Decoherence-free subspace and disentanglement dynamics for two qubits in a common non-Markovian squeezed reservoir

2010/07/22 by Md. Manirul Ali, Po‐Wen Chen, Po-Wen Chen +2 · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Markov process #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum decoherence #Quantum entanglement #Quantum mechanics #Qubit #Statistical physics #cond-mat.stat-mech #quant-ph

paper · pdf · doi:10.1103/physreva.82.022103

published as Phys. Rev. A 82, 022103 (2010) · To appear in Phys. Rev. A (8 pages)

arxiv created 2010/07/22 · openalex publication_date 2010/08/11 · arxiv updated 2015/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study the non-Markovian entanglement dynamics of two qubits in a common squeezed bath. We see a remarkable difference between the non-Markovian entanglement dynamics and its Markovian counterpart. We show that a non-Markovian decoherence-free state is also decoherence free in the Markovian regime, but all the Markovian decoherence-free states are not necessarily decoherence free in the non-Markovian domain. We extend our calculation from a squeezed vacuum bath to a squeezed thermal bath, where we see the effect of finite bath temperatures on the entanglement dynamics.

Citations

• Non-Markovian entanglement dynamics between two coupled qubits in the same environment
• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
• Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Finite-Time Disentanglement Via Spontaneous Emission
• A two-level atom coupled to a controllable squeezed vacuum field reservoir
• Entanglement oscillations in non-Markovian quantum channels
• Practical quantum cryptography based on two-photon interferometry
• Charge qubit dynamics in a double quantum dot coupled to phonons
• Cavity-loss-induced generation of entangled atoms
• Sudden Death of Entanglement
• Decoherence, einselection, and the quantum origins of the classical
• On the Einstein Podolsky Rosen paradox
• Experimental entanglement of six photons in graph states
• Quantum computers and dissipation

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