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arXiv · 1207.1538

Dynamically stabilized decoherence-free states in non-Markovian open fermionic systems

Heng-Na Xiong·Wei-Min Zhang·Matisse Wei-Yuan Tu·Daniel Braun
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Abstract

Decoherence-free subspaces (DFSs) provide a strategy for protecting the dynamics of an open system from decoherence induced by the system-environment interaction. So far, DFSs have been primarily studied in the framework of Markovian master equations. In this work, we study decoherence-free (DF) states in the general setting of a non-Markovian fermionic environment. We identify the DF states by diagonalizing the non-unitary evolution operator for a two-level fermionic system attached to an electron reservoir. By solving the exact master equation, we show that DF states can be stabilized dynamically.

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Heng-Na Xiong, Wei-Min Zhang, Matisse Wei-Yuan Tu, Daniel Braun. 2012-07-06. Dynamically stabilized decoherence-free states in non-Markovian open fermionic systems. https://doi.org/10.1103/physreva.86.032107

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