One- and two-dimensional Raman-induced diffraction gratings in atomic media

Arkhipkin, V. G.; Myslivets, S. A.

doi:10.1103/physreva.98.013838

Cited by 27 publications

(13 citation statements)

References 35 publications

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“…This makes the medium acting as a Bragg or diffraction grating that causes the diffraction of probe light to high-order directions 34 . Several setups have been proposed for efficient control of EIG patterns in atomic or semiconductor quantum well nanostructures [35][36][37][38][39][40] . For example, two dimensional (2D) EIG in a double Λ-type atomic system was proposed utilizing incoherent pumping field 39 .…”

Section: Optically Induced Diffraction Gratings Based On Periodic Modmentioning

confidence: 99%

Optically induced diffraction gratings based on periodic modulation of linear and nonlinear effects for atom-light coupling quantum systems near plasmonic nanostructures

Vafafard

Sahrai

Siahpoush

et al. 2020

Sci Rep

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We investigate the quantum linear and nonlinear effects in a novel five-level quantum system placed near a plasmonic nanostructure. Such a quantum scheme contains a double-V-type subsystem interacting with a weak probe field. The double-V-subsystem is then coupled to an excited state by a strong coupling field, which can be a position-dependent standing-wave field. We start by analyzing the first-order linear as well as the third and fifth order nonlinear terms of the probe susceptibility by systematically solving the equations for the matter-fields. When the quantum system is near the plasmonic nanostructure, the coherent control of linear and nonlinear susceptibilities becomes inevitable, leading to vanishing absorption effects and enhancing the nonlinearities. We also show that when the coupling light involves a standing-wave pattern, the periodic modulation of linear and nonlinear spectra results in an efficient scheme for the electromagnetically induced grating (EIG). In particular, the diffraction efficiency is influenced by changing the distance between the quantum system and plasmonic nanostructure. The proposed scheme may find potential applications in future nanoscale photonic devices.

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Section: Optically Induced Diffraction Gratings Based On Periodic Modmentioning

confidence: 99%

Optically induced diffraction gratings based on periodic modulation of linear and nonlinear effects for atom-light coupling quantum systems near plasmonic nanostructures

Vafafard

Sahrai

Siahpoush

et al. 2020

Sci Rep

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show abstract

“…Among many systems, cold gases of trapped atoms have been utilized extensively, as their optical properties can be tuned through light-atom coupling. One paradigm is the creation of electromagnetically induced gratings (EIGs) by coupling atoms with spatially modulating laser lights in the form of standing waves [3][4][5][6][7][8][9][10][11][12][13][14]. Propagation of light fields in solid gratings leads to nontrivial diffraction, such as diffraction with perfect transmittance and focusing abilities [15,16] and the Talbot effect [17,18], which is known as a lensless selfimaging phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas

Hang

Huang

2019

Phys. Rev. A

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Understanding and manipulating the non-Hermitian optical property based on coherent atomic gases is of great importance and has attracted much theoretical and experimental attentions. Advancing this study to the nonlinear optics regime is highly desirable due to its importance in fundamental physics and potential applications. In this work, we propose to realize a tunable electromagnetically induced grating (EIG) with parity-time (PT ) symmetry in a cold gas of Rydberg atoms, where interatomic interactions between Rydberg states are mapped to strong and long-range optical interactions, and investigate nonlinear light diffractions in this system. We show that for far-field diffraction, laser beams incident upon the PT -symmetric EIG display distinctive asymmetric diffraction fringes, which can be actively manipulated through tuning the gain-absorption coefficient of the EIG, the incident intensity of the laser beam, and the nonlocality provided by Rydberg atoms. For near-field diffraction, the nonlinear Talbot diffraction carpets emerge and can be modulated by PT symmetry in the presence of strong nonlocal interactions, allowing the realization of controllable optical self-imaging. The results are not only imperative for the study of non-Hermitian nonlinear optics but also useful for characterizing the interatomic interaction in Rydberg gases and for designing new optical devices useful in optical information processing and transmission.

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“…[17][18][19][20][21]. Other schemes created diffraction gratings based on the modulation of Raman gain without EIT tools [22,23]. Here differing from the normal ones, the proposed Rydberg-EIG with the uppermost level replaced by a Rydberg level is significantly influenced by the vdWs interaction.…”

Section: Introductionmentioning

confidence: 99%

Unidirectional and controllable higher-order diffraction by a Rydberg electromagnetically induced grating

Zhao

et al. 2019

Phys. Rev. A

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A method for diffracting the weak probe beam into unidirectional and higher-order directions is proposed via a novel Rydberg electromagnetically induced grating, providing a new way for the implementations of quantum devices with cold Rydberg atoms. The proposed scheme utilizes a suitable and position-dependent adjustment to the two-photon detuning besides the modulation of the standing-wave coupling field, bringing a in-phase modulation which can change the parity of the dispersion. We observe that when the modulation amplitude is appropriate, a perfect unidirectional diffraction grating can be realized. In addition, due to the mutual effect between the van der Waals (vdWs) interaction and the atom-field interaction length that deeply improves the dispersion of the medium, the probe energy can be counter-intuitively transferred into higher-order diffractions as increasing the vdWs interaction, leading to the realization of a controllable higher-order diffraction grating via strong blockade.

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One- and two-dimensional Raman-induced diffraction gratings in atomic media

Cited by 27 publications

References 35 publications

Optically induced diffraction gratings based on periodic modulation of linear and nonlinear effects for atom-light coupling quantum systems near plasmonic nanostructures

Optically induced diffraction gratings based on periodic modulation of linear and nonlinear effects for atom-light coupling quantum systems near plasmonic nanostructures

Nonlinear light diffraction by electromagnetically induced gratings with PT symmetry in a Rydberg atomic gas

Unidirectional and controllable higher-order diffraction by a Rydberg electromagnetically induced grating

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