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Quantum dynamics of a qubit coupled with a structured bath
Open accessAbstract
The dynamics of an unbiased spin-boson model with Lorentzian spectral density is investigated theoretically in terms of the perturbation theory based on a unitary transformation. The population difference P ( t ) and susceptibility χ '' (ω) are calculated for both the off-resonance case and the on-resonance case Δ∼Ω. The approach is checked by Shiba's relation and the sum rule. As well, the coherent–incoherent transition point α c can be determined.
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“Furthermore, it is well-known that non-Markovian dynamics better preserve quantum information, as non-Markovianity induces a backflow of quantum information from the reservoir to the central spin [106,107,108,109,110,111,112,113,114,115,116].”
From Quantum Models of Consciousness from a Quantum Information Science Perspective (2025) · cites this paper as [109]
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References 33 · Cited by 10
Research works printed but not linked: 2
- Nielsen M A, 2000, Quantum Computation and Quantum Information
- 10.1103/RevModPhys.59.1 · DOI · Paper page
Metadata
- Authors
- Huang, P., & Zheng, H.
- Affiliations
- Shanghai Jiao Tong University (CN)
- Venue
- Journal of Physics Condensed Matter
- Publisher
- IOP Publishing
- Published
- 2008-09-04
- Volume
- 20
- Issue
- 39
- Pages
- 395233
- ISSN
- 0953-8984 (ISSN-L)
- 1361-648X
- OpenAlex
- W2086606963
- Cited by
- 10
- References
- 33
- Citations by year
- 2025: 1 · 2018: 1 · 2017: 1 · 2016: 1 · 2012: 1
- FWCI
- 0.97
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Physics Condensed Matter (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation
- National Natural Science Foundation of China (10474062, 90503007)
- Topics
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Quantum and electron transport phenomena
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
- Keywords
- spin-boson model, qubit dynamics, Lorentzian spectral density, population differences, susceptibility, sum rules, open quantum systems
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