Spatial quasiperiodic driving of a dissipative optical lattice and origin of directed Brillouin modes in a randomly diffusing cold atom cloud
- URL: http://arxiv.org/abs/2309.03325v2
- Date: Tue, 14 May 2024 23:20:23 GMT
- Title: Spatial quasiperiodic driving of a dissipative optical lattice and origin of directed Brillouin modes in a randomly diffusing cold atom cloud
- Authors: David Cubero, Kefeng Jiang, Alexander Staron, Casey Scoggins, Daniel Wingert, Ian Dilyard, Stone Oliver, Samir Bali,
- Abstract summary: Atoms confined in a three-dimensional dissipative optical lattice oscillate inside potential wells, hopping to adjacent wells, thereby diffusing in all directions.
Illumination by a weak probe beam modulates the lattice, yielding propagating atomic density waves, referred to as Brillouin modes which travel perpendicular to the direction of travel of the probe.
A systematic measurement of the transmitted probe spectra as a function of off-axis probe angle is presented, which is consistent with the velocity- and frequency-matching predictions from the detailed model.
- Score: 34.82692226532414
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Atoms confined in a three-dimensional dissipative optical lattice oscillate inside potential wells, occasionally hopping to adjacent wells, thereby diffusing in all directions. Illumination by a weak probe beam modulates the lattice, yielding propagating atomic density waves, referred to as Brillouin modes which travel perpendicular to the direction of travel of the probe. The probe is made incident at a small angle relative to a lattice symmetry axis, yielding a driving potential perturbation whose spatial period is not a multiple of the period of the underlying optical potential, thus enabling exploration of the regime of space quasiperiodic drive. A theory, based on the Fourier decomposition of the current into its atomic density wave contributions, reveals that unlike the previously studied time quasiperiodic case, wherein a lattice driven by two incommensurate frequencies may exhibit abrupt suppression in directed current as the driving transitions from quasiperiodic to periodic, a spatial-quasiperiodically driven lattice exhibits no such abrupt response. Further, detailed modeling of spatial-quasiperiodically driven lattices reveals that directed propagation occurs not only as a consequence of velocity-matching between the propagating modulation and the average velocity of the atom oscillating inside a well as was previously reported in the literature, but also as a distinct consequence of a new mechanism, namely, frequency-matching between the modulation frequency and the oscillation frequencies. A systematic measurement of the transmitted probe spectra as a function of off-axis probe angle is presented, which is consistent with the velocity- and frequency-matching predictions from the detailed model.
Related papers
- Qualitatively altered driven Dicke superradiance in extended systems due to infinitesimal perturbations [0.0]
The driven Dicke model, with interesting quantum phases induced by parameterized driving, has been intensively studied in cavities.
We simulate superconducting qubits coupled to a 1D waveguide as the extended system and theoretically investigate four kinds of perturbations.
arXiv Detail & Related papers (2024-08-09T08:35:15Z) - Negative transit time in non-tunneling electron transmission through graphene multilayers [0.0]
The temporal character of the electron propagation through graphene multilayers is traced to the band structure of bulk graphite.
The spatial reshaping of the wave packet at the resonances may help elucidate details of the streaking by an inhomogeneous field at the surface.
arXiv Detail & Related papers (2024-04-30T10:43:04Z) - Observation of self-oscillating supersonic flow across an acoustic
horizon in two dimensions [0.0]
We report observation of self-oscillating supersonic flows in a two-dimensional atomic superfluid.
The observed superflow appears to be modulated by quasi-periodic bursts of superluminal signals.
The presented experiment demonstrates a new method for creating supersonic flows in atomic superfluids.
arXiv Detail & Related papers (2023-04-20T22:34:13Z) - Dynamics of Transmon Ionization [94.70553167084388]
We numerically explore the dynamics of a driven transmon-resonator system under strong and nearly resonant measurement drives.
We find clear signatures of transmon ionization where the qubit escapes out of its cosine potential.
arXiv Detail & Related papers (2022-03-21T18:00:15Z) - Collectively pair-driven-dissipative bosonic arrays: exotic and
self-oscillatory condensates [0.0]
We analyze the superfluid phases accessible to bosonic arrays subject to novel mechanisms.
We show that, even in the presence of residual local loss, the system is stabilized into an exotic state with bosons condensed along the modes of a closed manifold.
This gives access to a plethora of different patterns, ranging from periodic and quasi-periodic ones with spatial wavelength, to homogeneously-populated closed-Fourier-manifolds.
arXiv Detail & Related papers (2021-11-14T12:15:59Z) - Localized vibrational modes in waveguide quantum optomechanics with
spontaneously broken PT symmetry [117.44028458220427]
We study theoretically two vibrating quantum emitters trapped near a one-dimensional waveguide and interacting with propagating photons.
In the regime of strong optomechanical interaction the light-induced coupling of emitter vibrations can lead to formation of spatially localized vibration modes, exhibiting parity-time symmetry breaking.
arXiv Detail & Related papers (2021-06-29T12:45:44Z) - Tunable Anderson Localization of Dark States [146.2730735143614]
We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system.
We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes.
The experiment opens the door to the study of various localization phenomena on a new platform.
arXiv Detail & Related papers (2021-05-25T07:52:52Z) - Probing particle-particle correlation in harmonic traps with twisted
light [0.0]
We explore the potential of twisted light as a tool to unveil many-body effects in parabolically confined systems.
We demonstrate the ability of the proposed twisted light probe to capture the transition of interacting fermions into a strongly correlated regime.
These features, observed in exact calculations for two electrons, are reproduced in adiabatic Time Dependent Density Functional Theory simulations.
arXiv Detail & Related papers (2021-05-12T16:07:59Z) - Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit.
We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront.
The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
arXiv Detail & Related papers (2020-03-09T21:27:02Z) - Multidimensional synthetic chiral-tube lattices via nonlinear frequency
conversion [57.860179997051915]
We propose and experimentally realize all-optical synthetic dimensions involving specially tailored simultaneous short- and long-range interactions.
We implement a synthetic gauge field with nonzero magnetic flux and observe the associated multidimensional dynamics of frequency combs.
arXiv Detail & Related papers (2020-02-20T07:08:35Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.