Proposal for Interferometric Detection of the Topological Character of Modulated Superfluidity in Ultracold Fermi Gases

Abstract

A system with unequal populations of up and down fermions may exhibit a LarkinOvchinnikov (LO) phase characterized by periodic domain walls across which the order parameter changes sign and the excess polarization is localized. Despite fifty years of theoretical and experimental work, there has so far been no unambiguous observation of an LO phase. Here we propose an experiment in which two fermion clouds, prepared with unequal population imbalances, are allowed to expand and interfere. We show that a pattern of staggered fringes in the interference is unequivocal evidence of LO physics.

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Document Details

Document Type
Technical Report
Publication Date
Mar 26, 2012
Accession Number
AD1010681

Entities

People

  • Mason Swanson
  • Nandini Trivedi
  • Yen L. Loh

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Amplitude
  • Amplitude Modulation
  • Couplings
  • Critical Temperature
  • Crystal Lattices
  • Detection
  • Domain Walls
  • Electronic Mail
  • Far Field
  • Flight Simulations
  • Geometry
  • Grand Forks
  • Low Temperature
  • Modulation
  • Optical Lattices
  • Simulations
  • Subatomic Particles

Fields of Study

  • Physics

Readers

  • Military History of the United States in the 20th Century.
  • Optical Physics and Photonics.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.