5 papers
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…
The Structure of the Multiverse
David Deutsch
The structure of the multiverse is determined by information flow.
Machines, Logic and Quantum Physics
David Deutsch, Artur Ekert, Rossella Lupacchini
Though the truths of logic and pure mathematics are objective and independent of any contingent facts or laws of nature, our knowledge of these truths depends entirely on our knowl…
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…
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…