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Lasers serve as the fundamental workhorses of photonic quantum technologies, with perfectly coherent light fields being essential for many protocols that generate nonclassical light, implement coherent control schemes, and initialize…

Mesoscale and Nanoscale Physics · Physics 2026-02-24 Yannik Brune , Marius Cizauskas , Marc Aßmann

This paper firstly presents the concept of using dual laser beam to irradiate the photovoltaic cell, so as to investigate the temperature dependency of the efficiency of long distance energy transmission. Next, the model on the multiple…

Materials Science · Physics 2015-02-03 Yu-Chen Yuan , Chen-Wu Wu

The relationship between thermal light and coherent pulses is of fundamental and practical interest. We now know that thermal light cannot be represented as a statistical mixture of single pulses. In this paper we ask whether or not thermal…

Quantum Physics · Physics 2017-07-06 Agata M. Branczyk , Aurelia Chenu , J. E. Sipe

We experimentally investigate fluctuations in the spectrum of ultrashort laser pulses propagating in air, close to the critical power for filamentation. Increasing the laser peak power broadens the spectrum while the beam approaches the…

The correct accounting for thermal effects is always a challenge when one needs to make quantitative predictions for any laser applications. In such complicated devices as quantum cascade lasers temperature strongly affects the operational…

Mesoscale and Nanoscale Physics · Physics 2023-01-20 Ivan I. Vrubel , Evgeniia D. Cherotchenko , Georgii D. Miskovets , Vladislav V. Dudelev , Grigorii S. Sokolovskii

We propose and implement a quantum procedure for enhancing the sensitivity with which one can determine the phase shift experienced by a weak light beam possessing thermal statistics in passing through an interferometer. Our procedure…

Quantum features of the baryon number fluctuations in subsystems of a hot and dense relativistic gas of fermions are analyzed. We find that the fluctuations in small systems are significantly increased compared to their values known from…

Nuclear Theory · Physics 2022-07-15 Arpan Das , Wojciech Florkowski , Radoslaw Ryblewski , Rajeev Singh

Optically levitated rotors are prime candidates for torque sensors whose precision is limited by the fluctuationsof the rotation frequency. In this work we investigate an optically levitated rotor at its fundamental thermal limitof…

A commonly held tenet is that lasers well above threshold emit photons in a coherent state, which follow a Poissonian statistics when measured in photon number. This feature is often exploited to build quantum-based random number generators…

Quantum Physics · Physics 2018-09-10 J. F. Dynes , M. Lucamarini , K. A. Patel , A. W. Sharpe , Z. L. Yuan , A. J. Shields

We describe a superconducting device capable of producing laser light in the visible range at half the Josephson generation frequency, with the optical phase of the light locked to the superconducting phase difference. An earlier proposed…

Mesoscale and Nanoscale Physics · Physics 2013-03-20 Frans Godschalk , Yuli V. Nazarov

Recent experiments have used scattering to map the flow of electrons in a two-dimensional electron gas. Among other things, the data from these experiments show perseverance of regular interference fringes beyond the kinematic thermal…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. E. J. Shaw , R. Fleischmann , E. J. Heller

Models for characterization of laser-accelerated electron via its produced bremsstrahlung are provided for both thin and thick targets. An effective temperature functional is proposed to overcome the so-called cold and hot "temperatures" in…

Instrumentation and Detectors · Physics 2018-08-01 Guillermo Hernández , Francisco Fernández

The operation of photoemission electron sources with wavelengths near the photoemission threshold has been shown to dramatically decrease the minimum achievable photocathode emittance, but at the cost of significantly reduced quantum…

Accelerator Physics · Physics 2018-08-22 Jai Kwan Bae , Ivan Bazarov , Pietro Musumeci , Siddharth Karkare , Howard Padmore , Jared Maxson

Inhomogeneities in the initial QCD matter density distribution increase the production of thermal photons significantly compared to a smooth initial-state-averaged profile in the region $p_T > 1$ GeV/$c$ in an ideal hydrodynamic…

High Energy Physics - Phenomenology · Physics 2015-06-11 Rupa Chatterjee , Hannu Holopainen , Thorsten Renk , Kari J. Eskola

A general relationship is presented between the statistics of thermal radiation from a random medium and its scattering matrix S. Familiar results for black-body radiation are recovered in the limit S to 0. The mean photocount is…

Quantum Physics · Physics 2013-04-08 C. W. J. Beenakker

Strong interaction between the light field and an atom is often achieved with cavities. Recent experiments have used a different configuration: a propagating light field is strongly focused using a system of lenses, the atom being supposed…

Quantum Physics · Physics 2011-08-11 Colin Teo , Valerio Scarani

It has been suggested that space-time might undergo fluctuations because of its intrinsic quantum nature. These fluctuations would pose a fundamental limit to the ability of measuring distances with arbitrary precision, beyond any…

General Relativity and Quantum Cosmology · Physics 2009-11-10 S. Schiller , C. Laemmerzahl , H. Mueller , C. Braxmaier , S. Herrmann , A. Peters

In this paper, we study the effect of thermal fluctuations on the thermodynamics of a black geometry with hyperscaling violation. These thermal fluctuations in the thermodynamics of this system are produced from quantum corrections of…

High Energy Physics - Theory · Physics 2017-08-24 Behnam Pourhassan , Mir Faizal , Sudhaker Upadhyay , Lina Al Asfar

We study the flight time fluctuations of a probe light propagating in a slab of nonlinear optical material with an effective fluctuating refractive index caused by thermal fluctuations of background photons at a temperature $T$, which are…

General Relativity and Quantum Cosmology · Physics 2019-07-25 Jiawei Hu , Hongwei Yu

Motivated by recent ``circuit QED'' experiments we study the lasing transition and spectral properties of single-qubit lasers. In the strong coupling, low-temperature regime quantum fluctuations dominate over thermal noise and strongly…

Mesoscale and Nanoscale Physics · Physics 2010-11-09 Stephan André , Pei-Qing Jin , Valentina Brosco , Jared H. Cole , Alessandro Romito , Alexander Shnirman , Gerd Schön
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