The DOI matches its Crossref record; 64 of the 64 references it cites were found in a registry or an index.
Coherent quantum feedback
Abstract
In the conventional picture of quantum feedback control, sensors perform measurements on the system, a classical controller processes the results of the measurements, and actuators supply semiclassical potentials to alter the behavior of the quantum system. In this picture, the sensors tend to destroy coherence in the process of making measurements, and although the controller can use the actuators to act coherently on the quantum system, it is processing and feeding back classical information. This paper proposes an alternative method for quantum feedback control, in which the sensors, controller, and actuators are quantum systems that interact coherently with the system to be controlled. In this picture, the controller gets, processes, and feeds back quantum information. Controllers that operate using such quantum feedback loops can perform tasks such as entanglement transfer that are not possible using classical feedback. Necessary and sufficient conditions are presented for Hamiltonian quantum systems to be controllable and observable using both classical and quantum feedback.
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Cites
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Self-citationUnconditional Quantum Teleportation
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Quantum Measurement and Control
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Quantum feedback: Theory, experiments, and applications
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Higher order decompositions of ordered operator exponentials
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Self-citation
Metadata
- Authors
- Lloyd, S.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2000-07-14
- Volume
- 62
- Issue
- 2
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2244749167
- Cited by
- 389
- References
- 64
- FWCI
- 6.66
- Type
- journal article
- Language
- en
- Open access
- closed
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