No Cloning of Orthogonal States in Composite Systems
- 6 April 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 80 (14) , 3137-3140
- https://doi.org/10.1103/physrevlett.80.3137
Abstract
The no-cloning principle tells us that nonorthogonal quantum states cannot be cloned, but it does not tell us that orthogonal states can always be cloned. We suggest a situation where the cloning transformations are restricted, leading to a novel type of no-cloning principle. In the case of a composite system made of two subsystems: if the subsystems are only available one after the other then there are various cases when orthogonal states cannot be cloned. Surprising examples are given, which give a radically better insight regarding the basic concepts of quantum cryptography.Keywords
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This publication has 10 references indexed in Scilit:
- Quantum Cryptography Based on Split Transmission of One-Bit Information in Two StepsPhysical Review Letters, 1997
- Quantum Cryptography with Orthogonal States?Physical Review Letters, 1996
- Goldenberg and Vaidman Reply:Physical Review Letters, 1996
- Noncommuting Mixed States Cannot Be BroadcastPhysical Review Letters, 1996
- Quantum-state disturbance versus information gain: Uncertainty relations for quantum informationPhysical Review A, 1996
- Quantum Cryptography Based on Orthogonal StatesPhysical Review Letters, 1995
- Quantum cryptography using any two nonorthogonal statesPhysical Review Letters, 1992
- Quantum cryptography without Bell’s theoremPhysical Review Letters, 1992
- Communication by EPR devicesPhysics Letters A, 1982
- A single quantum cannot be clonedNature, 1982