M Keller et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 613 doi:10.1088/0953-4075/36/3/318
Deterministic cavity quantum electrodynamics with trapped ions
M Keller1, B Lange1, K Hayasaka2, W Lange1 and H Walther1
Show affiliationsWe 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.
- PACS
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42.50.Pq Cavity quantum electrodynamics; micromasers
32.50.+d Fluorescence, phosphorescence (including quenching)
- Subjects
- Dates
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Issue 3 (14 February 2003)
Received 11 October 2002
Published 27 January 2003
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Deterministic cavity quantum electrodynamics with trapped ions
M Keller et al 2003 J. Phys. B: At. Mol. Opt. Phys. 36 613
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