Efficient two-dimensional atom localization in a four-level atomic system beyond weak-probe approximation

Wang, Zhiping; Shui, Tao; Yu, Benli

doi:10.1016/j.optcom.2013.10.009

Cited by 54 publications

(26 citation statements)

References 29 publications

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“…It is known that the quantum coherence and interference can lead to the lasing without inversion (LWI) in atomic systems [1][2][3][4]. At present, the effect of quantum coherence and interference on electromagnetically induced transparency (EIT) [5], optical bistability (OB) [6,7], four-wave mixing (FWM) [8][9][10], and other interesting phenomena [11][12][13][14][15][16][17] have been discussed. In a real experiment for the LWI an atomic gas can be used as an active medium.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Lasing without Inversion in a Multiple Quantum Well System

Chen

2021

Int J Theor Phys

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In this study, the influence of exciton spins relaxation (ESR) on spatial evolution of amplification without population inversion in a four-level GsAs multiple quantum wells is discussed theoretically. The role of propagation distance on absorption, dispersion and group index of weak probe light in the presence and absence of ESR is then analyzed. It is found that exciton spin relaxation (spin decoherence) which resulted from many-particle interaction in semiconductors have essential roles to adjusting the absorption and dispersion properties of weak probe light. Moreover, it is realized that the propagation distance in the presence of ESR can lead to switching between subluminal and superluminal light propagation. Our study provides a suitable treatment for the next generation of all-optical systems in semiconductor nanostructures.

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Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Lasing without Inversion in a Multiple Quantum Well System

Chen

2021

Int J Theor Phys

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“…In this situation, a weak probe beam of light travels slowly in a resonant medium controlled by another laser beam without any significant absorption [1][2][3][4][5][6][7][8]. Because of changing absorption and dispersion characteristics of an atomic medium [9][10][11][12][13][14][15][16], EIT can result in several interesting phenomena in nonlinear optics, such as multiwave mixing [17][18][19][20], an enhanced Kerr nonlinearity [21][22][23][24][25][26][27][28], stable optical solitons [29][30][31][32][33][34], and optical bistability [35][36][37][38][39][40][41][42][43]. The optical bistability (OB) has been investigated both theoretically and experimentally in various multilevel EIT schemes due to its applications in all-optical transistors, switches, logical gates, and quantum memory [44].…”

Section: Introductionmentioning

confidence: 99%

Optical bistability forming due to a Rydberg state

et al. 2017

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We consider the behavior of optical bistability (OB) and multistability (OM) in a four-level atomic system involving a Rydberg state illuminated by a probe field as well as control and switching laser beams of larger intensity. When the switching field is absent, no OB arises because of the effect of Rydberg electromagnetically induced transparency. However, by application of the switching field, the hysteresis cycle appears to give rise to optical bistability, thanks to Rydberg electromagnetically induced absorption. It is further demonstrated that one can efficiently modify the OB threshold via suitable choices of system-controlling parameters. Interestingly, it is observed that this model can produce an optical switching between OB and OM with potential applications in logic-gate devices for optical communication.

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“…Quantum optical phenomena based on quantum interference and atomic coherence have been studied in recent years, for example, electromagnetically induced transparency (EIT) [1], lasing without inversion (LWI) [2], four-wave mixing [3][4][5], electron localization [6][7][8][9], optical solitons [10,11], optical bistability [12][13][14][15][16][17][18][19][20][21][22], and so on [23][24][25][26][27]. Optical bistability (OB) has been extensively developed due to its potential application in many optical switches and optical transistors, which are very useful devices in quantum computing and quantum communications [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Optical bistability in a three-level lambda molecule with permanent dipole moments

Asadpour

Soleimani

2014

J. Opt. Soc. Am. B

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Optical bistability (OB) in a unidirectional ring cavity with a three-level Λ-type molecular system with nonzero permanent dipole moments is discussed. We found that in the 2 2-transition processes, the permanent dipole moments induced new quantum coherence effects which lead to controlling the OB behavior of the system. Moreover, we showed that the group velocity can be switched from slow to fast or vice versa under specific conditions of difference in permanent dipole moments of the probe transition.

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Efficient two-dimensional atom localization in a four-level atomic system beyond weak-probe approximation

Cited by 54 publications

References 29 publications

Theoretical Investigation of Lasing without Inversion in a Multiple Quantum Well System

Theoretical Investigation of Lasing without Inversion in a Multiple Quantum Well System

Optical bistability forming due to a Rydberg state

Optical bistability in a three-level lambda molecule with permanent dipole moments

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