Decoherence-Free Subspaces and Subsystems
Daniel A. Lidar (1), K. Birgitta Whaley (2) ((1) University of, Toronto, (2) University of California, Berkeley)
TL;DR
This paper reviews the theory of decoherence-free subspaces and subsystems, which are crucial for protecting quantum information from environmental noise in quantum computing.
Contribution
It provides a comprehensive overview of the theoretical foundations and practical applications of decoherence-free subspaces and subsystems in quantum information.
Findings
Decoherence-free subspaces can effectively preserve quantum information.
Theoretical frameworks for identifying decoherence-free structures are well-developed.
Applications demonstrate improved quantum information stability.
Abstract
Decoherence is the phenomenon of non-unitary dynamics that arises as a consequence of coupling between a system and its environment. It has important harmful implications for quantum information processing, and various solutions to the problem have been proposed. Here we provide a detailed a review of the theory of decoherence-free subspaces and subsystems, focusing on their usefulness for preservation of quantum information.
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Taxonomy
TopicsQuantum Information and Cryptography · Quantum Computing Algorithms and Architecture · Quantum Mechanics and Applications