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21 papers · 1 filter
Logical Pre- and Post-Selection paradoxes, measurement-disturbance and contextuality
M. S. Leifer, R. W. Spekkens
Many seemingly paradoxical effects are known in the predictions for outcomes of measurements made on pre- and post-selected quantum systems. A class of such effects, which we call…
Pre- and Post-selection paradoxes and contextuality in quantum mechanics
M. S. Leifer, R. W. Spekkens
Many seemingly paradoxical effects are known in the predictions for outcomes of intermediate measurements made on pre- and post-selected quantum systems. Despite appearances, these…
Entanglement under restricted operations: Analogy to mixed-state entanglement
Stephen D. Bartlett, Andrew C. Doherty, Robert W. Spekkens +1
We show that the classification of bi-partite pure entangled states when local quantum operations are restricted yields a structure that is analogous in many respects to that of mi…
Entanglement Assisted Metrology
Paola Cappellaro, Joseph Emerson, Nicolas Boulant +3
We propose a new approach to the measurement of a single spin state, based on nuclear magnetic resonance (NMR) techniques and inspired by the coherent control over many-body system…
Classical limit of quantum gravity in an accelerating universe
Frederic P. Schuller, Mattias N. R. Wohlfarth
A one-parameter deformation of Einstein?Hilbert gravity with an inverse Riemann curvature term is derived as the classical limit of quantum gravity compatible with an accelerating…
Intensity Thresholds and the Statistics of the Temporal Occurrence of Solar Flares
Marco Baiesi, Maya Paczuski, Attilio L. Stella
Introducing thresholds to analyze time series of emission from the Sun enables a new and simple definition of solar flare events, and their interoccurrence times. Rescaling time by…