Complete disentanglement by partial pure dephasing

2005/07/31 by Katarzyna Roszak, Pawel Machnikowski, Paweł Machnikowski · 1 citation
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physreva.73.022313

published as PhysRevA 73, 022313 (2006) · Final, considerably extended version, 6 pages, 4 figures

openalex publication_date 2006/02/06 · arxiv created 2006/07/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the effect of pure dephasing on the entanglement of a pair of two-level subsystems (qubits). We show that partial dephasing induced by a super-Ohmic reservoir, corresponding to well-established properties of confined charge states and phonons in semiconductors, may lead to complete disentanglement. We show also that the disentanglement effect increases with growing distance between the two subsystems.

Citations

• Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Optimal strategy for a single-qubit gate and the trade-off between opposite types of decoherence
• Finite-Time Disentanglement Via Spontaneous Emission
• Separability Criterion for Density Matrices
• Discussion of Probability Relations between Separated Systems
• Entanglement of a Pair of Quantum Bits
• On the Einstein Podolsky Rosen paradox

Cited by

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