dorsal/arxiv
View SchemaFeedback Control of Non-linear Quantum Systems: a Rule of Thumb
| Authors | Kurt Jacobs, Austin P. Lund |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0701036 |
| URL | https://arxiv.org/abs/quant-ph/0701036 |
| DOI | 10.1103/PhysRevLett.99.020501 |
| Journal | Phys. Rev. Lett. 99, 020501 (2007) |
Abstract
We show that in the regime in which feedback control is most effective -- when measurements are relatively efficient, and feedback is relatively strong -- then, in the absence of any sharp inhomogeneity in the noise, it is always best to measure in a basis that does not commute with the system density matrix than one that does. That is, it is optimal to make measurements that disturb the state one is attempting to stabilize.
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"abstract": "We show that in the regime in which feedback control is most effective --\nwhen measurements are relatively efficient, and feedback is relatively strong\n-- then, in the absence of any sharp inhomogeneity in the noise, it is always\nbest to measure in a basis that does not commute with the system density matrix\nthan one that does. That is, it is optimal to make measurements that disturb\nthe state one is attempting to stabilize.",
"arxiv_id": "quant-ph/0701036",
"authors": [
"Kurt Jacobs",
"Austin P. Lund"
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"doi": "10.1103/PhysRevLett.99.020501",
"journal_ref": "Phys. Rev. Lett. 99, 020501 (2007)",
"title": "Feedback Control of Non-linear Quantum Systems: a Rule of Thumb",
"url": "https://arxiv.org/abs/quant-ph/0701036"
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