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High-Fidelity Polarization Storage in a Gigahertz Bandwidth Quantum Memory

Abstract:

We demonstrate a dual-rail optical Raman memory inside a polarization interferometer; this enables us to store polarization-encoded information at GHz bandwidths in a room-temperature atomic ensemble. By performing full process tomography on the system we measure up to 97\pm1% process fidelity for the storage and retrieval process. At longer storage times, the process fidelity remains high, despite a loss of efficiency. The fidelity is 86\pm4% for 1.5 \mu s storage time, which is 5,000 times ...

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Publication status:
Published

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Authors


England, DG More by this author
Michelberger, PS More by this author
Champion, TFM More by this author
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Journal:
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume:
45
Issue:
12
Pages:
124008-124008
Publication date:
2011-12-05
DOI:
EISSN:
1361-6455
ISSN:
0953-4075
URN:
uuid:6d88be5a-fe5d-4184-9c2c-7f6766d787df
Source identifiers:
213621
Local pid:
pubs:213621
Language:
English
Keywords:

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