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quant-ph2004
Qubit Field Theory
David Deutsch
The canonical commutation relations of quantum field theory require all pairs of observables located in spacelike-separated regions to commute. In the theory as it is currently con…
quant-ph2001
The Structure of the Multiverse
David Deutsch
The structure of the multiverse is determined by information flow.
quant-ph1999
Information Flow in Entangled Quantum Systems
David Deutsch, Patrick Hayden
All information in quantum systems is, notwithstanding Bell's theorem, localised. Measuring or otherwise interacting with a quantum system S has no effect on distant systems from w…
quant-ph1996
Stabilisation of Quantum Computations by Symmetrisation
Adriano Barenco, Andre` Berthiaume, David Deutsch +3
We propose a method for the stabilisation of quantum computations (including quantum state storage). The method is based on the operation of projection into , the symmetr…