期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.187203
关键词
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资金
- EPSRC [EP/G004579/1]
- UK EPSRC
- QIPIRC
- Engineering and Physical Sciences Research Council [EP/G004579/1] Funding Source: researchfish
- EPSRC [EP/G004579/1] Funding Source: UKRI
We propose a scheme for the determination of the coupling parameters in a chain of interacting spins. This requires only time-resolved measurements over a single particle, simple data postprocessing and no state initialization or prior knowledge of the state of the chain. The protocol fits well into the context of quantum-dynamics characterization and is efficient even when the spin chain is affected by general dissipative and dephasing channels. We illustrate the performance of the scheme by analyzing explicit examples and discuss possible extensions.
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