High-frequency light reflector via low-frequency light control

Wang, Dawei; Zhu, Shi-Yao; Evers, Jörg; Scully, Marlan O.

doi:10.1103/physreva.91.011801

Cited by 15 publications

(12 citation statements)

References 35 publications

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“…The applications of SL's are promising. The transport of the superradiant excitations in SL's can be used to reflect high-frequency light (for example, x-ray or ultraviolet) with low-frequency light (visible light or infrared) [63]. The coupling strength between the lattice point is tunable, which allows us to prepare a superposition of two timed Dicke states that are far apart in momentum space for Heisenberg limit metrology [64].…”

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confidence: 99%

Superradiance Lattice

et al. 2015

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We show that the timed Dicke states of a collection of three-level atoms can form a tight-binding lattice in momentum space. This lattice, coined the superradiance lattice (SL), can be constructed based on electromagnetically induced transparency (EIT). For a one-dimensional SL, we need the coupling field of the EIT system to be a standing wave. The detuning between the two components of the standing wave introduces an effective uniform force in momentum space. The quantum lattice dynamics, such as Bloch oscillations, Wannier-Stark ladders, Bloch band collapsing and dynamic localization can be observed in the SL. The two-dimensional SL provides a flexible platform for Dirac physics in graphene. The SL can be extended to three and higher dimensions where no analogous real space lattices exist with new physics waiting to be explored. [31] in two-dimensional lattices. Nevertheless, the observation of these phenomena remains challenging. Novel types of lattices [32][33][34][35] provide new testing grounds for the rich physics mentioned above.In this Letter, we introduce the concept of the superradiance lattice (SL), a lattice in momentum space [36]. The conventional lattice has discrete translational symmetry in position space. The tight-binding model which allows electron hopping between nearest neighbours is diagonal in momentum space. The crystal momentum k is a good quantum number labelling each eigenstate. On the other hand, the SL corresponds to a tight-binding model in momentum space which has good quantum numbers r in position space. The dynamics of r in an SL is analogous to the dynamics of k in a real space lattice. We show that Bloch oscillations, Wannier Stark ladders and Bloch band collapsing can be observed in an SL based on electromagnetically induced transparency (EIT). The two-dimensional SL provides a tunable quantum optics model for Dirac physics in graphene.

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confidence: 99%

Superradiance Lattice

et al. 2015

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“…It is attributed to the destructive interference between the probability amplitudes of direct photoionization, and through the auto-ionizing-state indirect photoionization to the ionizing continuum [1][2][3][4][5]. Since its discovery, the asymmetric Fano resonance has been a characteristic feature of interacting quantum systems, such as quantum dots [6,7], plasmonic nanoparticles [8], photonic crystals [9,10], phonon transport [11], Mach-ZhenderFano interferometry [2,12], whispering-gallery-modes [13,14], extreme ultraviolet (XUV) attosecond spectroscopy [15], electromagnetic metamaterials [16] and bio-sensors [17,18].…”

Section: Introductionmentioning

confidence: 99%

Control of Fano resonances and slow light using Bose-Einstein condensates in a nanocavity

et al. 2017

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In this study, a standing wave in an optical nanocavity with Bose-Einstein condensate (BEC) constitutes a one-dimensional optical lattice potential in the presence of a finite two bodies atomic interaction. We report that the interaction of a BEC with a standing field in an optical cavity coherently evolves to exhibit Fano resonances in the output field at the probe frequency. The behaviour of the reported resonance shows an excellent compatibility with the original formulation of asymmetric resonance as discovered by Fano [U. Fano, Phys. Rev. 124, 1866(1961]. Based on our analytical and numerical results, we find that the Fano resonances and subsequently electromagnetically induced transparency of the probe pulse can be controlled through the intensity of the cavity standing wave field and the strength of the atom-atom interaction in the BEC. In addition, enhancement of the slow light effect by the strength of the atom-atom interaction and its robustness against the condensate fluctuations are realizable using presently available technology.

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“…As far as the applications in photonics are concerned, our system can serve as a prototype to create the entanglement of BEC and dark-state polaritons, or to be transformed into an all-optical Q-switching superradiant source 45 . Last but not least, recent advances in x-ray quantum optics 46 47 48 49 50 51 52 53 54 55 suggest that atomic mirrors operated in an x-ray domain are realizable 56 , which suggests that a follow-up study of the current system incorporating x-ray quantum optics will be interesting and desirable.…”

Section: Discussionmentioning

confidence: 99%

Controllable vacuum-induced diffraction of matter-wave superradiance using an all-optical dispersive cavity

Gou

et al. 2016

Sci Rep

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Cavity quantum electrodynamics (CQED) has played a central role in demonstrating the fundamental principles of the quantum world, and in particular those of atom-light interactions. Developing fast, dynamical and non-mechanical control over a CQED system is particularly desirable for controlling atomic dynamics and building future quantum networks at high speed. However conventional mirrors do not allow for such flexible and fast controls over their coupling to intracavity atoms mediated by photons. Here we theoretically investigate a novel all-optical CQED system composed of a binary Bose-Einstein condensate (BEC) sandwiched by two atomic ensembles. The highly tunable atomic dispersion of the CQED system enables the medium to act as a versatile, all-optically controlled atomic mirror that can be employed to manipulate the vacuum-induced diffraction of matter-wave superradiance. Our study illustrates a innovative all-optical element of atomtroics and sheds new light on controlling light-matter interactions.

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High-frequency light reflector via low-frequency light control

Cited by 15 publications

References 35 publications

Superradiance Lattice

Superradiance Lattice

Control of Fano resonances and slow light using Bose-Einstein condensates in a nanocavity

Controllable vacuum-induced diffraction of matter-wave superradiance using an all-optical dispersive cavity

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