Non-Markovian environments and entanglement preservation

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.062119· OSTI ID:21407901

Tan, Jackson; Kyaw, Thi Ha; Yeo, Ye ^[1]

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1. Department of Physics, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 (Singapore)

Using the Shabani-Lidar post-Markovian master equation, we derive non-Markovian generalizations of important quantum decohering operations on single qubits. When environmental memory effects are being taken into account, both single-qubit coherence and two-qubit entanglement may be preserved over a longer period of time, in contrast to the corresponding situations where these are totally neglected. We argue that recognizing the fact that every environment is inherently non-Markovian could be the key to the resolution of the issue of entanglement sudden death.

• OSTI ID: 21407901
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
EQUATIONS
INFORMATION
MARKOV PROCESS
MEASURING INSTRUMENTS
OPTICAL RADAR
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
QUBITS
RADAR
RANGE FINDERS
RESOLUTION
STOCHASTIC PROCESSES