Coherence properties and quantum state transportation in an optical conveyor belt

S  Kuhr; W  Alt; D  Schrader; I  Dotsenko; Y  Miroshnychenko; W  Rosenfeld; M  Khudaverdyan; V  Gomer; A  Rauschenbeutel; D  Meschede

doi:10.1103/PhysRevLett.91.213002

Coherence properties and quantum state transportation in an optical conveyor belt

S Kuhr, W Alt, D Schrader, I Dotsenko, Y Miroshnychenko, W Rosenfeld, M Khudaverdyan, V Gomer, A Rauschenbeutel, D Meschede

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Abstract

We have prepared and detected quantum coherences of trapped cesium atoms with long dephasing times. Controlled transport by an "optical conveyor belt" over macroscopic distances preserves the atomic coherence with slight reduction of coherence time. The limiting dephasing effects are experimentally identified, and we present an analytical model of the reversible and irreversible dephasing mechanisms. Our experimental methods are applicable at the single-atom level. Coherent quantum bit operations along with quantum state transport open the route towards a "quantum shift register" of individual neutral atoms.

Original language	English
Article number	213002
Number of pages	4
Journal	Physical Review Letters
Volume	91
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.91.213002
Publication status	Published - 21 Nov 2003

Keywords

coherence properties
quantum state transportation
optical conveyor belt
trapped cesium atoms
quantum coherences
macroscopic distances

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10.1103/PhysRevLett.91.213002

PhysRevLettFinal published version, 416 KB

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title = "Coherence properties and quantum state transportation in an optical conveyor belt",

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AU - Kuhr, S

AU - Alt, W

AU - Schrader, D

AU - Dotsenko, I

AU - Miroshnychenko, Y

AU - Rosenfeld, W

AU - Khudaverdyan, M

AU - Gomer, V

AU - Rauschenbeutel, A

AU - Meschede, D

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AB - We have prepared and detected quantum coherences of trapped cesium atoms with long dephasing times. Controlled transport by an "optical conveyor belt" over macroscopic distances preserves the atomic coherence with slight reduction of coherence time. The limiting dephasing effects are experimentally identified, and we present an analytical model of the reversible and irreversible dephasing mechanisms. Our experimental methods are applicable at the single-atom level. Coherent quantum bit operations along with quantum state transport open the route towards a "quantum shift register" of individual neutral atoms.

KW - coherence properties

KW - quantum state transportation

KW - optical conveyor belt

KW - trapped cesium atoms

KW - quantum coherences

KW - macroscopic distances

U2 - 10.1103/PhysRevLett.91.213002

DO - 10.1103/PhysRevLett.91.213002

M3 - Article

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VL - 91

JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Coherence properties and quantum state transportation in an optical conveyor belt

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Keywords

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