Dynamics of low-density ultracold Rydberg gases

被引：35

作者：

Day, J. O. ^{[1
]}

Brekke, E. ^{[1
]}

Walker, T. G. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW A | 2008年 / 77卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.77.052712

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Population dynamics in weakly excited clouds of ultracold Rb-87 Rydberg atoms were studied by means of trap loss, fluorescence detection, and state-dependent stimulated emission. Rydberg atoms were excited to various nl Rydberg states via continuous two-photon excitation from a magneto-optical trap. A stimulated emission probe laser was then used to bring the Rydberg atoms down to the 6P(3/2) state, allowing state-dependent detection of the Rydberg atoms. Measurements of trap loss and fluorescent emission reveal information about the evolution of the Rydberg populations. In particular, population in the initial Rydberg state quickly transfers to other Rydberg states by a noncollisional mechanism, likely superradiant emission. The trap-loss measurements are consistent with black-body ionization as the dominant loss mechanism.

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页数：9

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共 40 条

[1] Resonant electric dipole-dipole interactions between cold Rydberg atoms in a magnetic field [J].

Afrousheh, K. ;

Bohlouli-Zanjani, P. ;

Carter, J. D. ;

Mugford, A. ;

Martin, J. D. D. .

PHYSICAL REVIEW A, 2006, 73 (06)

[2] Spectroscopic observation of resonant electric dipole-dipole interactions between cold Rydberg atoms [J].

Afrousheh, K ;

Bohlouli-Zanjani, P ;

Vagale, D ;

Mugford, A ;

Fedorov, M ;

Martin, JDD .

PHYSICAL REVIEW LETTERS, 2004, 93 (23) :233001-1

[3] Mechanical effect of van der Waals interactions observed in real time in an ultracold Rydberg gas [J].

Amthor, T. ;

Reetz-Lamour, M. ;

Westermann, S. ;

Denskat, J. ;

Weidemueller, M. .

PHYSICAL REVIEW LETTERS, 2007, 98 (02)

[4] Resonant dipole-dipole energy transfer in a nearly frozen Rydberg gas [J].

Anderson, WR ;

Veale, JR ;

Gallagher, TF .

PHYSICAL REVIEW LETTERS, 1998, 80 (02) :249-252

[5] Ionization of sodium and rubidium nS, nP, and nD Rydberg atoms by blackbody radiation [J].

Beterov, I. I. ;

Tretyakov, D. B. ;

Ryabtsev, I. I. ;

Ekers, A. ;

Bezuglov, N. N. .

PHYSICAL REVIEW A, 2007, 75 (05)

[6] Enhancement of Rydberg atom interactions using ac Stark shifts [J].

Bohlouli-Zanjani, P. ;

Petrus, J. A. ;

Martin, J. D. D. .

PHYSICAL REVIEW LETTERS, 2007, 98 (20)

[7] Quantum computing with collective ensembles of multilevel systems [J].

Brion, E. ;

Molmer, K. ;

Saffman, M. .

PHYSICAL REVIEW LETTERS, 2007, 99 (26)

[8] Many-body interactions in a sample of ultracold Rydberg atoms with varying dimensions and densities [J].

Carroll, TJ ;

Sunder, S ;

Noel, MW .

PHYSICAL REVIEW A, 2006, 73 (03)

[9] COHERENCE IN SPONTANEOUS RADIATION PROCESSES [J].

DICKE, RH .

PHYSICAL REVIEW, 1954, 93 (01) :99-110

[10] High-angular-momentum states in cold Rydberg gases [J].

Dutta, SK ;

Feldbaum, D ;

Walz-Flannigan, A ;

Guest, JR ;

Raithel, G .

PHYSICAL REVIEW LETTERS, 2001, 86 (18) :3993-3996

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