Physics – Quantum Physics
Scientific paper
2010-12-09
Physics
Quantum Physics
144 pages, 15 figures, PhD. Thesis, Submitted to Department of Electronics Quaid-i-Azam University Islamabad, Pakistn in 2007
Scientific paper
Theory of quantum games is relatively new to the literature and its applications to various areas of research are being explored. It is a novel interpretation of strategies and decisions in quantum domain. In the earlier work on quantum games considerable attention was given to the resolution of dilemmas present in corresponding classical games. Two separate quantum schemes were presented by Eisert et al. and Marinatto and Weber to resolve dilemmas in Prisoners' Dilemma and Battle of Sexes games respectively. However for the latter scheme it was argued that dilemma was not resolved. We have modified the quantization scheme of Marinatto and Weber to resolve the dilemma. We have developed a generalized quantization scheme for two person non-zero sum games which reduces to the existing schemes under certain conditions. Applications of this generalized quantization scheme to quantum information theory are studied. Measurement being ubiquitous in quantum mechanics can not be ignored in quantum games. With the help of generalized quantization scheme we have analyzed the effects of measurement on quantum games. Qubits are the important elements for playing quantum games and are generally prone to decoherence due to their interactions with environment. An analysis of quantum games in presence of quantum correlated noise is performed in the context of generalized quantization scheme. Quantum key distribution is one of the key issues of quantum information theory for the purpose of secure communication. Using mathematical framework of generalized quantization scheme we have proposed a protocol for quantum key distribution and a technique for quantum state tomography.
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