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Atomic Force Microscopy01:08

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Updated: Jul 4, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Andreev-like reflections with cold atoms.

A J Daley1, P Zoller, B Trauzettel

  • 1Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, A-6020 Innsbruck, Austria.

Physical Review Letters
|June 4, 2008
PubMed
Summary
This summary is machine-generated.

Researchers propose observing time-dependent Andreev-like reflections in cold atoms within a 1D optical lattice. This study analyzes wave packet dynamics, showing correspondence with Luttinger liquid models for Bose-Hubbard systems.

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Last Updated: Jul 4, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
11:21

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Published on: March 30, 2017

Gradient Echo Quantum Memory in Warm Atomic Vapor
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Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
08:53

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Published on: October 9, 2012

Area of Science:

  • Quantum physics
  • Atomic physics
  • Condensed matter physics

Background:

  • One-dimensional (1D) transport systems theoretically predict Andreev-like reflections.
  • Observing these phenomena dynamically in experiments remains challenging.

Purpose of the Study:

  • To propose and analyze a novel experimental setup for observing time-dependent Andreev-like reflections.
  • To investigate the dynamics of density excitations in a 1D optical lattice system.

Main Methods:

  • Utilizing cold atoms confined in a 1D optical lattice.
  • Employing time-dependent density matrix renormalization group (TD-DMRG) methods.
  • Analyzing wave packet dynamics across a boundary in interaction strength.

Main Results:

  • The proposed setup allows for time-dependent observation of Andreev-like reflections.
  • Simulations show good correspondence between observed phenomena and Luttinger liquid model predictions.
  • Density excitation propagation across interaction boundaries was successfully analyzed.

Conclusions:

  • The study provides a viable experimental pathway for observing predicted quantum phenomena.
  • The findings bridge theoretical predictions from Luttinger liquid models with experimental possibilities in cold atom systems.
  • This work is relevant for current experiments involving the Bose-Hubbard model.