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Long-lived mesoscopic entanglement outside the Lamb-Dicke regime.

Abstract:
We create entangled states of the spin and motion of a single 40Ca+ ion in a linear ion trap. We theoretically study and experimentally observe the behavior outside the Lamb-Dicke regime, where the trajectory in phase space is modified and the motional coherent states become squeezed. We directly observe the modification of the return time of the trajectory, and infer the squeezing. The mesoscopic entanglement is observed up to Deltaalpha=5.1 with coherence time 170 micros and mean phonon excitation n = 16.
Publication status:
Published

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Authors


McDonnell, MJ More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Atomic and Laser Physics
Keitch, BC More by this author
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Journal:
Physical review letters
Volume:
98
Issue:
6
Pages:
063603
Publication date:
2007-02-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:e3bb4b31-c31c-456e-b4a2-421a7b37b482
Source identifiers:
22669
Local pid:
pubs:22669
Language:
English

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