Qutrit 系统中的冻结量子相干

IF 1.3 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

International Journal of Theoretical Physics Pub Date : 2024-11-23 DOI:10.1007/s10773-024-05832-3

Sanuja D, Mohanty, Biswajit Pradhan

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引用次数: 0

摘要

存在一些量子态，其量子相干性的特定度量不受噪声影响。在单量子比特受马尔可夫比特翻转和比特+相位翻转噪声影响的情况下，相干性的（l_1\）规范在布洛赫球表示的状态（（n_1,0,n_3\））下被冻结。在本研究中，我们通过分析 qutrit 布洛赫球的各种截面，寻找在量子通道中显示相干不变性的 qutrit 状态。我们在状态空间中发现了几个几何截面，它们在不同的噪声信道下表现出量子相干性的冻结现象。

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Frozen Quantum Coherence in Qutrit System

There exist quantum states for which the specific measure of quantum coherence remain unaffected by noise. In case of single qubit, subjected to Markovian bit-flip and bit+phase-flip noise, the \(l_1\) norm of coherence is found to be frozen for states (\(n_1,0,n_3\)) in Bloch sphere representation. In present work, we searched for qutrit states that would show invariance of coherence in quantum channel by analyzing various cross-sections of the qutrit Bloch sphere. We found several geometric sections in state space that exhibit frozen phenomenon for quantum coherence under different noisy channels.

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来源期刊

International Journal of Theoretical Physics 物理-物理：综合

CiteScore

2.50

自引率

21.40%

发文量

258

审稿时长

3.3 months

期刊介绍： International Journal of Theoretical Physics publishes original research and reviews in theoretical physics and neighboring fields. Dedicated to the unification of the latest physics research, this journal seeks to map the direction of future research by original work in traditional physics like general relativity, quantum theory with relativistic quantum field theory,as used in particle physics, and by fresh inquiry into quantum measurement theory, and other similarly fundamental areas, e.g. quantum geometry and quantum logic, etc.