dorsal/arxiv
View SchemaStrategies for Real-Time Position Control of a Single Atom in Cavity QED
| Authors | T. W. Lynn, K. Birnbaum, H. J. Kimble |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0507064 |
| URL | https://arxiv.org/abs/quant-ph/0507064 |
| DOI | 10.1088/1464-4266/7/10/004 |
Abstract
Recent realizations of single-atom trapping and tracking in cavity QED open the door for feedback schemes which actively stabilize the motion of a single atom in real time. We present feedback algorithms for cooling the radial component of motion for a single atom trapped by strong coupling to single-photon fields in an optical cavity. Performance of various algorithms is studied through simulations of single-atom trajectories, with full dynamical and measurement noise included. Closed loop feedback algorithms compare favorably to open-loop "switching" analogs, demonstrating the importance of applying actual position information in real time. The high optical information rate in current experiments enables real-time tracking that approaches the standard quantum limit for broadband position measurements, suggesting that realistic active feedback schemes may reach a regime where measurement backaction appreciably alters the motional dynamics.
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"date_created": "2026-03-02T18:02:17.044000Z",
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"abstract": "Recent realizations of single-atom trapping and tracking in cavity QED open\nthe door for feedback schemes which actively stabilize the motion of a single\natom in real time. We present feedback algorithms for cooling the radial\ncomponent of motion for a single atom trapped by strong coupling to\nsingle-photon fields in an optical cavity. Performance of various algorithms is\nstudied through simulations of single-atom trajectories, with full dynamical\nand measurement noise included. Closed loop feedback algorithms compare\nfavorably to open-loop \"switching\" analogs, demonstrating the importance of\napplying actual position information in real time. The high optical information\nrate in current experiments enables real-time tracking that approaches the\nstandard quantum limit for broadband position measurements, suggesting that\nrealistic active feedback schemes may reach a regime where measurement\nbackaction appreciably alters the motional dynamics.",
"arxiv_id": "quant-ph/0507064",
"authors": [
"T. W. Lynn",
"K. Birnbaum",
"H. J. Kimble"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1464-4266/7/10/004",
"title": "Strategies for Real-Time Position Control of a Single Atom in Cavity QED",
"url": "https://arxiv.org/abs/quant-ph/0507064"
},
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