Deterministic cavity quantum electrodynamics with trapped ions

Keller, M, Lange, B, Hayasaka, K, Lange, W and Walther, H (2003) Deterministic cavity quantum electrodynamics with trapped ions. Journal of Physics B, 36. pp. 613-622. ISSN 0953-4075

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We have employed radio-frequency trapping to localize a single calcium-40 ion in a high-finesse optical cavity. By means of laser Doppler cooling, the position spread of the ion's wavefunction along the cavity axis was reduced to 42 nm, a fraction of the resonance wavelength of ionized calcium (=397nm). By controlling the position of the ion in the optical field, continuous and completely deterministic coupling of ion and field was realized. The precise three-dimensional location of the ion in the cavity was measured by observing the fluorescent light emitted upon excitation in the cavity field. The single-ion system is ideally suited to implement cavity quantum electrodynamics under cw conditions. To this end we operate the cavity on the D_3/2 - P_1/2 transition of calcium-40 (=866nm). Applications include the controlled generation of single-photon pulses with high efficiency and two-ion quantum gates.

Item Type: Article
Additional Information: The paper demonstrates deterministic coupling of ions and photons. As principal scientist M.K. performed the largest share of experimental work and built important parts of the setup. W.L. was the leader of the team. The remaining authors' contributions were limited to the laser system (K.H., B.L.) and funding (H.W).
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Matthias Keller
Date Deposited: 06 Feb 2012 20:21
Last Modified: 30 Mar 2012 13:43
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