Article
Physics, Multidisciplinary
Sh N. Mardonov, B. J. Ahmedov, E. Ya Sherman
Summary: The effects of the polaronic effects in non-self-gravitating Bose-Einstein condensates on dark matter-related interactions are studied in this research. The dynamics of the condensate and its impact on the motion of embedded particles are analyzed.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Astronomy & Astrophysics
Shukhrat N. N. Mardonov, Bobir A. A. Toshmatov, Bobomurat J. J. Ahmedov, Shukurillo T. T. Inoyatov
Summary: The concept of polaron quasiparticles was first introduced in the pioneering papers by Landau and Feynman in the 1930s and 1940s. It describes the phenomenon of an external particle producing a bound state in an embedded medium. Since then, the study of polaron quasiparticles has been an active area of research in condensed matter physics, with a wide range of applications in magnetic phenomena and lattice deformation properties. This paper provides a comprehensive review of the polaron quasiparticle phenomenon, including its historical origins, theoretical developments, and current research. The review also discusses the various applications of polaron quasiparticles in condensed matter physics, including in magnetic phenomena and lattice deformation properties. It concludes with an outlook on future directions of research in this field.
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
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
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
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
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
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
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
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
Physics, Fluids & Plasmas
Yue Jian, Xin Qiao, Jun-Cheng Liang, Zi-Fa Yu, Ai-Xia Zhang, Ju-Kui Xue
Summary: This study investigates the stability and superfluidity of a Bose-Einstein condensate in a two-leg ladder with magnetic field, revealing three phases and a strong dependence on various parameters. The atomic interaction strength plays a significant role in modifying the energy band structure during phase transitions. Furthermore, the study shows that the dynamics and superfluidity of the system can be controlled by adjusting the atomic interaction strength, rung-to-leg coupling ratio, and magnetic flux.
Article
Physics, Multidisciplinary
T. Dieterle, M. Berngruber, C. Hoelzl, R. Loew, K. Jachymski, T. Pfau, F. Meinert
Summary: The study investigates the transport dynamics of a single low-energy ionic impurity in a Bose-Einstein condensate by implanting the impurity using fast electric field pulses. The results show diffusive transport properties of the impurity and allow for the measurement of its mobility through comparison with simulations. This research opens up a new path for studying dynamics of charged quantum impurities in ultracold matter.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
A. Camacho-Guardian, M. A. Bastarrachea-Magnani, G. M. Bruun
Summary: Researchers have discovered mediated photon-photon interactions in a semiconductor microcavity, showing that interactions mediated by sound modes in a Bose-Einstein condensate can support a bound state of two quasiparticles, creating a dimer state of photons propagating through the condensate.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Magnus G. Skou, Thomas G. Skov, Nils B. Jorgensen, Kristian K. Nielsen, Arturo Camacho-Guardian, Thomas Pohl, Georg M. Bruun, Jan J. Arlt
Summary: Advancing our understanding of non-equilibrium phenomena in quantum many-body systems remains a major challenge in physics. The experimental observation of the non-equilibrium dynamics of a quantum impurity immersed in a bosonic environment reveals a systematic picture of polaron formation and provides a link between few-body processes and many-body dynamics. The measurements demonstrate universal dynamical behavior in interacting many-body systems and offer new pathways to study non-equilibrium quantum phenomena.
Article
Physics, Multidisciplinary
A. Camacho-Guardian, N. R. Cooper
Summary: Moire excitons, in the presence of cavity photons, exhibit a rich phase diagram with pronounced bistabilities reflecting strong interexciton interactions. The system can realize single- and multiphoton lasers with the presence of incoherent pumping of excitons.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Atomic, Molecular & Chemical
Luis Fernando Cardenas-Castillo, Arturo Camacho-Guardian
Summary: This article studies the quasiparticle properties of two-dimensional strongly interacting Bose polarons in atomic Bose-Einstein condensates and polariton gases, using the non-self consistent T-matrix approximation. For the atomic case, the spectral and quasiparticle properties of the polaron in the presence of a magnetic Feshbach resonance are studied. Additionally, a polaron arising from the dressing of a single itinerant electron by a quantum fluid of polaritons in a semiconductor microcavity is also investigated. The properties of these polarons can be controlled by tuning the cavity mode.
Article
Physics, Multidisciplinary
Shanshan Ding, G. A. Dominguez-Castro, Aleksi Julku, Arturo Camacho-Guardian, Georg M. Bruun
Summary: This study investigates mobile impurities immersed in a Bose-Einstein condensate in a two-dimensional lattice to understand the interactions and possible bound states of quasiparticles. The results show the emergence of a new type of quasiparticle and the spatial influence of impurity-boson interactions. By deriving an effective Schrodinger equation, it is demonstrated that the attractive interaction between two polarons in the lattice leads to the formation of bound states, known as bipolarons.
