NETWORK: Semantics of Quantum Computation

Lead Research Organisation: University of Glasgow
Department Name: School of Computing Science

Abstract

Quantum computation (more generally, quantum information processing)has become established as an exciting interdisciplinary research fieldat the intersection of physics, computer science and mathematics. Computing devices based on the laws of quantum physics have the potential to hugely increase our capabilities in both algorithmics and cryptography. The former concerns the design of efficient techniques for solving computational problems; it is possible that quantum computers will enable the solution of previously intractable problems. The latter is important for secure electronic communication; by harnessing quantum effects it is possible to devise absolutely secure cryptosystems, unbreakable even by quantum computers. Theoretical computer scientists have recently found several new and exciting ways to applytheir distinctive techniques to quantum computing; the emphasis is different from previous work on cryptography and algorithm design. Thisactivity includes the design and study of quantum programminglanguages, to support the development of reliable software for quantum computers; the development ofquantum logics to support verification of quantum programs; semanticstudies of the foundations of quantum mechanics; semantics-basedanalysis of information flow in quantum protocols; formalspecification and verification of quantum cryptographic systems. A substantial portion of this research is taking place in the UK. Thepurpose of this network is to build on the existing activity to establish a cohesive community that candevelop into a UK-led international research community.

Publications

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A.S. Davidson T (2011) Formal Analysis of Quantum Systems using Process Calculus in Electronic Proceedings in Theoretical Computer Science

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Davidson Tim (2012) Model Checking for Communicating Quantum Processes in INTERNATIONAL JOURNAL OF UNCONVENTIONAL COMPUTING

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Dixon L (2009) Graphical reasoning in compact closed categories for quantum computation in Annals of Mathematics and Artificial Intelligence

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Hines P (2008) Machine semantics in Theoretical Computer Science

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Kashefi E (2009) Twisted Graph States for Ancilla-driven Universal Quantum Computation in Electronic Notes in Theoretical Computer Science

 
Description This network grant helped to consolidate and enlarge the UK research community in the field of semantics-based approaches to quantum information and quantum computation. The grant did not provide direct funding for research, but it enabled members of the network to travel in order to carry out collaborative research and to present the results of research at conferences. In addition, the network organised annual workshops. The publications reported are a small selection of publications whose production and/or presentation were assisted by the grant. The book "Semantic Techniques in Quantum Computation" was produced as a specific goal of the network, with chapters contributed by network members and collaborators.
Exploitation Route The community has continued to develop and the UK is still the international leader in this field. A follow-on network, Structures at the Interface of Physics and Computer Science (EP/I03596X/1) has enlarged the scope of the field to include foundations of quantum mechanics, bringing in several physicists.
Sectors Digital/Communication/Information Technologies (including Software)