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The development of novel radio frequency atomic receivers brings attention to the theoretical description of atom-light interactions in sophisticated, multilevel schemes. Of special interest, are the schemes where several interaction paths…

Atomic Physics · Physics 2025-05-28 Bartosz Kasza , Sebastian Borówka , Wojciech Wasilewski , Michał Parniak

The efficiency of recombination is of crucial importance for the existence of ultracold plasmas (UCP), particularly, the ones formed in the magneto-optical traps. Unfortunately, the equilibrium thermodynamic treatment of the…

Plasma Physics · Physics 2026-05-04 Yurii V. Dumin , Ludmila M. Svirskaya , Eugen S. Savinykh

A three-level atomic medium can be made transparent to a resonant probe field in the presence of a strong control field acting on an adjacent atomic transition to a long-lived state, which can be represented by a highly excited Rydberg…

Quantum Physics · Physics 2017-03-16 David Petrosyan

Nonreciprocal transport phenomena indicate that the forward and backward flows differ, and are attributed to broken inversion symmetry. In this paper, we study the nonreciprocity of a thermal and thermoelectric transport of electronic…

Mesoscale and Nanoscale Physics · Physics 2019-03-13 Ryota Nakai , Naoto Nagaosa

In a non-reciprocal optical amplifier, gain depends on whether the light propagates forwards or backwards through the device. Typically, one requires either the magneto-optical effect, a temporal modulation, or an optical nonlinearity to…

The coupling of microwave and optical systems presents an immense challenge due to the natural incompatibility of energies, but potential applications range from optical interconnects for quantum computers to next-generation quantum…

Quantum Physics · Physics 2024-02-22 Sebastian Borówka , Uliana Pylypenko , Mateusz Mazelanik , Michał Parniak

We present a theoretical framework for a $\mathcal{PT}$-symmetric double-cavity molecular optomechanical system demonstrating nonreciprocal enhancement of multipartite quantum entanglement at elevated temperatures. All bipartite…

Quantum Physics · Physics 2026-01-01 E. Kongkui Berinyuy , C. Tchodimou , P. Djorwé , S. K. Singh , S. G. Nana Engo

Excitons in a semiconductor monolayer form a collective resonance that can reflect resonant light with extraordinarily high efficiency. Here, we investigate the nonlinear optical properties of such atomistically thin mirrors and show that…

Mesoscale and Nanoscale Physics · Physics 2022-03-02 Valentin Walther , Lida Zhang , Susanne F. Yelin , Thomas Pohl

Scattering of obliquely incident electromagnetic waves from periodically space-time modulated slabs is investigated. It is shown that such structures operate as nonreciprocal harmonic generators and spatial-frequency filters. For oblique…

Classical Physics · Physics 2018-01-03 Sajjad Taravati , Nima Chamanara , Christophe Caloz

Collective spins in thermal gases are at the core of a multitude of science and technology applications. In most of them, the random thermal motion of the particles is considered detrimental as it is responsible for decoherence and noise.…

Quantum Physics · Physics 2024-02-27 P. Bevington , J. Nicholson , J. D. Zipfel , W. Chalupczak , C. Mishra , V. Guarrera

Non-radiative energy transfer between a Rydberg atom and a polar molecule can be controlled by a DC electric field. Here we show how to exploit this control for state-resolved, non-destructive detection and spectroscopy of the molecules…

Atomic Physics · Physics 2023-11-28 Sabrina Patsch , Martin Zeppenfeld , Christiane P. Koch

Photon-magnon coupling, where electromagnetic waves interact with spin waves, and negative refraction, which bends the direction of electromagnetic waves unnaturally, constitute critical foundations and advancements in the realms of optics,…

Quantum Physics · Physics 2024-06-28 Junyoung Kim , Bosung Kim , Bo-Jong Kim , Haechan Jeon , Sang-Koog Kim

Light is characterized by its electric field, yet quantum optics has revealed the importance of monitoring photon-photon correlations at all orders. We here present a comparative study of two experimental setups, composed of cold and warm…

Although the temperature of a thermodynamic system is usually believed to be a positive quantity, under particular conditions, negative temperature equilibrium states are also possible. Negative temperature equilibriums have been observed…

Optics · Physics 2023-02-22 K. Baudin , J. Garnier , A. Fusaro , N. Berti , C. Michel , K. Krupa , G. Millot , A. Picozzi

Based on Document (1), by considering the retarded interaction of radiation fields, the third order transition probabilities of stimulated radiations and absorptions of light are calculated. The revised formulas of nonlinear polarizations…

General Physics · Physics 2008-04-22 Mei Xiaochun

When atoms are excited to high-lying Rydberg states they interact strongly with dipolar forces. The resulting state-dependent level shifts allow to study many-body systems displaying intriguing nonequilibrium phenomena, such as constrained…

Quantum Physics · Physics 2024-09-04 Chris Nill , Kay Brandner , Beatriz Olmos , Federico Carollo , Igor Lesanovsky

Nonlinear effects could play a crucial role in addressing optical nonreciprocal behaviors in scattering media. Such behaviors are, however, typically observed within a single transmission channel and predominantly in media with fixed…

Optics · Physics 2025-04-07 Xiao Liu , M. Artoni , G. C. La Rocca , Jin-Hui Wu

We question the microcanonical hypothesis, often made to account for the thermalization of complex closed quantum systems, on the specific example of a chain of two-level atoms optically driven by a resonant laser beam and strongly…

Quantum Physics · Physics 2016-02-05 Ruben Y. Cohen , Etienne Brion , Frédéric Grosshans

The interplay between strong long-range interactions and the coherent driving contribute to the formation of complex patterns, symmetry, and novel phases of matter in many-body systems. However, long-range interactions may induce an…

Nano-electro-opto-mechanical systems enable the synergistic coexistence of electrical, mechanical, and optical signals on a chip to realize new functions. Most of the technology platforms proposed for the fabrication of these systems so far…

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