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- International Solvay InstitutesBE43 papers
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6 papers · 2 filters
A complex periodic QES potential and exceptional points
B. Bagchi, C. Quesne, R. Roychoudhury
We show that the complex -symmetric periodic potential , where is real and is a positive integer, is quasi-exactly solvable. For…
Exactly-solvable coupled-channel potential models of atom-atom magnetic Feshbach resonances from supersymmetric quantum mechanics
Andrey M. Pupasov, Boris F. Samsonov, Jean-Marc Sparenberg
Starting from a system of radial Schrödinger equations with a vanishing potential and finite threshold differences between the channels, a coupled exactly-solvable…
Adiabatic quantum search with atoms in a cavity driven by lasers
D. Daems, S. Guérin
We propose an implementation of the quantum search algorithm of a marked item in an unsorted list of N items by adiabatic passage in a cavity-laser-atom system. We use an ensemble…
Quantum key distribution over 25 km with an all-fiber continuous-variable system
Jerome Lodewyck, Matthieu Bloch, Raul Garcia-Patron +8
We report on the implementation of a reverse-reconciliated coherent-state continuous-variable quantum key distribution system, with which we generated secret keys at a rate of more…
Device-independent security of quantum cryptography against collective attacks
Antonio Acin, Nicolas Brunner, Nicolas Gisin +3
We present the optimal collective attack on a Quantum Key Distribution (QKD) protocol in the "device-independent" security scenario, where no assumptions are made about the way the…
Experimental implementation of non-Gaussian attacks on a continuous-variable quantum key distribution system
Jerome Lodewyck, Thierry Debuisschert, Raul Garcia-Patron +3
An intercept-resend attack on a continuous-variable quantum-key-distribution protocol is investigated experimentally. By varying the interception fraction, one can implement a fami…