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Acta Sinica Quantum Optica

Fidelity of a Pair of Two-level Atoms in the Raman Interaction of Atoms with a Thermal Radiation Field by Atoms' Dipole-dipole Interaction

Kaiming You

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir.A pair of two-level atoms' reducible density rectangular array is obtained when the Raman interaction of atoms with a thermal radiation field atoms by dipole-dipole interaction is put in a thermal reservoir.The paper has studied the fidelity of two-level atoms which are put in the strongly thermal radiation field.The properties of fidelity are discussed.It is shown that the two two-level atoms initially situated in different coherent superposition states,quantum information fidelities have obvious differences.

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The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir.A pair of two-level atoms' reducible density rectangular array is obtained when the Raman interaction of atoms with a thermal radiation field atoms by dipole-dipole interaction is put in a thermal reservoir.The paper has studied the fidelity of two-level atoms which are put in the strongly thermal radiation field.The properties of fidelity are discussed.It is shown that the two two-level atoms initially situated in different coherent superposition states,quantum information fidelities have obvious differences.
A model is built when the two two-level atoms is in thermal radiation field environment.By means of the density rectangular method,two two-level atoms'reducible density rectangular array is obtained when atoms by dipole-dipole interaction are put in a thermal reservoir.The problem of fidelity of two-level atoms is studied which are put in the strongly thermal radiation field.It is shown that the two two-level atoms initially situated in different coherent superposition states,quantum information may lose fidelities partly or may not lose fidelities during evolution in transmit process.The initial states may influence the losing fidelities speed obviously.
The two-level atom is described by Pauli sign and the environment is described by infinite harmonic particle thermal reservoir. We have studied the problem of fidelity of quantum states of two-level atoms located in strongly thermal radiation field. The two-level atoms' reducible density rectangular array is obtained. We discuss the properties of fidelity. It is shown that for the two two-level atoms initially situated in different coherent superposition states, quantum information may partly lose fidelity or may not lose fidelity during evolution in transmission process.
The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir.We have studied the entanglement of two-level atoms which are put in the strongly thermal radiation field.The two-level atoms' reducible density rectangular array is obtained.We discuss the properties of entanglement by virtue of concurrence.It is shown that the two two-level atoms initially situated in different coherent superposition states,entanglement of atoms have obvious dissimilarity.
The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir.We have studied the entanglement of the coupling two-level atoms which are put in the thermal radiation field.The two-level atoms′ reducible density rectangular array is obtained.We discuss the properties of entanglement by virtue of concurrence.It is shown that as the two two-level atoms are initially situated in different coherent superposition states,entanglement of atoms have obvious dissimilarity.