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6 papers · 2 filters
A Quantum-Bayesian Route to Quantum-State Space
Christopher A. Fuchs, Ruediger Schack
In the quantum-Bayesian approach to quantum foundations, a quantum state is viewed as an expression of an agent's personalist Bayesian degrees of belief, or probabilities, concerni…
Geometry of Generalized Depolarizing Channels
Christian K. Burrell
A generalized depolarizing channel acts on an N-dimensional quantum system to compress the ``Bloch ball'' in N^2-1 directions; it has a corresponding compression vector. We investi…
Topological Order Following a Quantum Quench
D. I. Tsomokos, A. Hamma, W. Zhang +2
We determine the conditions under which topological order survives a rapid quantum quench. Specifically, we consider the case where a quantum spin system is prepared in the ground…
Statistical Inference from Imperfect Photon Detection
K. M. R. Audenaert, S. Scheel
We consider the statistical properties of photon detection with imperfect detectors that exhibit dark counts and less than unit efficiency, in the context of tomographic reconstruc…
Quantum-Bayesian Coherence
Christopher A. Fuchs, Ruediger Schack
In a quantum-Bayesian take on quantum mechanics, the Born Rule cannot be interpreted as a rule for setting measurement-outcome probabilities from an objective quantum state. But if…
Priors in quantum Bayesian inference
Christopher A. Fuchs, Ruediger Schack
In quantum Bayesian inference problems, any conclusions drawn from a finite number of measurements depend not only on the outcomes of the measurements but also on a prior. Here we…