dorsal/arxiv
View SchemaEfficient Quantum State Estimation by Continuous Weak Measurement and Dynamical Control
| Authors | Greg A. Smith, Andrew Silberfarb, Ivan H. Deutsch, Poul S. Jessen |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0606115 |
| URL | https://arxiv.org/abs/quant-ph/0606115 |
| DOI | 10.1103/PhysRevLett.97.180403 |
Abstract
We demonstrate a fast, robust and non-destructive protocol for quantum state estimation based on continuous weak measurement in the presence of a controlled dynamical evolution. Our experiment uses optically probed atomic spins as a testbed, and successfully reconstructs a range of trial states with fidelities of ~90%. The procedure holds promise as a practical diagnostic tool for the study of complex quantum dynamics, the testing of quantum hardware, and as a starting point for new types of quantum feedback control.
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"abstract": "We demonstrate a fast, robust and non-destructive protocol for quantum state\nestimation based on continuous weak measurement in the presence of a controlled\ndynamical evolution. Our experiment uses optically probed atomic spins as a\ntestbed, and successfully reconstructs a range of trial states with fidelities\nof ~90%. The procedure holds promise as a practical diagnostic tool for the\nstudy of complex quantum dynamics, the testing of quantum hardware, and as a\nstarting point for new types of quantum feedback control.",
"arxiv_id": "quant-ph/0606115",
"authors": [
"Greg A. Smith",
"Andrew Silberfarb",
"Ivan H. Deutsch",
"Poul S. Jessen"
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"quant-ph"
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"doi": "10.1103/PhysRevLett.97.180403",
"title": "Efficient Quantum State Estimation by Continuous Weak Measurement and Dynamical Control",
"url": "https://arxiv.org/abs/quant-ph/0606115"
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