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Journal of Hengyang Normal University

Preparation of the Pure Fock States via Single-Mode Cavity Field Resonant Interaction with Two-level Atom

Liu Zong-Liang

Published Jan 1, 2002• 1 citation
OpenAlex

Abstract

Based on the two-p hoton resonant of two-level atom and single mode cavity field,respectively one schemes for the preparation of the pure Fock states are presented.

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Communications in Theoretical Physics•May 1, 2009•0 citations
A single two-level atom can be used to prepare an arbitrary photon number state (Fock state) in a high Q cavity . The atom undergoes a controlled succession of interactions with two cavity modes. One of them contains a coherent field. The atom transfers photons one by one from this field to the initially empty second mode. The scheme can be extended to prepare a quantum superposition of the vacuum with a Fock state, a highly non-classical situation. We discuss the feasibility of the experiment with our present Rydberg-atom cavity QED set-up.
An alternative scheme is proposed to transfer quantum states and prepare a quantum network in cavity QED. It is based on the interaction of a two-mode cavity field with a three-level ∨-type atom. In the scheme, the atom-cavity field interaction is resonant, thus the time required to complete the quantum state transfer process is greatly shortened, which is very important in view of decoherence. Moreover, the present scheme does not require one mode of the cavities to be initially prepared in one-photon state, thus it is more experimentally feasible than the previous ones.