Article
Optics
A. D. Garcia-Orozco, L. Madeira, M. A. Moreno-Armijos, A. R. Fritsch, P. E. S. Tavares, P. C. M. Castilho, A. Cidrim, G. Roati, V. S. Bagnato
Summary: We studied the emergence of universal scaling in the time-evolving momentum distribution of a harmonically trapped three-dimensional Bose-Einstein condensate, which was parametrically driven to a turbulent state. We found that the out-of-equilibrium dynamics post excitation can be described by a single function due to nearby nonthermal fixed points. The observed behavior connects the dynamics of a quantum turbulent state to several far-from-equilibrium phenomena.
Article
Multidisciplinary Sciences
Mengjie Wei, Wouter Verstraelen, Konstantinos Orfanakis, Arvydas Ruseckas, Timothy C. H. Liew, Ifor D. W. Samuel, Graham A. Turnbull, Hamid Ohadi
Summary: The authors demonstrate the on-the-fly reconfigurable optical trapping of organic polariton condensates, which are delocalized over a macroscopic distance from the excitation region. This study holds great potential for future research on polaritonic lattice physics.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
S. Baryshev, A. Zasedatelev, H. Sigurdsson, I Gnusov, J. D. Topfer, A. Askitopoulos, P. G. Lagoudakis
Summary: In this study, we conducted full polarization tomography on photon correlations in a spinor exciton-polariton condensate. Our measurements demonstrate the different forms of condensate pseudospin mean-field dynamics and their intrinsic relation to the condensate photon statistics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Silvana Palacios Alvarez, Pau Gomez, Simon Coop, Roberto Zamora-Zamora, Chiara Mazzinghi, Morgan W. Mitchell
Summary: We present a magnetic sensor with extremely high energy resolution, applied in the detection of Rb-87 single-domain spinor Bose-Einstein condensates. By utilizing nondestructive Faraday rotation probing, we have achieved a low-frequency magnetic sensitivity of 72(8) fT, and measured the volume, spin coherence time, and readout noise of the condensate experimentally.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Mathematics, Interdisciplinary Applications
Mikhail N. Smolyakov
Summary: In this paper, quantization of a weakly nonideal Bose gas at zero temperature is performed along the lines of the well-known Bogolyubov approach. By introducing nonoscillation modes and calculating nonlinear corrections, the analysis successfully recovers canonical commutation relations and solves the issue of nonconserved particle number at least in the case of free quasi-particles.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Optics
M. Miskeen Khan, H. Tercas, J. T. Mendonca, J. Wehr, C. Charalambous, M. Lewenstein, M. A. Garcia-March
Summary: The study investigates the quantum motion of an impurity atom in a Bose-Einstein condensate in arbitrary dimensions, showing superdiffusive behavior, dimension-dependent average energy, and non-Markovianity of particle motion. Trapped impurity atoms exhibit stronger position squeezing in lower dimensions.
Article
Optics
Yuhang Nie, Jun-Hui Zheng, Tao Yang
Summary: In this article, we investigate the Bogoliubov excitation spectrum of quantum droplets in an optical lattice and classify the collective excitations into different modes. The oscillation frequencies and phononic modes of the droplets are measured through experimental measurements. Furthermore, the instability caused by density fluctuations and the critical filling of atoms are discussed. This work is essential for understanding the superfluid nature of quantum droplets in an optical lattice.
Article
Optics
Boyao Li, Xingjie Wang, Yaoyao Liang, Jinghua Sun, Sufang Zhu, Xiaoyong Chen, Guiyao Zhou
Summary: This study reports the generation of vectorial solitons in a single cavity induced by dual-core fiber assisted ultrafast fiber lasers. It was found that four-component polarized rotation vector solitons (PRVS) are generated using the dispersive Fourier transformation technique. Furthermore, by controlling the soliton phase offset in dual-core fiber, the soliton rain state of multi pulse evolution can be obtained.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Optics
Ralf Wanzenboeck, Stefan Donsa, Harald Hofstaetter, Othmar Koch, Peter Schlagheck, Iva Brezinova
Summary: The study investigates the chaos phenomenon in the mean-field limit of a bosonic quantum many-body system, demonstrating that the system rapidly loses coherence with a rate determined by the Lyapunov exponent, which in turn affects the visibility of interference fringes.
Article
Physics, Fluids & Plasmas
L. G. F. Soares, F. Haas
Summary: An antiproton plasma confined in a quasi-1D device is described using a variational approach with self-consistent fluid formulation, while retaining thermal and Coulomb effects with the use of time-dependent variational method. Certain assumptions are made for number density and fluid velocity fields, simplifying the problem to ordinary nonlinear differential equations. Numerical simulations of the nonlinear dynamics for realistic parameters are performed, with adiabatic cooling and assumption of adiabatic equation of state for closure.
