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Superflow in a toro...
Superflow in a toroidal bose-einstein condensate : an atom circuit with a tunable weak link
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- Ramanathan, A. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Wright, K.C. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Muniz, S.R. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States; Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, 13560-970, Brazil
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- Zelan, Martin, 1981- (författare)
- Umeå universitet,Institutionen för fysik,Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Hill, W.T. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Lobb, C.J. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Helmerson, K. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States; School of Physics, Monash University, VIC 3800, Australia
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- Phillips, W.D. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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- Campbell, G.K. (författare)
- Joint Quantum Institute, National Institute of Standards and Technology, University of Maryland, Gaithersburg, MD 20899, United States
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(creator_code:org_t)
- American Physical Society, 2011
- 2011
- Engelska.
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Ingår i: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 106:13
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have created a long-lived (∼40s) persistent current in a toroidal Bose-Einstein condensate held in an all-optical trap. A repulsive optical barrier across one side of the torus creates a tunable weak link in the condensate circuit, which can affect the current around the loop. Superflow stops abruptly at a barrier strength such that the local flow velocity at the barrier exceeds a critical velocity. The measured critical velocity is consistent with dissipation due to the creation of vortex-antivortex pairs. This system is the first realization of an elementary closed-loop atom circuit.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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Ramanathan, A.
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Wright, K.C.
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Muniz, S.R.
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Zelan, Martin, 1 ...
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Hill, W.T.
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Lobb, C.J.
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visa fler...
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Helmerson, K.
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Phillips, W.D.
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Campbell, G.K.
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visa färre...
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