dorsal/arxiv
View SchemaQuantum kinetics of refocusing
| Authors | Leonid P. Pryadko, Pinaki Sengupta |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0510001 |
| URL | https://arxiv.org/abs/quant-ph/0510001 |
Abstract
We consider quantum kinetics of an open quantum system in the presence of periodic fields designed to suppress the internal evolution and shield the system from generic low-frequency environment (refocusing or dynamical decoupling in application to multi-qubit systems). Assuming that the refocusing has order K, that is, for frozen environment the cumulant expansion of the evolution operator over the period tau begins with the term ~tau^(K+1), we trace the associated cancellations in the kernel of the quantum kinetic equation in the Floquet formalism and characterize the remaining decoherence processes.
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"abstract": "We consider quantum kinetics of an open quantum system in the presence of\nperiodic fields designed to suppress the internal evolution and shield the\nsystem from generic low-frequency environment (refocusing or dynamical\ndecoupling in application to multi-qubit systems). Assuming that the refocusing\nhas order K, that is, for frozen environment the cumulant expansion of the\nevolution operator over the period tau begins with the term ~tau^(K+1), we\ntrace the associated cancellations in the kernel of the quantum kinetic\nequation in the Floquet formalism and characterize the remaining decoherence\nprocesses.",
"arxiv_id": "quant-ph/0510001",
"authors": [
"Leonid P. Pryadko",
"Pinaki Sengupta"
],
"categories": [
"quant-ph"
],
"title": "Quantum kinetics of refocusing",
"url": "https://arxiv.org/abs/quant-ph/0510001"
},
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