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361
Principles of an atomtronic transistor
Published 2016-01-01“…A semiclassical formalism is used to investigate the transistor-like behavior of ultracold atoms in a triple-well potential. Atom current flows from the source well, held at fixed chemical potential and temperature, into an empty drain well. …”
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362
Radio-frequency dressed lattices for ultracold alkali atoms
Published 2015-01-01“…Ultracold atomic gases in periodic potentials are powerful platforms for exploring quantum physics in regimes dominated by many-body effects as well as for developing applications that benefit from quantum mechanical effects. …”
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363
Force sensing based on coherent quantum noise cancellation in a hybrid optomechanical cavity with squeezed-vacuum injection
Published 2016-01-01“…The force detector, which allows for a continuous, broadband detection of weak forces well below the standard quantum limit (SQL), is formed by a single optical cavity simultaneously coupled to a mechanical oscillator and to an ensemble of ultracold atoms. The latter acts as a negative-mass oscillator so that atomic noise exactly cancels the backaction noise from the mechanical oscillator due to destructive quantum interference. …”
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364
Ultracold molecular spectroscopy: toward the narrow-line cooling of molecules
Published 2015-01-01“…The repetition rate of the experiment was approximately 10 Hz, which was only limited by the time needed to load ultracold atoms into the magneto-optical trap. To demonstrate the performance, we investigated the hyperfine structures of the vibrational ground states of the ${{X}^{1}}{{\Sigma }^{+}}$ and ${{b}^{3}}{{\Pi }_{{{0}^{+}}}}$ states of KRb molecules. …”
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365
Josephson-like Oscillations in Toroidal Spinor Bose–Einstein Condensates: A Prospective Symmetry Probe
Published 2022-04-01“…Josephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. …”
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366
Addressed qubit manipulation in radio-frequency dressed lattices
Published 2016-01-01“…Precise control over qubits encoded as internal states of ultracold atoms in arrays of potential wells is a key element for atomtronics applications in quantum information, quantum simulation and atomic microscopy. …”
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367
Realizing type-II Weyl points in an optical lattice
Published 2017“…In this paper, we propose a generalized two level system exhibiting type-II Weyl points that can be realized using ultracold atoms in an optical lattice. The system is engineered using a three-dimensional lattice with complex π phase tunneling amplitudes. …”
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Journal Article -
368
Hubbard model: Pinning of occupation numbers and role of symmetries
Published 2015“…Based on recent progress in the field of ultracold atoms our findings suggest an experimental setup for the realization of the pinning effect.…”
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369
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370
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371
Modeling particle loss in open systems using Keldysh path integral and second order cumulant expansion
Published 2023-12-01“…Using this method in the Markovian limit, we compute the particle-loss dynamics in various models of ultracold atomic gases, including a one-dimensional Bose-Hubbard model with two-particle losses and a multicomponent Fermi gas with interactions tuned by an optical Feshbach resonance. …”
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372
Drag-induced dynamical formation of dark solitons in Bose mixture on a ring
Published 2022-10-01“…So far, fruitful studies have been conducted in ultracold atomic systems where nontrivial soliton dynamics occurred due to intercomponent density-density interaction. …”
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373
A lattice pairing-field approach to ultracold Fermi gases
Published 2024-04-01“…The introduction of a pairing field may indeed be convenient for studies of, e.g., the finite-temperature phase structure and critical behavior of, e.g., ultracold atomic Fermi gases. Moreover, such a formalism allows to directly compute the momentum and frequency dependence of the pair propagator, from which the pair-correlation function can be extracted. …”
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374
Mutual friction and diffusion of two-dimensional quantum vortices
Published 2023-03-01“…Dissipation of quantum vortex motion is fundamental to superfluid dynamics and quantum turbulence, yet there is currently a large gap between theory and experiments with ultracold atoms. Here we present a microscopic open quantum systems theory of thermally damped vortex motion in oblate atomic superfluids that includes previously neglected energy-damping interactions between superfluid and thermal atoms. …”
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375
Self-ordered supersolid phase beyond Dicke superradiance in a ring cavity
Published 2023-01-01“…The supersolid phase characterized by the superfluid and long-range spatial periodicity of crystalline order is central to many branches of science ranging from condensed matter physics to ultracold atomic physics. Here we study a self-ordered checkerboard supersolid phase originating from dynamical spin-orbit coupling for a transversely pumped atomic Bose-Einstein condensate trapped in a ring cavity, corresponding to a superradiant anti-Tavis-Cummings phase transition. …”
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376
Exploring helical phases of matter in bosonic ladders
Published 2020-12-01“…Ladder models of ultracold atoms offer a versatile platform for the experimental and theoretical study of different phenomena and phases of matter linked to the interplay between artificial gauge fields and interactions. …”
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377
Dynamics of matter-wave quantum emitters in a structured vacuum
Published 2020-12-01“…In waveguide quantum-electrodynamics based on photonic crystals, this modification is exploited to engineer atom-photon interactions near a band edge, but the physics of coupling to an entire band has not yet been explored in experiments. Using ultracold atoms in an optical lattice, we study the decay dynamics of matter-wave quantum emitters coupled to a single band of an effective photonic crystal waveguide structure with tunable characteristics. …”
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378
Bistability and nonequilibrium condensation in a driven-dissipative Josephson array: A c-field model
Published 2023-08-01“…Our model is closely related to the so-called Lugiato-Lefever equation, and thus establishes new connections between nonequilibrium dynamics of ultracold atoms with nonlinear optics, exciton-polariton superfluids, and driven damped sine-Gordon systems.…”
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379
Quantifying the impact of state mixing on the Rydberg excitation blockade
Published 2020-05-01“…The Rydberg excitation blockade has been at the heart of an impressive array of recent achievements; however, state-mixing interactions can compromise its efficiency. When ultracold atoms are excited to Rydberg states near Förster resonance, up to ∼50% of atoms can be found in dipole coupled product states within tens of ns after excitation. …”
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380
Optimal Hamiltonian Simulation by Quantum Signal Processing
Published 2017Get full text
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