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We calculate the intensity-field correlations in the light scattered by N cold atoms driven by a quasi-resonant laser field. Fundamental differences occur if the atomic state is an entangled single-excitation state or a coherent factorized…

Quantum Physics · Physics 2022-08-03 Nicola Piovella

We realized the most fundamental quantum optical experiment to prove the non-classical character of light: Only a single quantum emitter and a single superconducting nanowire detector were used. A particular appeal of our experiment is its…

We discuss the possibility of generating spin squeezed states by means of driven superradiance, analytically affirming and broadening the finding in [Phys. Rev. Lett. 110, 080502 (2013)]. In an earlier paper [Phys. Rev. Lett. 112, 140402…

Quantum Physics · Physics 2014-06-30 Elie Wolfe , S. F. Yelin

Recent works have shown that collective single photon spontaneous emission from an ensemble of $N$ resonant two-level atoms is a rich field of study. Superradiance describes emission from a completely symmetric state of $N$ atoms, with a…

Quantum Physics · Physics 2023-09-27 Nicola Piovella , Stefano Olivares

The Manipulation of g^(2)(0) peak value of Hanbury Brown-Twiss (HBT) effect is discussed with a holographic projection scheme. By the aid of target pattern artificially designed in the projection imaging system, the statistical distribution…

Optics · Physics 2025-10-24 Liming Li , Xueying Wu , Gongxiang Wei

We analyze the statistics of photons originating from amplified spontaneous emission generated by a quantum dot superluminescent diode. Experimentally detectable emission properties are taken into account by parametrizing the corresponding…

Quantum Physics · Physics 2015-06-23 S. Hartmann , F. Friedrich , A. Molitor , M. Reichert , W. Elsäßer , R. Walser

Integrated quantum photonics has recently emerged as a powerful platform for generating, manipulating, and detecting entangled photons. Multipartite entangled states lie at the heart of the quantum physics and are the key enabling resources…

Quantum Physics · Physics 2023-06-05 Leizhen Chen , Liangliang Lu , Lijun Xia , Yanqing Lu , Shining Zhu , Xiao-song Ma

In the dissipative quantum dynamics of a mesoscopic aggregate of excited two level systems (atoms) coupled to a single resonance mode of a cavity, two physical phenomena associated with superradiance appear. A pronounced emission peak on…

Quantum Physics · Physics 2016-02-17 Sebastian Fuchs , Joachim Ankerhold , Miles Blencowe , Björn Kubala

A cloud of cold N two-level atoms driven by a resonant laser beam shows cooperative effects both in the scattered radiation field and in the radiation pressure force acting on the cloud center-of-mass. The induced dipoles synchronize and…

Atomic Physics · Physics 2013-02-05 Tom Bienaime , Romain Bachelard , Nicola Piovella , Robin Kaiser

We carry out a model study on the interaction of a $V$-type three-level emitter with two quantized cavity modes which are weakly driven by two classical fields. The emitter may be an atom or a molecule with nondegenerate upper levels in…

Atomic Physics · Physics 2018-09-13 Arpita Pal , Bimalendu Deb

We investigate the super and sub-radiance characteristics of the radiation emitted from a system of three two-level atoms, in the GHZ and W-states. The dipolar coupling between atoms leads to two distinct configurations, one in which the…

Quantum Physics · Physics 2016-10-31 Shaik Ahmed , Prasanta K. Panigrahi , P. Anantha Lakshmi

The Dicke superradiance from an optically thin nanocomposite slab represented by metal nanoparticles dispersed in a dielectric matrix is predicted and its theory is developed from first principles. It is shown that the superradiance signal…

Optics · Physics 2021-06-18 V. G. Bordo

We show that it is possible to generate entanglement between two distant Bose-Einstein condensates by detection of Hanbury Brown-Twiss type correlations in photons Bragg-scattered by the condensates. Upon coincident detection of two photons…

Quantum Physics · Physics 2009-11-13 B. Deb , G. S. Agarwal

Epitaxial quantum dots have emerged as one of the best single-photon sources, not only for applications in photonic quantum technologies but also for testing fundamental properties of quantum optics. One intriguing observation in this area…

We study the dynamics of a driven Dicke model, where the collective spin is rotated with a constant velocity around a fixed axis. The time evolution of the mean photon number and of the atomic inversion is calculated using, on the one hand,…

Quantum Physics · Physics 2013-11-13 Michael Tomka , Dionys Baeriswyl , Vladimir Gritsev

We realize a mechanical analogue of the Dicke model, achieved by coupling the spin of individual neutral atoms to their quantized motion in an optical trapping potential. The atomic spin states play the role of the electronic states of the…

Quantum Physics · Physics 2019-01-09 A. Dareau , Y. Meng , P. Schneeweiss , A. Rauschenbeutel

Dicke superrandiance is a cooperative phenomenon which arises from the collective coupling of an ensemble of atoms to the electromagnetic radiation. Here we discuss the quantifying of quantum coherence for the Dicke model of superradiance…

Quantum Physics · Physics 2020-11-17 D. Z. Rossatto , D. P. Pires , F. M. de Paula , O. P. de Sá Neto

We consider the collective scattering by a cloud of $N$ two-level atoms driven by an uniform radiation field. Dense atomic clouds can be described by a continuous density and the problem reduces to deriving the spectrum of the atom-atom…

Optics · Physics 2015-03-31 Romain Bachelard , Nicola Piovella , Philippe Courteille

We investigate the evolution of the second-order temporal coherence during the emission of a superradiant burst by an elongated cloud of cold Rb atoms in free space. To do so, we measure the two-times intensity correlation function…

Quantum Physics · Physics 2024-10-14 Giovanni Ferioli , Igor Ferrier-Barbut , Antoine Browaeys

A non-classical light source emitting pairs of identical photons represents a versatile resource of interdisciplinary importance with applications in quantum optics and quantum biology. Emerging research fields, which benefit from such type…