Work

Stationary State Entanglement and Total Correlation of Two Qubits or Qutrits

Year: 2005

Type: article

Abstract: We investigate the mutual information and entanglement of stationary states of two locally driven qubits under the influence of collective dephasing. It is shown that both the mutual information and the entanglement of two qubits in the stationary state exhibit damped oscillation with the scaled action time γT of the local external driving field. It means that we can control both the entanglement and total correlation of the stationary state of two qubits by adjusting the action time of the driving field. We also consider the influence of collective dephasing on the entanglement of two qutrits and obtain the sufficient condition that the stationary state is entangled.

Source: Modern Physics Letters B

DOI: 10.1142/s0217984905009365

Authors: SHANG-BIN LI, JING-BO XU

Institutions: China Center of Advanced Science and Technology, Zhejiang University

Language: English

Topic: Quantum Information and Cryptography

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Natural Science Foundation of China

Award: 光场与物质相互作用及相关问题的研究