Two-photon parametric pumping versus two-photon absorption: A quantum jump approach | Zendy

E. S. Guerra | Zendy; B. M. Garraway | Zendy; P. L. Knight | Zendy

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Two-photon parametric pumping versus two-photon absorption: A quantum jump approach

Author(s) -

E. S. Guerra,

B. M. Garraway,

P. L. Knight

Publication year - 1997

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.55.3842

Subject(s) - physics , photon , atomic physics , excitation , quantum entanglement , hamiltonian (control theory) , parametric statistics , two photon absorption , absorption (acoustics) , optical cavity , cavity quantum electrodynamics , quantum mechanics , field (mathematics) , quantum , optics , laser , open quantum system , mathematical optimization , statistics , mathematics , pure mathematics

We show that it is possible to produce superpositions of distinct coherent states ~even or odd coherent states! in a cavity where the field is pumped by two-photon parametric amplification and simultaneously undergoes two-photon absorption by a beam of three-level atoms that travel through the cavity interacting with the cavity field. Previous studies modeled the absorber with an effective Hamiltonian without involving real atomic excitation or entanglement, a procedure justified only for weak coupling of the two-photon absorbing atoms. We examine the validity of this assumption by modeling the atomic absorber dynamics from the onset. In order to study the system numerically we make use of a Monte Carlo wave-function method in which the two-photon absorbing atoms can interact with the cavity and evolve with large Rabi angles. @S1050-2947~97!01405-4#

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