Title

"Macroscopic'' quantum superpositions: Atom-field entangled and steady states by two-photon processes

Authors

Authors

M. Alexanian;S. K. Bose

Comments

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Abbreviated Journal Title

Phys. Rev. A

Keywords

JAYNES-CUMMINGS MODEL; SCHRODINGER-CAT STATES; 2-PHOTON MICROMASER; GENERATION; COLLAPSE; REVIVAL; APPARATUS; EXAMPLE; CAVITY; VECTOR; Optics; Physics, Atomic, Molecular & Chemical

Abstract

The dynamics of an exact two-photon Hamiltonian is used to study the time evolution of an initially disentangled pure state of the atom-field system as it goes through cycles of entanglement separated by instances of disentanglement. For specific initial states of the electromagnetic field, the output state is a pure quantum superposition of a squeezed vacuum state and an orthogonal, odd-photon-number state. The odd-photon-number state, which is not a squeezed state, exhibits both nonclassical sub-Poissonian and classical super-Poissonian photon statistics. In the latter case the quantum superposition resembles a macroscopic superposition state. Conditions are obtained on the atom-cavity interaction time for such states to represent the steady states in the injection in a high-Q cavity of a monoenergetic, low-density beam of three-level atoms in a coherent state.

Journal Title

Physical Review A

Volume

65

Issue/Number

3

Publication Date

1-1-2002

Document Type

Article

Language

English

First Page

6

WOS Identifier

WOS:000174548600073

ISSN

1050-2947

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