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We describe a new experimental approach to probabilistic atom-photon (signal) entanglement. Two qubit states are encoded as orthogonal collective spin excitations of an unpolarized atomic ensemble. After a programmable delay, the atomic…

We show that simulated relativistic motion can generate entanglement between artificial atoms and protect them from spontaneous emission. We consider a pair of superconducting qubits coupled to a resonator mode, where the modulation of the…

Quantum Physics · Physics 2017-04-10 Laura García-Álvarez , Simone Felicetti , Enrique Rico , Enrique Solano , Carlos Sabín

We investigate the role of the collective antisymmetric state in entanglement creation by spontaneous emission in a system of two non-overlapping two-level atoms. We calculate and illustrate graphically populations of the collective atomic…

Quantum Physics · Physics 2009-11-10 Z. Ficek , R. Tanas

Pairs of entangled vortex photons can promise new prospects of application in quantum computing and cryptography. We investigate the possibility of generating such states via two-level atom emission induced by a single photon wave packet…

Quantum Physics · Physics 2025-09-30 D. V. Grosman , G. K. Sizykh , E. O. Lazarev , G. V. Voloshin , D. V. Karlovets

We study the dynamics of up to two Rydberg excitations and the correlation growth in a chain of atoms coupled to a photonic crystal waveguide. In this setup, an excitation can hop from one atom to another via exponentially decaying exchange…

Quantum Gases · Physics 2020-09-02 Yashwant Chougale , Jugal Talukdar , Tomás Ramos , Rejish Nath

We report a combined experimental and theoretical study of non-conventional lasing from higher multi-exciton states of a few quantum dot-photonic crystal nanocavity. We show that the photon output is fed from saturable quantum emitters…

Mesoscale and Nanoscale Physics · Physics 2016-03-04 S. Lichtmannecker , M. Florian , T. Reichert , M. Blauth , M. Bichler , F. Jahnke , J. J. Finley , C. Gies , M. Kaniber

This paper examines the feasibility of constructing an experiment which detects the atomic stimulation of a photon emission process. A beam of atoms (bosons) in an excited state is passed over an atomic trap which traps the atoms when they…

atom-ph · Physics 2009-10-28 J. J. Hope , C. M. Savage

We investigate the spontaneous emission of one atom placed near an oscillating reflecting plate. We consider the atom modeled as a two-level system, interacting with the quantum electromagnetic field in the vacuum state, in the presence of…

Quantum Physics · Physics 2019-11-12 Alessandro Ferreri , Michelangelo Domina , Lucia Rizzuto , Roberto Passante

A quantum emitter interacting with photons in a single optical-mode constitutes a one-dimensional atom. A coherent and efficiently coupled one-dimensional atom provides a large nonlinearity, enabling photonic quantum gates. Achieving a high…

We study the dynamics of single-photon absorption by a single emitter coupled to a one-dimensional waveguide that simultaneously provides channels for spontaneous emission decay and a channel for the input photon. We have developed a…

Optics · Physics 2012-08-21 Yuntian Chen , Martijn Wubs , Jesper Mork , A. Femius Koenderink

Photon antibunching in the light scattered by single quantum emitters is one of the hallmarks of quantum optics, providing an unequivocal demonstration of the quantized nature of the electromagnetic field. Antibunching can be intuitively…

Quantum Physics · Physics 2017-02-03 Luigi Garziano , Alessandro Ridolfo , Simone De Liberato , Salvatore Savasta

The temporal dynamics of stimulated emission is studied, with the particular emphasis on stimulated emission induced by x-ray pulses interacting with nuclei. In typical nuclear forward scattering experiments, the short incident x-ray pulse…

Quantum Physics · Physics 2015-05-20 Andreas Reichegger , Jörg Evers

We investigate theoretically the model of two \qubits" system (one qubit having an auxiliary level) interacting with a single-mode resonator in the ultrastrong coupling regime. We show that a single photon could simultaneously excite two…

Quantum Physics · Physics 2018-01-16 Qian Bin , Xin-You Lü , Shang-Wu Bin , Gui-Lei Zhu , Ying Wu

We show how an initial localized radiative excitation in a two-dimensional array of cold atoms can be converted into highly-directional coherent emission of light by protecting the spreading of the excitation across the array in a…

Quantum Gases · Physics 2020-05-06 K. E. Ballantine , J. Ruostekoski

The scattering of a flying photon by a two-level system ultrastrongly coupled to a one-dimensional photonic waveguide is studied numerically. The photonic medium is modeled as an array of coupled cavities and the whole system is analyzed…

We present a very simple model of a spontaneous emission from a two-level atom, interacting with a field of a finite number of states. Such a process is often said to occur because of the large number of equally-probable states of…

Quantum Physics · Physics 2012-04-03 Krzysztof Piotr Wójcik

High conversion efficiency between electrical and optical power is highly desirable both for high peak and high average power radiation sources. In this paper, we discuss a new mechanism based on stimulated superradiant emission in a…

Accelerator Physics · Physics 2014-10-30 Joseph Duris , Alex Murokh , Pietro Musumeci

We report the slow-light enhanced spin-resolved in-plane emission from a single quantum dot (QD) in a photonic crystal waveguide (PCW). The slow light dispersions in PCWs are designed to match the emission wavelengths of single QDs. The…

We investigate the relaxation dynamics of a single artificial atom interacting, via multiple coupling points, with a continuum of bosonic modes (photons or phonons) in a one-dimensional waveguide. In the non-Markovian regime, where the…

Quantum Physics · Physics 2020-10-07 Lingzhen Guo , Anton Frisk Kockum , Florian Marquardt , Göran Johansson

Atomic squeezing is studied for the case of large systems of radiating atoms, when collective effects are well developed. All temporal stages are analyzed, starting with the quantum stage of spontaneous emission, passing through the…

Statistical Mechanics · Physics 2009-11-10 V. I. Yukalov , E. P. Yukalova
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