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
26 papers · 2 filters
Geometrical and physical properties of maths-type q-deformed coherent states for or
C. Quesne, K. A. Penson, V. M. Tkachuk
We compare the geometrical and physical properties of the maths-type coherent states for with those of the same for .
Security of Quantum Key Distribution with Coherent States and Homodyne Detection
S. Iblisdir, G. Van Assche, N. J. Cerf
We assess the security of a quantum key distribution protocol relying on the transmission of Gaussian-modulated coherent states and homodyne detection. This protocol is shown to be…
Quantum key distribution using gaussian-modulated coherent states
F. Grosshans, G. Van Assche, J. Wenger +3
Quantum continuous variables are being explored as an alternative means to implement quantum key distribution, which is usually based on single photon counting. The former approach…
Optimized time-dependent perturbation theory for pulse-driven quantum dynamics in atomic or molecular systems
D. Daems, S. Guérin, H. R. Jauslin +2
We present a time-dependent perturbative approach adapted to the treatment of intense pulsed interactions. We show there is a freedom in choosing secular terms and use it to optimi…
How to measure squeezing and entanglement of Gaussian states without homodyning
Jaromir Fiurasek, Nicolas J. Cerf
We propose a scheme for measuring the squeezing, purity, and entanglement of Gaussian states of light that does not require homodyne detection. The suggested setup only needs beam…
Continuous-variable quantum cryptography is secure against non-gaussian attacks
Frederic Grosshans, Nicolas J. Cerf
A general study of arbitrary finite-size coherent attacks against continuous-variable quantum cryptographic schemes is presented. It is shown that, if the size of the blocks that c…
Reversibility of continuous-variable quantum cloning
R. Filip, J. Fiurasek, P. Marek
We analyze a reversibility of optimal Gaussian quantum cloning of a coherent state using only local operations on the clones and classical communication between them and p…
Reaching optimally oriented molecular states by laser kicks
D. Sugny, A. Keller, O. Atabek +4
We present a strategy for post-pulse orientation aiming both at efficiency and maximal duration within a rotational period. We first identify the optimally oriented states which fu…
Noncontextuality, Finite Precision Measurement and the Kochen-Specker Theorem
Jonathan Barrett, Adrian Kent
Meyer recently queried whether non-contextual hidden variable models can, despite the Kochen-Specker theorem, simulate the predictions of quantum mechanics to within any fixed fini…
Probabilistic quantum multimeters
Jaromir Fiurasek, Miloslav Dusek
We propose quantum devices that can realize probabilistically different projective measurements on a qubit. The desired measurement basis is selected by the quantum state of a prog…
Virtual Entanglement and Reconciliation Protocols for Quantum Cryptography with Continuous Variables
F. Grosshans, N. J. Cerf, J. Wenger +2
We discuss quantum key distribution protocols using quantum continuous variables. We show that such protocols can be made secure against individual gaussian attacks regardless the…
Generation of Superposition Spin States in an Atomic Ensemble
S. Massar, E. S. Polzik
A method for generating a mesoscopic superposition state of the collective spin variable of a gas of atoms is proposed. The state consists of a superposition of the atomic spins po…
Even and odd q-deformed charge coherent states and their nonclassical properties
X. -M. Liu, C. Quesne
Even and odd q-deformed charge coherent states are constructed, their (over)completeness proved and their generation explored. A -algebra realization of the SU(1,1) generato…
Quantum Fingerprinting with a Single Particle
Serge Massar
We show that the two slit experiment in which a single quantum particle interferes with itself can be interpreted as a quantum fingerprinting protocol: the interference pattern exh…
Violations of Bell inequalities as lower bounds on the communication cost of non-local correlations
Stefano Pironio
To reproduce in a local hidden variables theory correlations that violate Bell inequalities, communication must occur between the parties. We show that the amount of violation of a…
Adiabatic quantum search algorithm for structured problems
Jérémie Roland, Nicolas J. Cerf
The study of quantum computation has been motivated by the hope of finding efficient quantum algorithms for solving classically hard problems. In this context, quantum algorithms b…
Conditional generation of arbitrary multimode entangled states of light with linear optics
J. Fiurasek, S. Massar, N. J. Cerf
We propose a universal scheme for the probabilistic generation of an arbitrary multimode entangled state of light with finite expansion in Fock basis. The suggested setup involves…
Maths-type q-deformed coherent states for q > 1
C. Quesne, K. A. Penson, V. M. Tkachuk
Maths-type q-deformed coherent states with allow a resolution of unity in the form of an ordinary integral. They are sub-Poissonian and squeezed. They may be associated wit…
Unitary Gate Synthesis for Continuous Variable Systems
Jaromir Fiurasek
We investigate the synthesis of continuous-variable two-mode unitary gates in the setting where two modes A and B are coupled by a fixed quadratic Hamiltonian H. The gate synthesis…
Quantum coin tossing and bit-string generation in the presence of noise
Jonathan Barrett, Serge Massar
We discuss the security implications of noise for quantum coin tossing protocols. We find that if quantum error correction can be used, so that noise levels can be made arbitrarily…
Cloning a real d-dimensional quantum state on the edge of the no-signaling condition
Patrick Navez, Nicolas J. Cerf
We investigate a new class of quantum cloning machines that equally duplicate all real states in a Hilbert space of arbitrary dimension. By using the no-signaling condition, namely…
Quantum circuit implementation of the Hamiltonian versions of Grover's algorithm
J. Roland, N. J. Cerf
We analyze three different quantum search algorithms, the traditional Grover's algorithm, its continuous-time analogue by Hamiltonian evolution, and finally the quantum search by l…
Entanglement generation in continuously coupled parametric generators
Jiri Herec, Jaromir Fiurasek, Ladislav Mista
We investigate a compact source of entanglement. This device is composed of a pair of linearly coupled nonlinear waveguides operating by means of degenerate parametric downconversi…
Cloning the entanglement of a pair of quantum bits
Louis-Philippe Lamoureux, Patrick Navez, Jaromir Fiurasek +1
It is shown that any quantum operation that perfectly clones the entanglement of all maximally-entangled qubit pairs cannot preserve separability. This ``entanglement no-cloning''…