Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.230402
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Funding
- Australian Research Council through the ARC center of Excellence for Quantum-Atom Optics
- U.S. Department of Energy
- [DP1094025]
- Australian Research Council [DP1094025] Funding Source: Australian Research Council
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The miscibility-immiscibility phase transition in binary Bose-Einstein condensates (BECs) can be controlled by a coupling between the two components. Here we propose a new scheme that uses coupling-induced pattern formation to test the Kibble-Zurek mechanism (KZM) of topological-defect formation in a quantum phase transition. For a binary BEC in a ring trap we find that the number of domains forming the pattern scales as a function of the coupling quench rate with an exponent as predicted by the KZM. For a binary BEC in an elongated harmonic trap we find a different scaling law due to the transition being spatially inhomogeneous. We perform a quantum simulation of the harmonically trapped system in a ring trap to verify the scaling exponent.
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