PHYSICS OF PLASMAS
(2021)
Article
Physics, Multidisciplinary
Ouyang Xiao-fang
Summary: This paper proposes a scheme for preparing a hybrid entangled state between a Bose-Einstein condensate and an optical field. By calculating entanglement parameters using the bosonization method, it is shown that the hybrid entangled state can be prepared in a dynamic process, and that increasing entanglement can be achieved by decreasing the linear coupling strength.
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
(2022)
Article
Physics, Multidisciplinary
Timon A. Hilker, Lena H. Dogra, Christoph Eigen, Robert P. Smith, Zoran Hadzibabic
Summary: The two sounds in a highly compressible fluid are investigated using an ultracold Bose gas. The results show that only one sound persists at different temperatures, which is consistent with the hydrodynamic theory.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Alessandro Fabbri, Roberto Balbinot
Summary: This study presents a simple model to describe the formation of an acoustic black hole in a Bose-Einstein condensate, allowing for analytical computation of the evolution of the corresponding density-density correlator over time. The emergence of analog Hawking radiation is observed from a quantum atmosphere region significantly displaced from the horizon, and is quantitatively studied at T = 0 and also in the presence of an initial temperature T as commonly found in experiments.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Nathan M. Myers, Francisco J. Pena, Oscar Negrete, Patricio Vargas, Gabriele De Chiara, Sebastian Deffner
Summary: The study shows that using a Bose gas as the working medium, the engine performs best in the BEC phase state, with enhanced power output and higher efficiency at maximum power.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Jing Li, E. Ya Sherman, Andreas Ruschhaupt
Summary: This paper explores the potential of a spin-orbit-coupled Bose-Einstein condensate in thermodynamic cycles by proposing a quantum heat engine using the condensate as a working medium. The cooling and heating processes are simulated through the contacts between the condensate and external magnetized and demagnetized media. The efficiency of the proposed engine is then studied, with the existence of a critical value of spin-orbit coupling that is related to the engine's maximum efficiency.
Article
Optics
Andreas Neuzner, Matthias Koerber, Stephan Duerr, Gerhard Rempe, Stephen Ritter
Article
Multidisciplinary Sciences
Daniel Tiarks, Steffen Schmidt, Gerhard Rempe, Stephan Duerr
Article
Optics
Stephan Duerr
Article
Optics
Stefan Riedl, Matthias Lettner, Christoph Vo, Simon Baur, Gerhard Rempe, Stephan Duerr
Article
Optics
Christian Schneider, Martin Enderlein, Thomas Huber, Stephan Duerr, Tobias Schaetz
Article
Physics, Multidisciplinary
Birger Horstmann, Stephan Duerr, Tommaso Roscilde
PHYSICAL REVIEW LETTERS
(2010)
Article
Physics, Multidisciplinary
M. Lettner, M. Muecke, S. Riedl, C. Vo, C. Hahn, S. Baur, J. Bochmann, S. Ritter, S. Duerr, G. Rempe
PHYSICAL REVIEW LETTERS
(2011)
Article
Physics, Multidisciplinary
Simon Baur, Daniel Tiarks, Gerhard Rempe, Stephan Duerr
PHYSICAL REVIEW LETTERS
(2014)
Article
Physics, Multidisciplinary
Daniel Tiarks, Simon Baur, Katharina Schneider, Stephan Duerr, Gerhard Rempe
PHYSICAL REVIEW LETTERS
(2014)
Article
Physics, Multidisciplinary
Daniel Tiarks, Steffen Schmidt-Eberle, Thomas Stolz, Gerhard Rempe, Stephan Duerr
Article
Physics, Multidisciplinary
Thomas Stolz, Hendrik Hegels, Maximilian Winter, Bianca Roehr, Ya-Fen Hsiao, Lukas Husel, Gerhard Rempe, Stephan Duerr
Summary: This article introduces a new platform aimed at improving the efficiency of optical qubit logic gates. By combining the characteristics of two established quantum nonlinear systems, researchers have achieved a CNOT gate between two optical photons and generated entangled states of up to five photons.
Article
Optics
Steffen Schmidt-Eberle, Thomas Stolz, Gerhard Rempe, Stephan Duerr
Article
Optics
Andreas Neuzner, Stephan Duerr, Matthias Koerber, Stephan Ritter, Gerhard Rempe
Article
Optics
Dominik M. Bauer, Matthias Lettner, Christoph Vo, Gerhard Rempe, Stephan Duumlrr