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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2008, Volume 88, Issue 8, Pages 572–576
(Mi jetpl253)
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ATOMS, SPECTRA, RADIATIONS
Natural line shape
P. V. Elyutin Department of Physics, Moscow State University, Moscow, 119991, Russia
Abstract:
The observable line shape of the spontaneous emission depends on the procedure of atom's excitation. The spectrum of radiation emitted by a two-level atom excited from the ground state by a pi pulse of the resonant pump field is calculated for the case when the Rabi frequency is much larger than the relaxation rate. It is shown that the central part of the spectral distribution has a standard Lorentzian form, whereas for detunings from the resonance that are larger than the Rabi frequency the spectral density falls off faster. The shape of the wings of the spectral line is sensitive to the form of the pi pulse. The implications for the quantum Zeno effect theory and for the estimates of the duration of quantum jumps are discussed.
Received: 04.09.2008
Citation:
P. V. Elyutin, “Natural line shape”, Pis'ma v Zh. Èksper. Teoret. Fiz., 88:8 (2008), 572–576; JETP Letters, 88:8 (2008), 496–500
Linking options:
https://www.mathnet.ru/eng/jetpl253 https://www.mathnet.ru/eng/jetpl/v88/i8/p572
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