A5068492089- Cold Atom Physics and Bose-Einstein Condensates
- Quantum, superfluid, helium dynamics
- Strong Light-Matter Interactions
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Physics of Superconductivity and Magnetism
- Spectroscopy and Quantum Chemical Studies
- Nonlinear Dynamics and Pattern Formation
- Mechanical and Optical Resonators
- Parallel Computing and Optimization Techniques
- Cosmology and Gravitation Theories
- Advanced Thermodynamics and Statistical Mechanics
- Distributed and Parallel Computing Systems
- High-Energy Particle Collisions Research
- Astro and Planetary Science
- Advanced Frequency and Time Standards
- Planetary Science and Exploration
- Nonlinear Photonic Systems
- Spectroscopy and Laser Applications
- Solar and Space Plasma Dynamics
- ICT Impact and Policies
- Insurance, Mortality, Demography, Risk Management
- Quantum chaos and dynamical systems
- Theoretical and Computational Physics
- Scientific Computing and Data Management
University of Belgrade
2015-2024
Institute of Physics Belgrade
2015-2024
Institute for Advanced Study
2013
University of Novi Sad
2011
Institute of Physics of the Slovak Academy of Sciences
2002
Abstract We propose in this White Paper a concept for space experiment using cold atoms to search ultra-light dark matter, and detect gravitational waves the frequency range between most sensitive ranges of LISA terrestrial LIGO/Virgo/KAGRA/INDIGO experiments. This interdisciplinary experiment, called Atomic Experiment Dark Matter Gravity Exploration (AEDGE), will also complement other planned searches exploit synergies with wave detectors. give examples extended sensitivity matter offered...
This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around world to discuss exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter gravitational waves. primary objective was lay groundwork an international TVLBAI proto-collaboration. collaboration aims unite researchers different institutions strategize...
Abstract We summarise the discussions at a virtual Community Workshop on Cold Atoms in Space concerning status of cold atom technologies, prospective scientific and societal opportunities offered by their deployment space, developments needed before atoms could be operated space. The technologies discussed include atomic clocks, quantum gravimeters accelerometers, interferometers. Prospective applications metrology, geodesy measurement terrestrial mass change due to, e.g., climate change,...
Abstract Progress in understanding quantum systems has been driven by the exploration of geometry, topology, and dimensionality ultracold atomic systems. The NASA Cold Atom Laboratory (CAL) aboard International Space Station enabled study bubbles, a terrestrially-inaccessible topology. Proof-of-principle bubble experiments have performed on CAL with an radiofrequency-dressing technique; alternate technique (dual-species interaction-driven bubbles) also proposed. Both techniques can drive...
We show by extensive numerical simulations and analytical variational calculations that elongated binary non-miscible Bose-Einstein condensates subject to periodic modulations of the radial confinement exhibit a Faraday instability similar seen in one-component condensates. Considering hyperfine states $^{87}$Rb condensates, we there are two experimentally relevant stationary state configurations: one which components form dark-bright symbiotic pair (the ground system), segregated (first...
In a recent experiment, Bose-Einstein condensate of ${}^{7}$Li has been excited by harmonic modulation the atomic $s$-wave scattering length via Feshbach resonance. By combining an analytical perturbative approach with extensive numerical simulations, we analyze emerging nonlinear dynamics system on mean-field Gross-Pitaevskii level at zero temperature. Resulting excitation spectra are presented and prominent features found: mode coupling, higher harmonics generation, significant shifts in...
Ultracold quantum gases confined in three-dimensional bubble traps are promising tools for exploring many-body effects on curved manifolds. As an alternative to the conventional technique of radio-frequency dressing, we propose create such shell-shaped Bose-Einstein condensates microgravity based dual-species atomic mixtures and analyze their properties as well feasibility realize symmetrically filled shells. Beyond similarities with dressing method collective-excitation spectrum, our...
Here we study properties of a homogeneous dipolar Bose-Einstein condensate in weak anisotropic random potential with Lorentzian correlation at zero temperature. To this end solve perturbatively the Gross-Pitaevskii equation to second order strength and obtain analytic results for disorder ensemble averages both superfluid depletion, state, sound velocity. For pure contact interaction vanishing length, reproduce seminal Huang Meng, which were originally derived within Bogoliubov theory around...
We investigate geometric resonances in Bose-Einstein condensates by solving the underlying time-dependent Gross-Pitaevskii (GP) equation for systems with two-and three-body interactions an axially-symmetric harmonic trap.To this end, we use a recently developed analytical method [Vidanović I et al 2011 Phys.Rev. A 84 013618], based on both perturbative expansion and Poincaré-Lindstedt analysis of Gaussian variational approach, as well detailed numerical study set ordinary differential...
We study the emergence of Faraday waves in cigar-shaped collisionally inhomogeneous Bose-Einstein condensates subject to periodic modulation radial confinement. Considering a Gaussian-shaped radially scattering length, we show through extensive numerical simulations and detailed variational treatment that spatial period emerging increases as inhomogeneity length gets weaker, it saturates once width reaches condensate. In regime strongly lengths, profile condensate is akin hollow cylinder,...
Based on the Lindblad master equation approach we obtain a detailed microscopic model of photons in dye-filled cavity, which features condensation light. To this end generalise recent non-equilibrium Kirton and Keeling such that dye-mediated contribution to photon-photon interaction light condensate is accessible due an interplay coherent dissipative dynamics. We describe steady-state properties system by analysing resulting equations motion both photonic matter degrees freedom. In...
We investigate the dynamics of a two-mode laser system by extending Tavis-Cummings model with dissipative channels and incoherent pumping applying mean-field approximation in thermodynamic limit. To this end we analytically calculate up to four possible non-equilibrium steady states (fixed points) determine corresponding complex phase diagram. Various phases are distinguished actual number fixed points their stability. In addition, apply three time-delayed Pyragas feedback control schemes....