2-7 June 2019
Simon Fraser University
America/Vancouver timezone
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Spin-dependent superfluidity in ultracold BECs

4 Jun 2019, 09:00
30m
SWH 10081 (Simon Fraser University)

SWH 10081

Simon Fraser University

Invited Speaker / Conférencier(ère) invité(e) Symposia Day - Optical Science T1-5/T1-7 Strong Correlations in Cold atoms (DAMOPC/DCMMP) | Corrélations fortes dans les atomes froids (DPAMPC/DPMCM)

Speaker

Lindsay LeBlanc (University of Alberta)

Description

The exquisite control available in ultracold quantum gas experiments has enabled the emulation of many different quantum systems and allowed us to better understand the many-body states of quantum matter. Using the technique of artificial gauge fields, a spatially- and spin-dependent gauge potential $A_{\sigma}(\vec{r})$ can be engineered in a BEC, in which the kinetic energy is modified from the free-particle value to create spin-dependent artificial magnetic field, $B$. In the limit of strong-enough $B$, vortices should enter the system, but will have opposite circulation for each spin. This raises several questions: Can vortices of opposite rotation be introduced into the same condensate? Is the threshold for vortex nucleation the same as a single-component system? What are the stable spatial configurations of vortices? How do inter-spin interactions affect all of these? This talk will discuss the theoretical simulations of a spin-dependent artificial magnetic field, and discuss our progress towards realizing these gases using ultracold $^{87}$Rb atoms in our laboratory.

Primary author

Lindsay LeBlanc (University of Alberta)

Co-authors

Logan Cooke (University of Alberta) Benjamin Smith (University of Alberta) Taras Hrushevskyi (University of Alberta)

Presentation Materials

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