Improved coherence time of a non-Hermitian qubit in a -symmetric Environment
arXiv:2511.09990 · doi:10.1016/j.aop.2025.170298
Abstract
Quantum computing's potential for exponential speedup is fundamentally limited by decoherence, a phenomenon arising from environmental interactions. Non-Hermitian quantum mechanics, particularly -symmetric systems, offers a novel framework for extending coherence times. This study examines a qubit's coherence under non-Hermitian -symmetric dynamics, highlighting significantly enhanced coherence times compared to Hermitian setups. The effect is especially pronounced when both the system and environment exhibit -symmetry. Interestingly, greater environmental non-Hermiticity correlates with extended coherence, contrary to traditional expectations. These findings point to promising strategies for managing decoherence, which could significantly advance approaches to quantum information processing.
arXiv comment9 pages, 6 figures
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