dorsal/arxiv
View SchemaRapid State-Reduction of Quantum Systems Using Feedback Control
| Authors | Joshua Combes, Kurt Jacobs |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0508007 |
| URL | https://arxiv.org/abs/quant-ph/0508007 |
| DOI | 10.1103/PhysRevLett.96.010504 |
| Journal | Phys. Rev. Lett. 96, 010504 (2006) |
Abstract
We consider using Hamiltonian feedback control to increase the speed at which a continuous measurement purifies (reduces) the state of a quantum system, and thus to increase the speed of the preparation of pure states. For a measurement of an observable with N equispaced eigenvalues, we show that there exists a feedback algorithm which will speed up the rate of state-reduction by at least a factor of 2(N+1)/3.
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"abstract": "We consider using Hamiltonian feedback control to increase the speed at which\na continuous measurement purifies (reduces) the state of a quantum system, and\nthus to increase the speed of the preparation of pure states. For a measurement\nof an observable with N equispaced eigenvalues, we show that there exists a\nfeedback algorithm which will speed up the rate of state-reduction by at least\na factor of 2(N+1)/3.",
"arxiv_id": "quant-ph/0508007",
"authors": [
"Joshua Combes",
"Kurt Jacobs"
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"doi": "10.1103/PhysRevLett.96.010504",
"journal_ref": "Phys. Rev. Lett. 96, 010504 (2006)",
"title": "Rapid State-Reduction of Quantum Systems Using Feedback Control",
"url": "https://arxiv.org/abs/quant-ph/0508007"
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