Probabilistically perfect quantum cloning and unambiguous state discrimination
โ Scribed by Wen-Hai Zhang; Jie-Lin Dai; Zhuo-Liang Cao; Ming Yang
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 236 KB
- Volume
- 283
- Category
- Article
- ISSN
- 0030-4018
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
We show that the condition of no faster-than-light signalling restricts the number of quantum states that can be cloned in ลฝ . a given Hilbert space. This condition leads to the constraints on a probabilistic quantum cloning machine PQCM recently found by Duan and Guo.
Quantum theory restricts our ability to determine the state of a physical system. This is true even if we know for certain that it was prepared in one of a known set of possible states. I describe two types of optimal strategy for state discrimination. These are (i) state discrimination with minimum