Tailoring superradiance to design artificial quantum systems

Longo, Paolo; Keitel, Christoph H.; Evers, Jörg

doi:10.1038/srep23628

Cited by 37 publications

(24 citation statements)

References 31 publications

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“…Superradiance is one of the enigmatic phenomena of quantum optics [1][2][3][4][5][6][7][8][9]. In recent years, there has been considerable advance in the understanding of superradiance [9][10][11][12][13][14][15][16][17][18][19][20][21][22] and in bringing out new features, especially the statistical aspects of superradiance [21,23,24]. For example, superradiance and subradiance have been understood to arise from the quantum interference of many paths which lead to a photon in the far zone [16].…”

Section: Introductionmentioning

confidence: 99%

Simulating Dicke-like superradiance with classical light sources

et al. 2016

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In this paper we investigate the close relationship between Dicke superradiance, originally predicted for an ensemble of two-level atoms in entangled states, and the Hanbury Brown and Twiss effect, initially established in astronomy to determine the dimensions of classical light sources like stars. By studying the state evolution of the fields produced by classical sources -defined by a positive Glauber-Sudarshan P function -when recording intensity correlations of higher order in a generalized Hanbury Brown and Twiss setup we find that the angular distribution of the last detected photon, apart from an offset, is identical to the superradiant emission pattern generated by an ensemble of two-level atoms in entangled symmetric Dicke states. We show that the phenomenon derives from projective measurements induced by the measurement of photons in the far field of the sources and the permutative superposition of quantum paths identical to those leading to superradiance in the case of single photon emitters. We thus point out an important similarity between classical sources and quantum emitters upon detection of photons if the particular photon source remains unknown. We finally present a compact result for the characteristic functional which generates intensity correlations of arbitrary order for any kind of light sources.

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Section: Introductionmentioning

confidence: 99%

Simulating Dicke-like superradiance with classical light sources

et al. 2016

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“…This fact allows one even to design the antenna arrays for tailoring superradiance. [ 89 ] The validity of the single‐photon superradiance model was confirmed in the experiments with cold atoms, and linear scaling with the number of atoms was confirmed as well. [ 90 ]…”

Section: Quantum Antennasmentioning

confidence: 87%

Quantum Antennas

2020

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Due to the recent groundbreaking developments of nanotechnologies, it became possible to create intrinsically quantum systems able to serve as high-directional antennas in terahertz, infrared, and optical ranges. In fact, the quantum antennas, as devices shaping light on the level of single quanta, have already become key elements in nanooptics and nanoelectronics. The quantum antennas are actively researched for possible implementations in quantum communications, quantum imaging and sensing, and energy harvesting. However, the design and optimization of these emitting/receiving devices are still rather undeveloped in comparison with the well-known methods for conventional radio-frequency antennas. This review provides a discussion of the recent achievements in the concept of the quantum antenna as an open quantum system emitting via interaction with a photonic reservoir. The review is focused on bridging the gap between quantum antennas and their macroscopic classical analogues. Furthermore, the way of quantum-antenna implementation is discussed for different configurations, based on such materials as plasmonic metals, carbon nanotubes, and semiconductor quantum dots.

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“…Refer to [22] for analytical calculations of Δ(a) and γ(a) in case when two atoms are separated by a distance a along the direction of the linear light polarization. This suggests that collective resonance shifts and linewidths can be controlled in an aggregation of many cold atoms in different geometries for designing an artificial optical transition [32]. Recent experiment [33] reports cooperative radiation of two neutral atoms strongly coupled to the single-mode field of an optical cavity.…”

Section: Two-atom Samplesmentioning

confidence: 99%

Strongly coupled cold atoms in bilayer dense lattices

Yoo

2018

New J. Phys.

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We theoretically investigate the optical response of many cold atoms within a pair of identical planar lattices mostly in a dense regime using microscopic electrodynamics numerical simulations. We find cooperative optical properties of the double atomic lattices to a normal incidence of low-intensity radiation at particular ranges of sample parameters. The main findings are that resonance shifts, linewidths, and transmittance could be engineered by varying layer-to-layer distance, lattice constant, and parameters for incident light. We also propose a bilayer atomic lattice could be modeled as two effective superatoms. Simulation results qualitatively agree with the ones from an isotropic infinite lattice model in the ranges of external parameters for which a mean-field approximation is not valid. Hopefully, our bilayer lattice samples might be exploited for implementing an optical switch and a photonic device in quantum computing.

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Tailoring superradiance to design artificial quantum systems

Cited by 37 publications

References 31 publications

Simulating Dicke-like superradiance with classical light sources

Simulating Dicke-like superradiance with classical light sources

Quantum Antennas

Strongly coupled cold atoms in bilayer dense lattices

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