Stable long-term coupling of a single ion to a cavity mode

Keller, M, Lange, B, Hayasaka, K, Lange, W and Walther, H (2007) Stable long-term coupling of a single ion to a cavity mode. Journal of Modern Optics, 54 (11). pp. 1607-1617. ISSN 0950-0340

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With a single trapped calcium ion, strongly localized in an optical resonator, we have realized a cavity-QED system operating under continuous coupling conditions. Ion and field interact via cavity-assisted Raman pulses, applied between the S_1/2 ground state and the metastable D_3/2 state. We have studied the long-term stability of this interaction at the single-photon level by monitoring the emission from the cavity output and analysing its fluctuations on time-scales up to 10^3 s. The small Allan variances we find confirm that ion and cavity mode are continuously coupled in a deterministically controlled way. Applications include the generation of single photons on demand and an atom-photon interface for optical quantum networks.

Item Type: Article
Additional Information: The paper demonstrates single-photon production under stable conditions over very long times. M.K. was the principal scientist performing the major parts of laboratory work, including design and construction of essential equipment .W.L. was the team leader. The remaining authors contributed to the laser system (K.H., B.L.) and financial support (H.W).
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Matthias Keller
Date Deposited: 06 Feb 2012 20:24
Last Modified: 02 Apr 2012 08:26
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