14.2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2k papers
- Vrije Universiteit BrusselBE1.8k papers
- University of Maryland, College ParkUS1.7k papers
- RWTH Aachen UniversityDE1.6k papers
- Massachusetts Institute of TechnologyUS1.6k papers
- University of Wisconsin–MadisonUS1.5k papers
- The Ohio State UniversityUS1.5k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.5k papers
- University of KansasUS1.5k papers
- UCLouvainBE1.5k papers
- Sungkyunkwan UniversityKR1.5k papers
- Universität HamburgDE1.5k papers
20 papers · 2 filters
Entanglement may enhance the channel capacity in arbitrary dimensions
E. Karpov, D. Daems, N. J. Cerf
We consider explicitly two examples of d-dimensional quantum channels with correlated noise and show that, in agreement with previous results on Pauli qubit channels, there are sit…
Lorentz-covariant deformed algebra with minimal length
C. Quesne, V. M. Tkachuk
The -dimensional two-parameter deformed algebra with minimal length introduced by Kempf is generalized to a Lorentz-covariant algebra describing a ()-dimensional quantized…
Optimal multicopy asymmetric Gaussian cloning of coherent states
Jaromir Fiurasek, Nicolas J. Cerf
We investigate the asymmetric Gaussian cloning of coherent states which produces M copies from N input replicas, such that the fidelity of all copies may be different. We show that…
Entanglement-enhanced classical capacity of two-qubit quantum channels with memory: the exact solution
D. Daems
The maximal amount of information which is reliably transmitted over two uses of general Pauli channels with memory is proven to be achieved by maximally entangled states beyond so…
Enhancement of entanglement transfer in a spin chain by phase shift-control
K. Maruyama, T. Iitaka, F. Nori
We study the effect of a phase shift on the amount of transferrable two-spin entanglement in a spin chain. We consider a ferromagnetic Heisenberg/XY spin chain, both numerically an…
Exploring scalar quantum walks on Cayley graphs
Olga Lopez Acevedo, Jérémie Roland, Nicolas J. Cerf
A quantum walk, \emph{i.e.}, the quantum evolution of a particle on a graph, is termed \emph{scalar} if the internal space of the moving particle (often called the coin) has a dime…
Observing quantum non-locality in the entanglement between modes of massive particles
S. Ashhab, Koji Maruyama, Franco Nori
We consider the question of whether it is possible to use the entanglement between spatially separated modes of massive particles to observe nonlocal quantum correlations. Mode ent…
Experimental Proof of Quantum Nonlocality without Squeezing
J. Niset, A. Acin, U. L. Andersen +4
It is shown that the ensemble where is a Gaussian distribution of finite variance and is a coherent state can be better discriminated with an en…
Simulation of bipartite qudit correlations
Julien Degorre, Sophie Laplante, Jérémie Roland
We present a protocol to simulate the quantum correlations of an arbitrary bipartite state, when the parties perform a measurement according to two traceless binary observables. We…
Unconditional optimality of Gaussian attacks against continuous-variable QKD
Raul Garcia-Patron, Nicolas J. Cerf
A fully general approach to the security analysis of continuous-variable quantum key distribution (CV-QKD) is presented. Provided that the quantum channel is estimated via the cova…
A single photon emitted by a single particle in free space vacuum modes and its resonant interaction with two- and three-level absorbers
R. N. Shakhmuratov, J. Odeurs, Paul Mandel
We consider the time-delayed coincidence counting of two photons emitted in a cascade by a single particle (atom, molecule, nucleus, etc). The time-dependence of the probability am…
Morse potential and its relationship with the Coulomb in a position-dependent mass background
B. Bagchi, P. S. Gorain, C. Quesne
We provide some explicit examples wherein the Schrödinger equation for the Morse potential remains exactly solvable in a position-dependent mass background. Furthermore, we show ho…
Multipartite Nonlocality without Entanglement in Many Dimensions
J. Niset, N. J. Cerf
We present a generic method to construct a product basis exhibiting Nonlocality Without Entanglement with parties each holding a system of dimension at least . This basis…
PT-symmetric quartic anharmonic oscillator and position-dependent mass in a perturbative approach
B. Bagchi, A. Banerjee, C. Quesne
To lowest order of perturbation theory we show that an equivalence can be established between a -symmetric generalized quartic anharmonic oscillator model and a Hermitian…
Efficient quantum key distribution secure against no-signalling eavesdroppers
Antonio Acin, Serge Massar, Stefano Pironio
By carrying out measurements on entangled states, two parties can generate a secret key which is secure not only against an eavesdropper bound by the laws of quantum mechanics, but…
Universal optical amplification without nonlinearity
V. Josse, M. Sabuncu, N. J. Cerf +2
We propose and experimentally realize a new scheme for universal phase-insensitive optical amplification. The presented scheme relies only on linear optics and homodyne detection,…
Lorentz-covariant deformed algebra with minimal length and application to the 1+1-dimensional Dirac oscillator
C. Quesne, V. M. Tkachuk
The -dimensional -two-parameter deformed algebra introduced by Kempf is generalized to a Lorentz-covariant algebra describing a ()-dimensional quantized space-time…
Entanglement enhanced classical capacity of quantum communication channels with correlated noise in arbitrary dimensions
E. Karpov, D. Daems, N. J. Cerf
We study the capacity of d-dimensional quantum channels with memory modeled by correlated noise. We show that, in agreement with previous results on Pauli qubit channels, there are…
Generalized Deformed Commutation Relations with Nonzero Minimal Uncertainties in Position and/or Momentum and Applications to Quantum Mechanics
Christiane Quesne, Volodymyr M. Tkachuk
Two generalizations of Kempf's quadratic canonical commutation relation in one dimension are considered. The first one is the most general quadratic commutation relation. The corre…
Multichannel coupling with supersymmetric quantum mechanics and exactly-solvable model for Feshbach resonance
J. -M. Sparenberg, B. F. Samsonov, F. Foucart +1
A new type of supersymmetric transformations of the coupled-channel radial Schroedinger equation is introduced, which do not conserve the vanishing behavior of solutions at the ori…