Experimental realization of quantum-resonance ratchets at arbitrary quasimomenta

I. Dana; V. Ramareddy; I. Talukdar; G. S. Summy

doi:10.1103/PhysRevLett.100.024103

Experimental realization of quantum-resonance ratchets at arbitrary quasimomenta

I. Dana, V. Ramareddy, I. Talukdar, G. S. Summy

Department of Physics - at Bar-Ilan University

Oklahoma State University

Research output: Contribution to journal › Article › peer-review

121 Scopus citations

Abstract

Quantum-resonance ratchets associated with the kicked particle are experimentally realized for arbitrary quasimomentum using a Bose-Einstein condensate (BEC) exposed to a pulsed standing light wave. The ratchet effect for general quasimomentum arises even though both the standing-wave potential and the initial state of the BEC have a point symmetry. The experimental results agree well with theoretical ones which take into account the finite quasimomentum width of the BEC. In particular, this width is shown to cause a suppression of the ratchet acceleration for exactly resonant quasimomentum, leading to a saturation of the directed current.

Original language	English
Article number	024103
Journal	Physical Review Letters
Volume	100
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.100.024103
State	Published - 18 Jan 2008

Access to Document

10.1103/PhysRevLett.100.024103

Cite this

@article{d714346692984d0c84bf611c603dcfa1,

title = "Experimental realization of quantum-resonance ratchets at arbitrary quasimomenta",

abstract = "Quantum-resonance ratchets associated with the kicked particle are experimentally realized for arbitrary quasimomentum using a Bose-Einstein condensate (BEC) exposed to a pulsed standing light wave. The ratchet effect for general quasimomentum arises even though both the standing-wave potential and the initial state of the BEC have a point symmetry. The experimental results agree well with theoretical ones which take into account the finite quasimomentum width of the BEC. In particular, this width is shown to cause a suppression of the ratchet acceleration for exactly resonant quasimomentum, leading to a saturation of the directed current.",

author = "I. Dana and V. Ramareddy and I. Talukdar and Summy, {G. S.}",

year = "2008",

month = jan,

day = "18",

doi = "10.1103/PhysRevLett.100.024103",

language = "אנגלית",

volume = "100",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Experimental realization of quantum-resonance ratchets at arbitrary quasimomenta

AU - Dana, I.

AU - Ramareddy, V.

AU - Talukdar, I.

AU - Summy, G. S.

PY - 2008/1/18

Y1 - 2008/1/18

N2 - Quantum-resonance ratchets associated with the kicked particle are experimentally realized for arbitrary quasimomentum using a Bose-Einstein condensate (BEC) exposed to a pulsed standing light wave. The ratchet effect for general quasimomentum arises even though both the standing-wave potential and the initial state of the BEC have a point symmetry. The experimental results agree well with theoretical ones which take into account the finite quasimomentum width of the BEC. In particular, this width is shown to cause a suppression of the ratchet acceleration for exactly resonant quasimomentum, leading to a saturation of the directed current.

AB - Quantum-resonance ratchets associated with the kicked particle are experimentally realized for arbitrary quasimomentum using a Bose-Einstein condensate (BEC) exposed to a pulsed standing light wave. The ratchet effect for general quasimomentum arises even though both the standing-wave potential and the initial state of the BEC have a point symmetry. The experimental results agree well with theoretical ones which take into account the finite quasimomentum width of the BEC. In particular, this width is shown to cause a suppression of the ratchet acceleration for exactly resonant quasimomentum, leading to a saturation of the directed current.

UR - http://www.scopus.com/inward/record.url?scp=38349088654&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.024103

DO - 10.1103/PhysRevLett.100.024103

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

C2 - 18232872

AN - SCOPUS:38349088654

SN - 0031-9007

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 024103

ER -

Experimental realization of quantum-resonance ratchets at arbitrary quasimomenta

Abstract

Access to Document

Other files and links

Fingerprint

Cite this