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Quantum state discrimination
Open accessAbstract
There are fundamental limits to the accuracy with which one can determine the state of a quantum system. I give an overview of the main approaches to quantum state discrimination. Several strategies exist. In quantum hypothesis testing, a quantum system is prepared in a member of a known, finite set of states, and the aim is to guess which one with the minimum probability of error. Error free discrimination is also sometimes possible, if we allow for the possibility of obtaining inconclusive results. If no prior information about the state is provided, then it is impractical to try to determine it exactly, and it must be estimated instead. In addition to reviewing these various strategies, I describe connections between state discrimination, the manipulation of quantum entanglement and quantum cloning. Recent experimental work is also discussed.
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Cited by
Advances in quantum cryptography
Pirandola, S., Andersen, U. L., Banchi, L., Berta, M., Bunandar, D., Colbeck, R., Englund, D., Gehring, T., Lupo, C., Ottaviani, C., et al. (2020) · Advances in Optics and Photonics · doi:10.1364/aop.361502 · Cited by 2,033
Phase-remapping attack in practical quantum-key-distribution systems
Fung, C.-H. F., Qi, B., Tamaki, K., & Lo, H.-K. (2007) · Physical Review A · doi:10.1103/physreva.75.032314 · Cited by 209
Universal discriminative quantum neural networks
Chen, H., Wossnig, L., Severini, S., Neven, H., & Mohseni, M. (2021) · Quantum Machine Intelligence · doi:10.1007/s42484-020-00025-7 · Cited by 89
Universal discriminative quantum neural networks
Chen, H., Wossnig, L., Severini, S., Neven, H., & Mohseni, M. (2018) · arXiv · doi:10.48550/arxiv.1805.08654 · Cited by 89
A Hybrid Quantum-Classical Approach to Mitigating Measurement Errors in Quantum Algorithms
Kwon, H., & Bae, J. (2021) · IEEE Transactions on Computers · doi:10.1109/tc.2020.3009664 · Cited by 54
Metadata
- Authors
- Chefles, A.
- Venue
- Contemporary Physics
- Publisher
- Informa UK Limited
- Published
- 2000-11
- Volume
- 41
- Issue
- 6
- Pages
- 401-424
- ISSN
- 0010-7514 (ISSN-L)
- 1366-5812
- OpenAlex
- W2029587304
- Cited by
- 416
- References
- 0
- FWCI
- 11.25
- Type
- journal article
- Language
- en
- Open access
- green
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