Vacuum Rabi oscillation
A vacuum Rabi oscillation is a damped oscillation of an initially excited atom coupled to an electromagnetic resonator or cavity in which the atom alternately emits photon(s) into a single-mode electromagnetic cavity and reabsorbs them. The atom interacts with a single-mode field confined to a limited volume V in an optical cavity.  Spontaneous emission results as a consequence of coupling between the atom and the vacuum fluctuations of the cavity field. The vacuum Rabi frequency is given by
where is the location of the atom, for plane-wave fields, is the field polarization, is the electric field per photon, and is the dipole matrix element.
References and notes
- Hiroyuki Yokoyama & Ujihara K (1995). Spontaneous emission and laser oscillation in microcavities. Boca Raton: CRC Press. p. 6. ISBN 0-8493-3786-0.
- Kerry Vahala (2004). Optical microcavities. Singapore: World Scientific. p. 368. ISBN 981-238-775-7.
- Rodney Loudon (2000). The quantum theory of light. Oxford UK: Oxford University Press. p. 172. ISBN 0-19-850177-3.
- Jaynes-Cummings model
- Quantum fluctuation
- Rabi frequency
- Rabi cycle
- Rabi problem
- Spontaneous emission
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