Critical velocity in the BEC-BCS crossover

Physical Review Letters
Wolf WeimerHenning Moritz

Abstract

We map out the critical velocity in the crossover from Bose-Einstein condensation to Bardeen-Cooper-Schrieffer superfluidity with ultracold ^{6}Li gases. A small attractive potential is dragged along lines of constant column density. The rate of the induced heating increases steeply above a critical velocity v_{c}. In the same samples, we measure the speed of sound v_{s} by exciting density waves and compare the results to the measured values of v_{c}. We perform numerical simulations in the Bose-Einstein condensation regime and find very good agreement, validating the approach. In the strongly correlated regime our measurements of v_{c} provide a testing ground for theoretical approaches.

References

Sep 8, 2000·Physical Review Letters·R OnofrioW Ketterle
Jun 1, 2004·Physical Review Letters·L D CarrY Castin
Dec 17, 2004·Physical Review Letters·G E AstrakharchikAnd S Giorgini
Jun 24, 2005·Nature·M W ZwierleinW Ketterle
Apr 12, 2006·Physical Review Letters·Rajdeep SensarmaTin-Lun Ho
Oct 13, 2007·Physical Review Letters·D E MillerW Ketterle
Nov 3, 2007·Optics Letters·G ReinaudiD Guéry-Odelin
Jun 4, 2008·Physical Review Letters·J Carlson, Sanjay Reddy
Oct 15, 2008·Physical Review Letters·André SchirotzekWolfgang Ketterle
Jan 23, 2010·Science·Munekazu HorikoshiTakashi Mukaiyama
Jan 15, 2011·Physical Review Letters·G BertainaS Stringari
Apr 27, 2011·Physical Review Letters·A RamanathanG K Campbell
May 17, 2013·Nature·Leonid A SidorenkovSandro Stringari
Jul 19, 2014·Science·I Ferrier-BarbutC Salomon

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Citations

Jan 15, 2016·Physical Review Letters·Marion DelehayeChristophe Salomon
Jul 28, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Sebastian KrinnerJean-Philippe Brantut
Feb 27, 2018·Physical Review Letters·Klaus HueckHenning Moritz
Aug 8, 2018·Physical Review Letters·Matthias WenzelIgor Ferrier-Barbut
Oct 4, 2018·The Review of Scientific Instruments·Benjamin GängerArtur Widera
May 2, 2020·Physical Review Letters·C C N KuhnC J Vale
Dec 19, 2015·Science·Giacomo ValtolinaGiacomo Roati
Apr 26, 2017·Optics Express·Klaus HueckCheng Chin
Dec 15, 2018·Physical Review Letters·Jee Woo ParkY Shin
Feb 6, 2017·The Review of Scientific Instruments·Klaus HueckHenning Moritz
Feb 25, 2017·Physical Review Letters·P ZhengH B Chan

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