Ultrafast Spin-Motion Entanglement and Interferometry with a Single Atom

被引：74

作者：

Mizrahi, J. ^{[1
,2
]}

Senko, C. ^{[1
,2
]}

Neyenhuis, B. ^{[1
,2
]}

Johnson, K. G. ^{[1
,2
]}

Campbell, W. C. ^{[3
]}

Conover, C. W. S. ^{[4
]}

Monroe, C. ^{[1
,2
]}

机构：

[1] Univ Maryland, Dept Phys, Joint Quantum Inst, College Pk, MD 20742 USA

[2] NIST, College Pk, MD 20742 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Colby Coll, Dept Phys, Waterville, ME 04901 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 20期

基金：

美国国家科学基金会;

关键词：

TRAPPED IONS; QUANTUM SIMULATOR; STATES; GATES;

D O I：

10.1103/PhysRevLett.110.203001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report entanglement of a single atom's hyperfine spin state with its motional state in a time scale of less than 3 ns. We engineer a short train of intense laser pulses to impart a spin-dependent momentum transfer of +/- 2hk. Using pairs of momentum kicks, we create an atomic interferometer and demonstrate collapse and revival of spin coherence as the motional wave packet is split and recombined. The revival after a pair of kicks occurs only when the second kick is delayed by an integer multiple of the harmonic trap period, a signature of entanglement and disentanglement of the spin with the motion. Such quantum control opens a new regime of ultrafast entanglement in atomic qubits.

引用

页数：5

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