Article
Materials Science, Multidisciplinary
Jingjing Jin, Wei Han, Huifang Zhao, Wenyuan Liu
Summary: This study investigates the Moire superlattice structures generated by the interplay between vortex lattice and optical lattice in two-component Bose-Einstein condensates. The possible superlattice patterns under different twist angles are studied, as well as the relative shift of the Moire superlattices in two components of the condensates.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Ekaterina Aladinskaia, Roman Cherbunin, Evgeny Sedov, Alexey Liubomirov, Kirill Kavokin, Evgeny Khramtsov, Mikhail Petrov, P. G. Savvidis, Alexey Kavokin
Summary: This study investigates the formation of exciton-polariton condensates in potlike traps created by optical pumping in a planar microcavity with embedded quantum wells. The experiment reveals the discrete spectrum of polariton eigenstates and demonstrates the control of these states through manipulating the shape and size of the trap and the spatial density distribution of the exciton reservoir.
Article
Physics, Multidisciplinary
Jin-Ling Wang, Wen Wen, Ji Lin, Hui-Jun Li
Summary: We propose a scheme to generate and control supersonic shock waves in a non-resonantly incoherent pumped exciton-polariton condensate, and different types of shock waves can be generated by regulating the incoherent pump. The ranges of parameters about various shock waves are determined by the initial incidence function and the cross-interaction between the polariton condensate and the reservoir. Our proposal not only discusses the shock wave in the exciton-polariton condensate system with the repulsive self-interaction, but also finds the shock wave in the condensates system with attractive self-interaction.
CHINESE PHYSICS LETTERS
(2023)
Article
Astronomy & Astrophysics
Decheng Ma, Chenglong Jia, Enrique Solano, Lucas Chibebe Celeri
Summary: The propagation of phonons in the presence of a particle sink with radial flow in a Bose-Einstein condensate is considered. It is found that due to the particle sink, which simulates a static acoustic black hole, the phonon experiences significant spacetime curvature at a considerable distance from the sink. The trajectory of the phonons is bent after passing by the particle sink, simulating the gravitational lensing effect in a Bose-Einstein condensate. Possible experimental implementations are discussed.
Article
Engineering, Mechanical
Zhi Tan, Huilin Gong, Bo Zhu, Honghua Zhong, Shufang Hu
Summary: We study the construction and dynamics of 2D anisotropic vortex-bright soliton in spinor dipolar Bose-Einstein condensates. The optical lattice and dipole-dipole interaction support stable anisotropic VB solitons even for small values of norm. By adjusting the depth of the lattice, one can control the stability of the solitons. Additionally, the collision dynamics of kicked solitons can lead to a transition from the bright component to the vortex component.
NONLINEAR DYNAMICS
(2023)
Article
Materials Science, Multidisciplinary
Yu-Xi Xu, Yuan Zhao, Qi-Hong Huang, De-Wei Wang, Zhuo Fan, Li Xue, Si-Liu Xu
Summary: The researchers theoretically investigated the localization of nonlinear matter waves in the PT-symmetric Rydberg atomic BECs system, finding that they can be generated and maintained with stability. Fundamental, higher-order, and vortical solitons were discovered, and their stability was evaluated through numerical simulation and linear-stability analysis. Additionally, the collision of solitons showed a quasi-elastic feature.
RESULTS IN PHYSICS
(2023)
Article
Optics
Samuel N. Alperin, Natalia G. Berloff
Summary: Researchers have found that the intrinsic particle flux in a photonic Bose-Einstein condensate can stabilize multiply charged vortex states and spontaneously form through dynamic symmetry breaking mechanisms during condensate formation. The vortex states are found to radiate acoustically at topologically quantized frequencies and are limited by a quantum Kelvin-Helmholtz instability. This represents a fundamental result in fluid dynamics for quantum photonic fluids.
Article
Materials Science, Multidisciplinary
Qingbo Wang, Jinguo Hu, Xianghua Su, Linghua Wen
Summary: The study explores the dynamics of rotating pseudo-spin-1/2 Bose-Einstein condensates with Rashba spin-orbit coupling in a quasicrystalline optical lattice. It was observed that the system evolves from an initial heliciform-stripe phase into a final visible vortex necklace with a giant vortex and a hidden vortex necklace. The corresponding spin texture undergoes a transition from a meron-antimeron pair to a half-antiskyrmion necklace during the dynamic evolution process.
RESULTS IN PHYSICS
(2021)
Article
Physics, Multidisciplinary
Jin Su, Hao Lyu, Yongping Zhang
Summary: In this study, we reveal self-interfering dynamics in a noninteracting Bose-Einstein condensate with engineered dispersion by optical lattice or spin-orbit coupling. The self-interference arises from the co-occupation of positive and negative effective mass regions in the engineered dispersion. The physical origin of the self-interference is explained by the Wigner distribution function of the self-interfering wave packet, and detailed features of the self-interference pattern are characterized.
Article
Optics
S. Matveenko, M. S. Bahovadinov, M. A. Baranov, G. Shlyapnikov
Summary: We discuss the finite-temperature damping of rotons in elongated Bose-condensed dipolar gases in the Thomas-Fermi regime in the tightly confined directions. The presence of multiple branches of excitations is crucial for the Landau damping and results in a significant increase in the damping rate. However, even rotons with energies close to the roton gap remain relatively stable in systems with a roton gap as small as 1 nK.
