Deterministic cavity quantum electrodynamics with trapped ions

Keller, M., Lange, B., Lange, W. and Walther, H. (2003) Deterministic cavity quantum electrodynamics with trapped ions. Journal of Physics B: Atomic, Molecular and Optical Physics, 36 (3). pp. 613-622. ISSN 0953-4075

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We have employed radio-frequency trapping to localize a single 40Ca+-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 (λ = 397 nm). 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 D3/2–P1/2 transition of 40Ca+ (λ = 866 nm). Applications include the controlled generation of single-photon pulses with high efficiency and two-ion quantum gates.

Item Type: Article
Keywords: Deterministic cavity; quantum electrodynamics; trapped ions
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Gemma Farrell
Date Deposited: 14 Mar 2008
Last Modified: 07 Mar 2017 14:36
Google Scholar:21 Citations

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