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2004 August

Archive for August, 2004

Quantum cellular automata

Friday, August 27th, 2004

Date: 27 August, 2004

Who: Charles Hill (UQ)

Seminar type: Journal Club

Abstract:
There are many models of quantum computing. Familiar models include the quantum circuit model, the quantum Turing machine, and the cluster state with measurements. There is another model: the Quantum Cellular Automata. Watrous’ paper shows that Quantum Cellular Automata can simulate a quantum Turing machine with a constant slowdown. Conversely, he shows that a restricted class of cellular automata can be simulated efficiently by a quantum Turing machine.

Background:
Watrous, J., “On One Dimensional Quantum Cellular Automata”, In Proceedings of the 36th Annual Symposium on Foundations of Computer Science, 1995, 528-537

Equality conditions for strong subadditivity

Friday, August 6th, 2004

Date: 6 August, 2004

Who: Denes Petz (Budapest)

Seminar type: Research