Measuring the Superfluid Fraction of an Ultracold Atomic Gas

2009/10/26 by Nigel R. Cooper, Zoran Hadzibabic · 69 citations
Physics and Astronomy · #Advanced Frequency and Time Standards #Angular momentum #Atomic and Subatomic Physics Research #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Fraction (chemistry) #Measure (data warehouse) #Physics #Quantum mechanics #Rotation (mathematics) #Superfluidity #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.104.030401

published in Physical Review Letters 104(3), 030401 (American Physical Society) · 4 pages, 2 figures

arxiv created 2009/10/26 · openalex publication_date 2010/01/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose a method to measure the superfluid fraction of an atomic gas. The method involves the use of a vector potential generated by optical beams with nonzero angular momenta to simulate uniform rotation. The induced change in angular momentum of the atomic gas can be measured spectroscopically. This allows a direct determination of the superfluid fraction.

Citations

• Many-body physics with ultracold gases
• Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor
• Vortex Formation in a Stirred Bose-Einstein Condensate
• Superfluidity

Cited by

• Abnormal Superfluid Fraction of Harmonically Trapped Few-Fermion Systems
• Superfluid Density of an Open Dissipative Condensate
• Spectroscopic method to measure the superfluid fraction of an ultracold atomic gas