Article
Multidisciplinary Sciences
Jayanta Bera, Abdul Q. Batin, Suranjana Ghosh, Boris Malomed, Utpal Roy
Summary: This article studies the effects of time-periodic modulation on a quasi-one-dimensional Bose-Einstein condensate with contact and long-range dipolar interactions. The modulation generates a variety of harmonics in the condensate's oscillations, including multiple and combinational harmonics. The results of approximate analytical calculations are confirmed by simulations of the underlying Gross-Pitaevskii equation.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Optics
Matteo Bellitti, Garry Goldstein, Chris R. Laumann
Summary: Recent experimental progress has allowed the study of molecular superfluids (MSF) in thermal equilibrium, leading to investigations of their thermodynamic and dynamical responses. This review focuses on the theoretical understanding of the phase diagram and quasiparticle spectrum in both atomic superfluid (ASF) and MSF phases. The decay rates of the quasiparticles in these phases play a crucial role in microtrap tunneling experiments and can result in distinct features in the transmission spectrum of atoms passing through molecular clouds.
Article
Mechanics
Shan Zou, Wen-Kai Bai, Tao Yang, Wu-Ming Liu
Summary: The topological transition of vortex lines to vortex rings and hopfions was numerically investigated in trapped Bose-Einstein condensates. Nearly perfect vortex rings can be obtained by selecting suitable initial separations of vortex lines. The deformation of the formed rings depends on the initial separation of the lines.
Article
Mathematics, Applied
Ling-Zheng Meng, Yan-Hong Qin, Li-Chen Zhao
Summary: This paper investigates the properties and motion of vector solitons in Bose-Einstein condensates, exploring the nonintegrable cases of spin soliton solutions and their stability. The results show that these spin solitons are robust against spin-dependent interactions and noise, exhibiting features such as negative-positive mass transition, splitting, diffusion, and collisions.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2022)
Article
Optics
Ratheejit Ghosh, Chinmayee Mishra, Luis Santos, Rejish Nath
Summary: Gases of doubly dipolar particles, with both magnetic and electric dipole moments, offer intriguing novel possibilities. The interplay between doubly dipolar interactions, quantum stabilization, and external confinement results in a rich ground-state physics of supersolids and incoherent droplet arrays in doubly dipolar condensates. Our study reveals novel possibilities for engineering quantum droplets and droplet supersolids, including supersolid-supersolid transitions and the realization of supersolid arrays of pancake droplets.
Article
Optics
H. Tomczyk, D. Schmidt, C. Georges, S. Slama, C. Zimmermann
Article
Physics, Multidisciplinary
Arzu Yilmaz, Simon Schuster, Philip Wolf, Dag Schmidt, Max Eisele, Claus Zimmermann, Sebastian Slama
NEW JOURNAL OF PHYSICS
(2017)
Article
Optics
Matthias Mildner, Andreas Horrer, Monika Fleischer, Claus Zimmerman, Sebastian Slama
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2018)
Article
Physics, Multidisciplinary
Christian Stehle, Claus Zimmermann, Sebastian Slama
Article
Optics
J. Mihaljevic, S. Slama, R. Roepke, A. J. Meixner
Article
Physics, Multidisciplinary
D. Schmidt, H. Tomczyk, S. Slama, C. Zimmermann
PHYSICAL REVIEW LETTERS
(2014)
Article
Physics, Multidisciplinary
P. Wolf, S. C. Schuster, D. Schmidt, S. Slama, C. Zimmermann
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Elmer Suarez, David Auwaerter, Tiago J. Arruda, Romain Bachelard, Philippe W. Courteille, Claus Zimmermann, Sebastian Slama
NEW JOURNAL OF PHYSICS
(2019)
Article
Physics, Multidisciplinary
S. C. Schuster, P. Wolf, S. Ostermann, S. Slama, C. Zimmermann
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
Bernd Welker, Thorsten Oesterle, Sebastian Slama, Thomas Hoinkes, Arno Rauschenbeutel
Summary: This paper discusses the controlled positioning of single solid emitters in cavity modes using nanofibers with subwavelength diameter as a substrate. It analyzes how optical nanofibers influence the finesse of the cavity and the shape of the modes for various fiber diameters.
PHYSICAL REVIEW APPLIED
(2021)
Article
Optics
Elmer Suarez, Philip Wolf, Patrizia Weiss, Sebastian Slama
Summary: This study reports on the observation and explanation of superradiance decoherence caused by long-range dipole-dipole interactions between Rydberg atoms, which is confirmed through real-time monitoring and measurement of cavity transmission.
Article
Physics, Multidisciplinary
Matthias Mildner, Claus Zimmermann, Sebastian Slama
Summary: This paper presents optical detection and spectroscopy of ultracold atoms near a gold surface, using a probe light field to excite surface plasmon polaritons. By shifting the plasmon resonance due to the refractive index of the atomic gas, the sensitivity of detection is enhanced. The nondestructive detection of atoms with single atom resolution is achieved by detuning the laser from atomic resonance, making it suitable for quantum nondemolition measurements of matter wave amplitudes.
PHYSICAL REVIEW RESEARCH
(2021)
Article
Optics
Tiago J. Arruda, Romain Bachelard, John Weiner, Sebastian Slama, Philippe W. Courteille
Article
Optics
Tiago J. Arruda, Romain Bachelard, John Weiner, Sebastian Slama, Philippe W. Courteille
