Quantum fidelity for arbitrary Gaussian states
- Submitting institution
-
University of York
- Unit of assessment
- 11 - Computer Science and Informatics
- Output identifier
- 54879757
- Type
- D - Journal article
- DOI
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10.1103/PhysRevLett.115.260501
- Title of journal
- Physical Review Letters
- Article number
- 260501
- First page
- -
- Volume
- 115
- Issue
- -
- ISSN
- 0031-9007
- Open access status
- Out of scope for open access requirements
- Month of publication
- December
- Year of publication
- 2015
- URL
-
-
- Supplementary information
-
-
- Request cross-referral to
- -
- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
- -
- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
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2
- Research group(s)
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-
- Citation count
- 79
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Sponsored by a Leverhulme Trust research fellowship and by the EPSRC through the grant “qDATA” and the UK quantum communications hub, this work solved an outstanding problem in quantum information theory: the computation of the fidelity between two arbitrary multimode Gaussian states. This result has been exploited to extend the study of continuous-variable protocols, such as quantum teleportation, from basic resource states to completely arbitrary Gaussian states. It also paved the way for the study of more general multimode problems in quantum metrology and quantum hypothesis testing, whose performances can now be computed in terms of the discovered fidelity formula.
- Author contribution statement
- -
- Non-English
- No
- English abstract
- -