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MHz-rate semi-device-independent quantum random number generators based on unambiguous state discrimination
Jonatan Bohr Brask, Anthony Martin, William Esposito +4
An approach to quantum random number generation based on unambiguous quantum state discrimination (USD) is developed. We consider a prepare-and-measure protocol, where two non-orth…
Super-Activation of Quantum Steering
Marco Túlio Quintino, Marcus Huber, Nicolas Brunner
We consider Einstein-Podolsky-Rosen steering in the regime where the parties can perform collective measurements on many copies of a given shared entangled state. We derive a simpl…
Autonomous quantum clocks: does thermodynamics limit our ability to measure time?
Paul Erker, Mark T. Mitchison, Ralph Silva +3
Time remains one of the least well understood concepts in physics, most notably in quantum mechanics. A central goal is to find the fundamental limits of measuring time. One of the…
Better local hidden variable models for two-qubit Werner states and an upper bound on the Grothendieck constant
Flavien Hirsch, Marco Túlio Quintino, Tamás Vértesi +2
We consider the problem of reproducing the correlations obtained by arbitrary local projective measurements on the two-qubit Werner state …
Quantification of multidimensional entanglement stored in a crystal
Alexey Tiranov, Sébastien Designolle, Emmanuel Zambrini Cruzeiro +5
The use of multidimensional entanglement opens new perspectives for quantum information processing. However, an important challenge in practice is to certify and characterize multi…
Autonomous Quantum Refrigerator in a Circuit-QED Architecture Based on a Josephson Junction
Patrick P. Hofer, Martí Perarnau-Llobet, Jonatan Bohr Brask +3
An implementation of a small quantum absorption refrigerator in a circuit QED architecture is proposed. The setup consists of three harmonic oscillators coupled to a Josephson unct…