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16 papers · 2 filters
Continuous-variable entanglement distillation and non-commutative central limit theorems
Earl T. Campbell, Marco G. Genoni, Jens Eisert
Entanglement distillation transforms weakly entangled noisy states into highly entangled states, a primitive to be used in quantum repeater schemes and other protocols designed for…
Full randomness from arbitrarily deterministic events
Rodrigo Gallego, Lluis Masanes, Gonzalo de la Torre +3
Do completely unpredictable events exist in nature? Classical theory, being fully deterministic, completely excludes fundamental randomness. On the contrary, quantum theory allows…
Fractional Quantum Field Theory, Path Integral, and Stochastic Differential Equation for Strongly Interacting Many-Particle Systems
H. Kleinert
While free and weakly interacting particles are well described by a a second-quantized nonlinear Schrödinger field, or relativistic versions of it, the fields of strongly interacti…
Detection loophole attacks on semi-device-independent quantum and classical protocols
Michele Dall'Arno, Elsa Passaro, Rodrigo Gallego +2
Semi-device-independent quantum protocols realize information tasks - e.g. secure key distribution, random access coding, and randomness generation - in a scenario where no assumpt…
Positive Wigner functions render classical simulation of quantum computation efficient
A. Mari, J. Eisert
We show that quantum circuits where the initial state and all the following quantum operations can be represented by positive Wigner functions can be classically efficiently simula…
Wick's theorem for matrix product states
R. Hübener, A. Mari, J. Eisert
Matrix-product states and their continuous analogues are variational classes of states that capture quantum many-body systems or quantum fields with low entanglement; they are at t…