Article
Materials Science, Multidisciplinary
J. Andres Rojas-Sanchez, Yesenia A. Garcia Jomaso, Brenda Vargas, David Ley Dominguez, Cesar L. Ordonez-Romero, Hugo A. Lara-Garcia, Arturo Camacho-Guardian, Giuseppe Pirruccio
Summary: Frenkel polaritons, hybrid light-matter quasiparticles, hold promise for optoelectronic device design, but their sensitivity to imperfections limits their implementation. Topology has been suggested as a solution to overcome defects and fabrication limitations. In this study, we propose a lattice of cavities to realize topological Frenkel polaritons based on the one-dimensional Su-Schrieffer-Heeger model. By engineering cavity configurations, we demonstrate access to both topological and trivial phases using classical and quantum theories. We analyze the impact of inherent vibron modes and fabrication defects on the robustness of polariton's topological phases. This study presents a simple, experimentally realistic setup for realizing topological polaritons at room temperature.
Article
Materials Science, Multidisciplinary
Yesenia A. Garcia Jomaso, Brenda Vargas, David Ley Dominguez, Cesar L. Ordonez-Romero, Hugo A. Lara-Garcia, Arturo Camacho-Guardian, Giuseppe Pirruccio
Summary: Organic polaritons, which are hybridized light-matter excitations, can be used as a platform for optical interfaces at room temperature. Previous studies have described polaritons as coherent excitations according to Landau's quasiparticle theory. However, this study reveals the role of incoherent matter excitations and demonstrates the breakdown of the quasiparticle picture at the entrance of upper polaritons into a continuum of molecular excitations. This leads to the formation of a more complex quantum state beyond Landau's formalism.
Article
Materials Science, Multidisciplinary
Aleksi Julku, Jami J. Kinnunen, Arturo Camacho-Guardian, Georg M. Bruun
Summary: It is demonstrated that electrons interacting with a Bose-Einstein condensate (BEC) of exciton-polaritons can realize a two-dimensional topological p(x) + ip(y) superconductor. This is caused by an attractive interaction mediated by the BEC, which overcompensates the repulsive Coulomb interaction between the electrons. The hybrid light-matter nature of the BEC is crucial for achieving this.
Article
Materials Science, Multidisciplinary
A. Camacho-Guardian, M. Bastarrachea-Magnani, T. Pohl, G. M. Bruun
Summary: This study investigates collisions between dark-state polaritons in three-level systems and discovers a resonant process that enhances the interactions between polaritons substantially. It provides a promising approach for quantum nonlinear optics.
Article
Materials Science, Multidisciplinary
A. Camacho-Guardian, N. R. Cooper
Summary: Investigated the influence of nonlocal interactions on the optical response of strongly interacting moire exciton-polaritons under strong optical driving. Found that nonlocal interactions can strongly affect the steady-state properties, resulting in pronounced distortions of multiphoton resonances and spontaneous breaking of translational symmetry.
Article
Physics, Multidisciplinary
Magnus G. Skou, Kristian K. Nielsen, Thomas G. Skov, Andreas M. Morgen, Nils B. Jorgensen, Arturo Camacho-Guardian, Thomas Pohl, Georg M. Bruun, Jan J. Arlt
Summary: Spectroscopic and interferometric measurements are essential for extracting the fundamental properties of quantum many-body systems. Interferometry can elucidate the dynamical evolution of the system, while spectroscopy provides precise measurements of equilibrated energies. The comparison of interferometric and spectroscopic timescales in the study of the Bose polaron reveals important insights into the quasiparticle physics.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Optics
E. R. Christensen, E. Garrido, A. S. Jensen
Summary: This study investigates wave functions, phase shifts, and corresponding elastic cross sections for two short-range interacting particles in a deformed external oscillator field. The equivalent d method with a noninteger dimension d is used. Analytic expressions for scattering lengths and phase shifts are derived using a square-well potential. The study also considers the dimension, d(E), for infinite scattering length and examines the occurrence of the Efimov effect by the addition of a third particle. It is shown that the phase shifts are the same in both d and three-dimensional space, indicating that the d method can be used to obtain low-energy two-body elastic cross sections in an external field.
Article
Optics
Esben Rohan Christensen, Arturo Camacho-Guardian, Georg M. Bruun
Summary: This study explores the properties of a mobile ion immersed in a quantum degenerate gas of fermionic atoms, revealing distinct characteristics of ionic Fermi polarons compared to neutral polaron. Ionic polarons exhibit multiple stable states and smooth transitions from repulsive to attractive with increasing interaction strength. Interestingly, the residue of the ionic polaron increases with Fermi density, which contrasts with the behavior of neutral polarons.