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10 papers · 2 filters
Universality of Computation in Real Quantum Theory
Alessio Belenchia, Giacomo Mauro D'Ariano, Paolo Perinotti
Recently de La Torre et al. [1] reconstructed Quantum Theory from its local structure on the basis of local discriminability and the existence of a one-parameter group of bipartite…
A simple proof of Bell's inequality
Lorenzo Maccone
Bell's theorem is a fundamental result in quantum mechanics: it discriminates between quantum mechanics and all theories where probabilities in measurement results arise from the i…
Quantum Field as a quantum cellular automaton: the Dirac free evolution in one dimension
Alessandro Bisio, Giacomo Mauro D'Ariano, Alessandro Tosini
We present a quantum cellular automaton model in one space-dimension which has the Dirac equation as emergent. This model, a discrete-time and causal unitary evolution of a lattice…
Electromagnetic channel capacity for practical purposes
Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone +1
We give analytic upper bounds to the channel capacity C for transmission of classical information in electromagnetic channels (bosonic channels with thermal noise). In the practica…
Experimental Demonstration of Adaptive Quantum State Estimation
Ryo Okamoto, Minako Iefuji, Satoshi Oyama +4
The first experimental demonstration of an adaptive quantum state estimation (AQSE) is reported. The strong consistency and asymptotic efficiency of AQSE have been mathematically p…
Ergodic and Mixing Quantum Channels in Finite Dimensions
Daniel Burgarth, Giulio Chiribella, Vittorio Giovannetti +2
The paper provides a systematic characterization of quantum ergodic and mixing channels in finite dimensions and a discussion of their structural properties. In particular, we disc…