Coupling a single atomic quantum bit to a high finesse optical cavity

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  • 8 March 2002
Abstract
The quadrupole S$_{1/2}$ - D$_{5/2}$ optical transition of a single trapped Ca$^+$ ion and its vibrational sidebands are coupled to the standing wave field of a high finesse cavity. The coupling is verified by observing the ion's response to both spatial and temporal variations of the intracavity field. The coupling of a trapped ion's qubit transition and its vibrational state to the cavity field is a key step towards realization of the atom-photon interface in quantum computing and communication schemes with trapped ions.

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