investigate the behavior of the AQC by studying the evolution of the atomic inversions and the second-order correlation functions.…”

Section: Atomic Inversions and Second-order Correlation Functionmentioning

confidence: 99%

“…Furthermore, the JCM has been experimentally implemented by various means, e.g. one-atom mazer [12], the NMR refocusing [13], a Rydberg atom in a superconducting cavity [14], the trapped ion [15] and the micromaser [16].…”

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confidence: 99%

A linear atomic quantum coupler

El-Orany¹,

B²

2010

J. Phys. B: At. Mol. Opt. Phys.

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In this paper, we develop the notion of the linear atomic quantum coupler. This device consists of two modes propagating into two waveguides, each of them includes a localized and/or a trapped atom. These waveguides are placed close enough to allow exchanging energy between them via evanescent waves. Each mode interacts with the atom in the same waveguide in the standard way, i.e. as the Jaynes-Cummings model (JCM), and with the atom-mode in the second waveguide via evanescent wave. We present the Hamiltonian for the system and deduce the exact form for the wavefunction. We investigate the atomic inversions and the second-order correlation function. In contrast to the conventional linear coupler, the atomic quantum coupler is able to generate nonclassical effects. The atomic inversions can exhibit long revival-collapse phenomenon as well as subsidiary revivals based on the competition among the switching mechanisms in the system. Finally, under certain conditions, the system can yield the results of the two-mode JCM.

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“…Although the mathematical techniques have a broader scope, we focus on the physically relevant model of the atom maser, which has been extensively investigated both theoretically [7,8] and experimentally [9,10] and found to exhibit a number of interesting dynamical phenomena. In the standard set-up of the atom maser, a beam of two-level atoms prepared in the excited state passes through a cavity with which they are in resonance, interact with the cavity field and are detected after exiting the cavity.…”

Section: Introductionmentioning

confidence: 99%

Asymptotic inference in system identification for the atom maser

Catana

Horssen

Guţǎ

2012

Phil. Trans. R. Soc. A.

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System identification is closely related to control theory and plays an increasing role in quantum engineering. In the quantum set-up, system identification is usually equated to process tomography, i.e. estimating a channel by probing it repeatedly with different input states. However, for quantum dynamical systems such as quantum Markov processes, it is more natural to consider the estimation based on continuous measurements of the output, with a given input that may be stationary. We address this problem using asymptotic statistics tools, for the specific example of estimating the Rabi frequency of an atom maser. We compute the Fisher information of different measurement processes as well as the quantum Fisher information of the atom maser, and establish the local asymptotic normality of these statistical models. The statistical notions can be expressed in terms of spectral properties of certain deformed Markov generators, and the connection to large deviations is briefly discussed.

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Observation of quantum collapse and revival in a one-atom maser

Cited by 1,401 publications

References 17 publications

Quantum vacuum properties of the intersubband cavity polariton field

Quantum vacuum properties of the intersubband cavity polariton field

A linear atomic quantum coupler

Asymptotic inference in system identification for the atom maser

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