Initial Decoherence of Open Quantum Systems

Abstract

We present a new short-time approximation scheme for evaluation of decoherence. At low temperatures, the approximation is argued to apply at intermediate times as well. It then provides a tractable approach complementary to Markovian-type approximations, and is appropriate for evaluation of deviations from pure states in quantum computing models.

24 pages in plain TeX

References in corpus (2)

• Indirect Interaction of Solid-State Qubits via Two-Dimensional Electron Gas
• Fast Incomplete Decoherence of Nuclear Spins in Quantum Hall Ferromagnet

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