Discrimination of quantum states and probabilistic quantum algorithms

Janos A. Bergou

doi:10.1117/12.547198

25 May 2004 Discrimination of quantum states and probabilistic quantum algorithms

Janos A. Bergou

Proceedings Volume 5472, Noise and Information in Nanoelectronics, Sensors, and Standards II; (2004) https://doi.org/10.1117/12.547198
Event: Second International Symposium on Fluctuations and Noise, 2004, Maspalomas, Gran Canaria Island, Spain

Abstract

In quantum information and quantum computing, the carrier of information is some quantum system and information is encoded in its state. The state, however, is not an observable in quantum mechanics, thus a fundamental problem arises: after processing the information it has to be read out or, in other words, the state of the system must be determined. When the possible target states are orthogonal, this is a relatively simple task, provided the set of possible target states is known. But when the possible target states are not orthogonal their discrimination is far from being trivial even if their set is known. Thus the problem of discriminating among non-orthogonal states is ubiquitous in quantum information and quantum computing, underlying all communication and computing schemes. It is the subject of this talk to review recent theoretical and experimental advances in this field.

Citation Download Citation

Janos A. Bergou "Discrimination of quantum states and probabilistic quantum algorithms", Proc. SPIE 5472, Noise and Information in Nanoelectronics, Sensors, and Standards II, (25 May 2004); https://doi.org/10.1117/12.547198

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KEYWORDS

Quantum information

Failure analysis

Quantum computing

Sensors

Quantum communications

Computing systems

Data processing

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