Spontaneous and Induced Atomic Decay in Photonic Band Structures

Kofman, A. G.; Kurizki, Gershon; Sherman, B.

doi:10.1080/09500349414550381

Cited by 322 publications

(343 citation statements)

References 47 publications

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“…Here the Q value is defined by the difference between the energy of the initially prepared state (denoted by E 0 ) and the minimum energy of the continuous eigenstates (denoted by E th ) in the system. The small-Q-value decay has been discussed in some papers [9,10]. The point we would like to emphasize here is as follows: in the case of the SQS decay, we can observe not only the enhancement of the QZE, but also no exponential period.…”

Section: Introductionmentioning

confidence: 87%

“…As mentioned above, the deviation from the exponential law at late and early times is often discussed [8,9]. At very late times, the survival probability P (t) must decrease more slowly than the exponential and exhibits the inverse power law of time P (t) ∼ t −α , where α is positive and depends on the property of the unstable system.…”

Section: Introductionmentioning

confidence: 99%

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Nonexponential decay of an unstable quantum system: Small-Q-values-wave decay

et al. 2005

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We study the decay process of an unstable quantum system, especially the deviation from the exponential decay law. We show that the exponential period no longer exists in the case of the s-wave decay with small Q value, where the Q value is the difference between the energy of the initially prepared state and the minimum energy of the continuous eigenstates in the system. We also derive the quantitative condition that this kind of decay process takes place and discuss what kind of system is suitable to observe the decay.

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Section: Introductionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Nonexponential decay of an unstable quantum system: Small-Q-values-wave decay

et al. 2005

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“…Such a process might be completely different from the one occurring in vacuum or in dielectric media (away from the exciton resonances). In fact, even in the single-center case, the rapidly varying density of radiative modes leads to nonexponential spontaneous atomic decay [92,93, in cavities or photonic crystals. For instance, for atomic frequencies close to the bandedge, the splitting of the atomic level (vacuum Rabi splitting) [71,104] leads to oscillatory spontaneous decay [92].…”

Section: B Photonic Bandgap Structuresmentioning

confidence: 99%

Quantum Electrodynamics of Resonance Energy Transfer

Juzeliūnas¹,

Andrews²

2000

Advances in Chemical Physics

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“…(12) and (13) ) and the more elaborate exact solution of this S+B model [26] predict that W ext N SM (Eqs. (16)) and W ext sel (Eqs.…”

Section: Experimental Scenariomentioning

confidence: 99%

Work extraction via quantum nondemolition measurements of qubits in cavities: Non-Markovian effects

et al. 2013

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We show that frequent nondemolition measurements of a quantum system immersed in a thermal bath allow the extraction of work in a closed cycle from the system-bath interaction (correlation) energy, a hitherto unexploited work resource. It allows for work even if no information is gathered or the bath is at zero temperature, provided the cycle is within the bath memory time. The predicted work resource may be the basis of quantum engines embedded in a bath with long memory time, such as the electromagnetic bath of a high-Q cavity coupled to two-level systems. I. IntroductionInformation acquired by an observer on the system can be commuted into work in a single-bath engine [1][2][3][4][5][6][7][8][9]. To this end, the observer ("Maxwell's demon") must manipulate the system according to the results of measurements performed on it. The measurements have therefore to be selective, i.e., their outcomes must be read and discriminated to determine the observer's course of action [7,10]. The balance of work and information is embodied by the Szilard-Landauer (SL) principle [1, 2] whereby work obtainable from a measurement must not exceed the energy cost of erasing its record from the observer's memory. Notwithstanding ongoing efforts to expand information-based thermodynamics (IT) so as to include measurement-cost effects [10][11][12] beyond the original SL balance (see Appendix), an important aspect has been little addressed thus far [13]: How essential is the thermodynamic paradigm of system-bath separability [14,15] to the analysis of work extraction by measurements?This question is here investigated in the context of non-Markovian quantum thermodynamics "under observation" [16][17][18][19][20][21]. Namely, we show that frequent measurements can induce changes in system-bath correlations, unaccounted for by the separability paradigm, and thereby change the tradeoff of information and work. Consequently, selective (read) measurements can extract more work in a closed cycle than what the SL principle allows. This effect requires the cycle to be completed within a non-Markovian (bath-memory) time-scale.We further show that non-selective quantum nondemolition (QND) measurements of the system energy (which we shall also denote as unread measurements, i.e., measurements whose outcomes do not matter) enable the system to do work in a cycle, although they provide no information on the system, nor do they change its state (by their definition as QND measurements) and thus do not act as a "demon." Work is shown to be obtainable within the bath memory time even at zero temperature (T = 0),

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Spontaneous and Induced Atomic Decay in Photonic Band Structures

Cited by 322 publications

References 47 publications

Nonexponential decay of an unstable quantum system: Small-Q-values-wave decay

Nonexponential decay of an unstable quantum system: Small-Q-values-wave decay

Quantum Electrodynamics of Resonance Energy Transfer

Work extraction via quantum nondemolition measurements of qubits in cavities: Non-Markovian effects

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