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
34 papers · 2 filters
Economical quantum cloning in any dimension
Thomas Durt, Jaromir Fiurasek, Nicolas J. Cerf
The possibility of cloning a d-dimensional quantum system without an ancilla is explored, extending on the economical phase-covariant cloning machine found in [Phys. Rev. A {\bf 60…
Scalar and vector modulation instabilities induced by vacuum fluctuations in fibers: numerical study
E. Brainis, D. Amans, S. Massar
We study scalar and vector modulation instabilities induced by the vacuum fluctuations in birefringent optical fibers. To this end, stochastic coupled nonlinear Schrodinger equatio…
Measurement of the total energy of an isolated system by an internal observer
S. Massar, S. Popescu
We consider the situation in which an observer internal to an isolated system wants to measure the total energy of the isolated system (this includes his own energy, that of the me…
Multipartite Asymmetric Quantum Cloning
S. Iblisdir, A. Acin, N. Gisin +3
We investigate the optimal distribution of quantum information over multipartite systems in asymmetric settings. We introduce cloning transformations that take identical replic…
Multipartite Nonlocal Quantum Correlations Resistant to Imperfections
H. Buhrman, P. Hoyer, S. Massar +1
We use techniques for lower bounds on communication to derive necessary conditions in terms of detector efficiency or amount of super-luminal communication for being able to reprod…
Experimental demonstration of quantum memory for light
Brian Julsgaard, Jacob Sherson, J. Ignacio Cirac +2
The information carrier of today's communications, a weak pulse of light, is an intrinsically quantum object. As a consequence, complete information about the pulse cannot, even in…
Asymmetric phase-covariant d-dimensional cloning
L. -P. Lamoureux, N. J. Cerf
We consider cloning transformations of d-dimensional states of the form e^{iϕ_0}|0> + e^{iϕ_1}|1> +...+ e^{iϕ_{d-1}}|d-1> that are covariant with respect to rotations of the phases…
Secure Coherent-state Quantum Key Distribution Protocols with Efficient Reconciliation
G. Van Assche, S. Iblisdir, N. J. Cerf
We study the equivalence between a realistic quantum key distribution protocol using coherent states and homodyne detection and a formal entanglement purification protocol. Maximal…
Quantum entanglement can be simulated without communication
N. J. Cerf, N. Gisin, S. Massar +1
It has recently been shown that all causal correlations between two parties which output each one bit, a and b, when receiving each one bit, x and y, can be expressed as convex com…
Optimal finite measurements and Gauss quadratures
Sofyan Iblisdir, Jérémie Roland
We exhibit measurements for optimal state estimation which have a finite number of outcomes. This is achieved by a connection between finite optimal measurements and Gauss quadratu…
The optimal cloning of quantum coherent states is non-Gaussian
N. J. Cerf, O. Krueger, P. Navez +2
We consider the optimal cloning of quantum coherent states with single-clone and joint fidelity as figures of merit. Both optimal fidelities are attained for phase space translatio…
Quantum Gloves
D. Collins, L. Diosi, N. Gisin +2
The slogan "information is physical" has been so successful that it led to some excess. Classical and quantum information can be thought of independently of any physical implementa…
Noise resistance of adiabatic quantum computation using random matrix theory
Jeremie Roland, Nicolas J. Cerf
Besides the traditional circuit-based model of quantum computation, several quantum algorithms based on a continuous-time Hamiltonian evolution have recently been introduced, inclu…
Security of Quantum Bit-String Generation
Jonathan Barrett, Serge Massar
We consider the cryptographic task of bit-string generation. This is a generalisation of coin tossing in which two mistrustful parties wish to generate a string of random bits such…
Provably Secure Experimental Quantum Bit-String Generation
Louis-Philippe Lamoureux, Edouard Brainis, David Amans +2
Coin tossing is a cryptographic task in which two parties who do not trust each other aim to generate a common random bit. Using classical communication this is impossible, but non…
Loophole-free test of quantum non-locality using high-efficiency homodyne detectors
R. Garcia-Patron, J. Fiurasek, N. J. Cerf
We provide a detailed analysis of the recently proposed setup for a loophole-free test of Bell inequality using conditionally generated non-Gaussian states of light and balanced ho…
Field Theory reformulated without Self-energy Parts. The dressing Operator
Michel de Haan
The reformulation of field theory for avoiding self-energy parts in the dynamical evolution has been applied successfully in the framework of the Lee model, [M. de Haan. Ann. Phys.…
Effective-mass Schroedinger equation and generation of solvable potentials
B. Bagchi, P. Gorain, C. Quesne +1
A one-dimensional Schrödinger equation with position-dependent effective mass in the kinetic energy operator is studied in the framework of an algebra. New mass-deformed…
Experimental quantum key distribution over highly noisy channels
L. P. Lamoureux, E. Brainis, N. Cerf +3
Error filtration is a method for encoding the quantum state of a single particle into a higher dimensional Hilbert space in such a way that it becomes less sensitive to phase noise…
Error Filtration and Entanglement Purification for Quantum Communication
N. Gisin, N. Linden, S. Massar +1
The key realisation which lead to the emergence of the new field of quantum information processing is that quantum mechanics, the theory that describes microscopic particles, allow…
Thermodynamical Cost of Accessing Quantum Information
K. Maruyama, C. Brukner, V. Vedral
Thermodynamics is a macroscopic physical theory whose two very general laws are independent of any underlying dynamical laws and structures. Nevertheless, its generality enables us…
Lower bound on the number of Toffoli gates in a classical reversible circuit through quantum information concepts
Sandu Popescu, Berry Groisman, Serge Massar
The question of finding a lower bound on the number of Toffoli gates in a classical reversible circuit is addressed. A method based on quantum information concepts is proposed. The…
The Extent of Multi-particle Quantum Non-locality
Nick S. Jones, Noah Linden, Serge Massar
It is well known that entangled quantum states can be nonlocal: the correlations between local measurements carried out on these states cannot always be reproduced by local hidden…
A general scheme for the effective-mass Schrodinger equation and the generation of the associated potentials
B. Bagchi, P. Gorain, C. Quesne +1
A systematic procedure to study one-dimensional Schrödinger equation with a position-dependent effective mass (PDEM) in the kinetic energy operator is explored. The conventional fr…