dorsal/arxiv
View SchemaQuantum Noise Locking
| Authors | Kirk McKenzie, Eugeniy Mikhailov, Keisuke Goda, Ping Koy Lam, Nicolai Grosse, Malcolm B. Gray, Nergis Mavalvala, David E. McClelland |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0505164 |
| URL | https://arxiv.org/abs/quant-ph/0505164 |
| DOI | 10.1088/1464-4266/7/10/032 |
| Journal | J. Opt. B: Quantum Semiclass. Opt. 7, S421-S428, (2005). |
Abstract
Quantum optical states which have no coherent amplitude, such as squeezed vacuum states, can not rely on standard readout techniques to generate error signals for control of the quadrature phase. Here we investigate the use of asymmetry in the quadrature variances to obtain a phase-sensitive readout and to lock the phase of a squeezed vacuum state, a technique which we call noise locking (NL). We carry out a theoretical derivation of the NL error signal and the associated stability of the squeezed and anti-squeezed lock points. Experimental data for the NL technique both in the presence and absence of coherent fields are shown, including a comparison with coherent locking techniques. Finally, we use NL to enable a stable readout of the squeezed vacuum state on a homodyne detector.
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"abstract": "Quantum optical states which have no coherent amplitude, such as squeezed\nvacuum states, can not rely on standard readout techniques to generate error\nsignals for control of the quadrature phase. Here we investigate the use of\nasymmetry in the quadrature variances to obtain a phase-sensitive readout and\nto lock the phase of a squeezed vacuum state, a technique which we call noise\nlocking (NL). We carry out a theoretical derivation of the NL error signal and\nthe associated stability of the squeezed and anti-squeezed lock points.\nExperimental data for the NL technique both in the presence and absence of\ncoherent fields are shown, including a comparison with coherent locking\ntechniques. Finally, we use NL to enable a stable readout of the squeezed\nvacuum state on a homodyne detector.",
"arxiv_id": "quant-ph/0505164",
"authors": [
"Kirk McKenzie",
"Eugeniy Mikhailov",
"Keisuke Goda",
"Ping Koy Lam",
"Nicolai Grosse",
"Malcolm B. Gray",
"Nergis Mavalvala",
"David E. McClelland"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1464-4266/7/10/032",
"journal_ref": "J. Opt. B: Quantum Semiclass. Opt. 7, S421-S428, (2005).",
"title": "Quantum Noise Locking",
"url": "https://arxiv.org/abs/quant-ph/0505164"
},
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