State reduction and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>|</mml:mo><mml:mi>n</mml:mi><mml:mi>〉</mml:mi></mml:math>-state preparation in a high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Q</mml:mi></mml:math>micromaser

Krause, Joachim; Scully, Marlan O.; Walther, H.

doi:10.1103/physreva.36.4547

Cited by 190 publications

(59 citation statements)

References 11 publications

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“…A special case of this equation has been studied before, see [4] and [6]. It is of essential importance to point out, that in generalP m (n) = P m,k (n), for an arbitrary k. The distribution given in (10) is the ensemble average over all possible outcomes P m,k (n)…”

Section: Adiabatic Jaynes-cummings Modelmentioning

confidence: 99%

Cavity field ensembles from non-selective measurements

Larson¹,

Stenholm²

2004

Journal of Modern Optics

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We continue our investigations of cavity QED with time dependent parameters. In this paper we discuss the situation where the state of the atoms leaving the cavity is reduced but the outcome is not recorded. In this case our knowledge is limited to an ensemble description of the results only. By applying the Demkov-Kunike level-crossing model, we show that even in this case, the filtering action of the interaction allows us to prepare a preassigned Fock state with good accuracy. The possibilities and limitations of the method are discussed and some relations to earlier work are presented.

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Section: Adiabatic Jaynes-cummings Modelmentioning

confidence: 99%

Cavity field ensembles from non-selective measurements

Larson¹,

Stenholm²

2004

Journal of Modern Optics

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“…(2)(3)(4)(5)(6) In this region of the parameters the quantized nature of the field does not play a significant role and, therefore, we call it the "semiclassical" regime of the micromaser. Since there cannot be peaks for ko > N cx [8], this condition tells us in short that 9 cannot be larger than N ex in this regime.…”

Section: The Semiclassical Regimementioning

confidence: 99%

“…Due to the relatively straightforward theory [3,4] and experimental accessibility, it has proved to be particularly well suited to study quantum effects in the interaction between radiation and matter. Genuine quantum features have been predicted and observed, such as, e. g, the JaynesCummings collapse-revival [5], nonclassical photon statistics including number states [6], trapping states [7], quantum island states [8], and macroscopical superpositions [9]. It has also been suggested to build macroscopic correlated systems by coupling two micromasers together to study nonlocal quantum cor-relations between separate fields [10], or to couple them to other quantum devices in, for example, atomic interferometers to test the principle of complementarity [11],…”

Section: Introductionmentioning

confidence: 99%

Phase Structures in the Micromaser Photon Statistics

Bergou

Bogár

1999

Zeitschrift Für Naturforschung A

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In the photon number distribution p(9,k) of the micromaser, distinct structures are formed by the ridges connecting the peaks in the 9 -k space. We refer to these structures as phases. By a simple condition we can distinguish between "semiclassical" and "quantum" regimes of operation near and far above threshold, respectively. In the semiclassical regime, the equations of state of the phases 9 = 9{k) are monotonous and coincide with the steady state solutions of the semiclassical theory. They reflect typical features of the micromaser dynamics. The transition jumps, e. g., between the phases decrease with increasing pumping parameter 9, signifying the onset of the Jaynes-Cummings collapse. On increasing 9 further, the phases first disintegrate and then restructure into new kinds of phases in the quantum regime. The equations of state are no longer monotonous. Large single peaks, the quantum island states (QIS), develop in the neighborhoods of minima. The system undergoes oscillations between two kinds of quantum island states, QIS -and QIS + , as a function of 9. The disintegration and transformation of phases recur periodically as 9 is varied, and the phases in the semiclassical region are followed by consecutive phase structures in the quantum regime. The subsequent collapses and revivals of phases are directly connected to the Jaynes-Cummings collapse and revival. The observation of these phase structures and the accompanying QIS is experimentally feasible.PACS 42.50. Dv, 42.52+x

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“…If the initial state is the vacuum, |0 , then a number state is created in the cavity that is equal to the number of ground state atoms that were collected within a suitably small fraction of the cavity decay time. This is the essence of the method of preparing Fock states by state reduction that was proposed by Krause et al [53]. In a system like the micromaser there is no dissipative loss during the interaction and an atom in the cavity undergoes Rabi oscillations.…”

Section: Dynamical Preparation Of N-photon States In a Cavitymentioning

confidence: 99%

The Deterministic Generation of Photons by Cavity Quantum Electrodynamics

Walther

2007

Elements of Quantum Information

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Cavity quantum electrodynamics allows the study of strong coupling between excited atoms and a single mode of a resonant cavity. As a consequence of the strong coupling the cavity field and the atom are entangled. The system thus provides important ingredients necessary for studies of quantum information processing. In addition the periodic exchange of a photon between atom and cavity can be studied. It thus represents the ideal system to investigate the Jaynes-Cummings model and to study a variety of phenomena related to the dynamics of the photon exchange such as collapse and revivals depending on the statistics of the photon field. Furthermore, it is an ideal system to study the quantum measurement process. The system leads to masers and lasers which sustain oscillations with less than one atom on average in the cavity and can, in addition, be used as a deterministic photon source. The setup allows to study in detail the conditions necessary to obtain nonclassical radiation, i.e. radiation with sub-Poissonian photon statistics and even photon number states; this is the case even when Poissonian pumping is used. This paper reviews the work on cavity quantum electrodynamics performed with the one-atom maser and with a single ion trap laser. We will start with the discussion of the one-atom maser. For a more detailed discussion of those experiments see also [1].

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State reduction and|n〉-state preparation in a high-Qmicromaser

Cited by 190 publications

References 11 publications

Cavity field ensembles from non-selective measurements

Cavity field ensembles from non-selective measurements

Phase Structures in the Micromaser Photon Statistics

The Deterministic Generation of Photons by Cavity Quantum Electrodynamics

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