Quantum Optical State Comparison Amplifier
Eleftheriadou, Electra and Barnett, Steve and Jeffers, John (2013) Quantum Optical State Comparison Amplifier. Physical Review Letters, 111 (21). 213601. ISSN 0031-9007
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It is a fundamental principle of quantum theory that an unknown state cannot be copied or, as a consequence, an unknown optical signal cannot be amplified deterministically and perfectly. Here we describe a protocol that provides nondeterministic quantum optical amplification in the coherent state basis with high gain and high fidelity and which does not use quantum resources. The scheme is based on two mature quantum optical technologies: coherent state comparison and photon subtraction. The method compares favorably with all previous nondeterministic amplifiers in terms of fidelity and success probability.
| Author(s): | Eleftheriadou, Electra, Barnett, Steve and Jeffers, John  ORCID: https://orcid.org/0000-0002-8573-1675 | Item type: | Article |
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| ID code: | 46042 |
| Keywords: | Physics and Astronomy(all) |
| Subjects: | UNSPECIFIED |
| Department: | Faculty of Science > Physics |
| Depositing user: | Pure Administrator |
| Date deposited: | 21 Nov 2013 09:48 |
| Last modified: | 15 Nov 2019 05:40 |
| Related URLs: | |
| URI: | https://strathprints.strath.ac.uk/id/eprint/46042 |
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