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23 papers · 2 filters
Quantum memory receiver for superadditive communication using binary coherent states
Aleksandra Klimek, Michał Jachura, Wojciech Wasilewski +1
We propose a simple architecture based on multimode quantum memories for collective readout of classical information keyed using a pair coherent states, exemplified by the well-kno…
Non-signalling theories and generalized probability
Tomasz I. Tylec, Marek Kuś, Jacek Krajczok
We provide mathematicaly rigorous justification of using term "probability" in connection to the so called non-signalling theories,known also as Popescu's and Rohrlich's box worlds…
The ultimate precision limits for noisy frequency estimation
Andrea Smirne, Jan Kolodynski, Susana F. Huelga +1
Quantum metrology protocols allow to surpass precision limits typical to classical statistics. However, in recent years, no-go theorems have been formulated, which state that typic…
Analysis of assumptions of recent tests of local realism
Adam Bednorz
Local realism in recent experiments is excluded on condition of freedom or randomness of choice combined with no signaling between observers by implementations of simple quantum mo…
Reactive collisions of two ultracold particles in a harmonic trap
Joanna Jankowska, Zbigniew Idziaszek
We consider two ultracold particles confined in spherically symmetric harmonic trap and interacting via isotropic potential with absorbing boundary conditions at short range that m…
Generating entanglement between two-dimensional cavities in uniform acceleration
Bartosz Regula, Antony R. Lee, Andrzej Dragan +1
Moving cavities promise to be a suitable system for relativistic quantum information processing. It has been shown that an inertial and a uniformly accelerated one-dimensional cavi…