Entanglement Evolution of a Two-Qubit System beyond Rotating-Wave Approximation

2008/12/11 by Yang Qing, Qing Yang, Yang Ming +4 · 9 citations
Computer Science · Physics and Astronomy · #Amplitude damping channel #Mechanical and Optical Resonators #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum discord #Quantum entanglement #Squashed entanglement #Sudden death #Time evolution #quant-ph

paper · pdf · doi:10.1088/0256-307x/26/4/040302

published in Chinese Physics Letters 26(4), 040302 (Institute of Physics) · 4 pages, 6 figures

arxiv created 2008/12/11 · openalex publication_date 2009/03/31 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Two noninteracting qubits, initially entangled in Bell states, are coupled to a one-mode cavity and evolve under its influence. The entanglement evolution of the two qubits is investigated beyond the rotating-wave approximation. It is shown that the counter-rotating wave terms have a great influence on the disentanglement behavior.

Citations

• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Sudden death and long-lived entanglement of two trapped ions
• Finite-Time Disentanglement Via Spontaneous Emission
• Quantum error correction may delay, but also cause, entanglement sudden death
• Conditional Quantum Dynamics and Logic Gates
• Complete disentanglement by partial pure dephasing
• Sudden Birth versus Sudden Death of Entanglement in Multipartite Systems
• Dark periods and revivals of entanglement in a two-qubit system