Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for High Energy PhysicsES2k papers
- Institució Catalana de Recerca i Estudis AvançatsES1.3k papers
- Centre National de la Recherche ScientifiqueFR1.2k papers
- University of PisaIT1.2k papers
- University College LondonGB1.1k papers
- Lawrence Berkeley National LaboratoryUS1.1k papers
- University of MichiganUS1.1k papers
- University of GenevaCH1.1k papers
- The Ohio State UniversityUS1.1k papers
- University of ChicagoUS1k papers
- Yale UniversityUS1k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT1k papers
15 papers · 2 filters
Quantum Reverse Shannon Theorem
Charles H. Bennett, Igor Devetak, Aram W. Harrow +2
Dual to the usual noisy channel coding problem, where a noisy (classical or quantum) channel is used to simulate a noiseless one, reverse Shannon theorems concern the use of noisel…
Atomtronics with holes: Coherent transport of an empty site in a triple well potential
Albert Benseny, Sonia Fernández-Vidal, Joan Bagudà +5
We investigate arrays of three traps with two fermionic or bosonic atoms. The tunneling interaction between neighboring sites is used to prepare multi-site dark states for the empt…
Continuous-variables entanglement purification with atomic systems
Stojan Rebic, Stefano Mancini, Giovanna Morigi +1
We present a proposal for entanglement purification of the continuous-variable quantum state of two propagating optical fields. The scheme is based on letting each field interact w…
Collective decoherence of cold atoms coupled to a Bose-Einstein condensate
M. A. Cirone, G. De Chiara, G. M. Palma +1
We examine the time evolution of cold atoms (impurities) interacting with an environment consisting of a degenerate bosonic quantum gas. The impurity atoms differ from the environm…
Comment on "Nongeometric Conditional Phase Shift via Adiabatic Evolution of Dark Eigenstates: A New Approach to Quantum Computation"
Ognyan Oreshkov, John Calsamiglia
In [Phys. Rev. Lett. 95, 080502 (2005)], Zheng proposed a scheme for implementing a conditional phase shift via adiabatic passages. The author claims that the gate is "neither of d…
Estimation of quantum finite mixtures
J. I. de Vicente, J. Calsamiglia, R. Munoz-Tapia +1
We consider the problem of determining the weights of a quantum ensemble. That is to say, given a quantum system that is in a set of possible known states according to an unknown p…
General conditions for approximate quantum error correction and near-optimal recovery channels
Cédric Bény, Ognyan Oreshkov
We derive necessary and sufficient conditions for the approximate correctability of a quantum code, generalizing the Knill-Laflamme conditions for exact error correction. Our measu…
Manipulating mesoscopic multipartite entanglement with atom-light interfaces
Julia Stasińska, Carles Rodó, Simone Paganelli +2
Entanglement between two macroscopic atomic ensembles induced by measurement on an ancillary light system has proven to be a powerful method for engineering quantum memories and qu…
Entanglement percolation in quantum complex networks
M. Cuquet, J. Calsamiglia
Quantum networks are essential to quantum information distributed applications, and communicating over them is a key challenge. Complex networks have rich and intriguing properties…
Holonomic quantum computation in subsystems
Ognyan Oreshkov
We introduce a generalized method of holonomic quantum computation (HQC) based on encoding in subsystems. As an application, we propose a scheme for applying holonomic gates to une…
Scheme for fault-tolerant holonomic computation on stabilizer codes
Ognyan Oreshkov, Todd A. Brun, Daniel A. Lidar
This paper generalizes and expands upon the work [Phys. Rev. Lett. 102, 070502 (2009)] where we introduced a scheme for fault-tolerant holonomic quantum computation (HQC) on stabil…
Light scattering by ultracold atoms in an optical lattice
Stefan Rist, Chiara Menotti, Giovanna Morigi
We investigate theoretically light scattering of photons by ultracold atoms in an optical lattice in the linear regime. A full quantum theory for the atom-photon interactions is de…
Creating Single Collective Atomic Excitations via Spontaneous Raman Emission in Inhomogeneously Broadened Systems : Beyond the Adiabatic Approximation
Carlo Ottaviani, Christoph Simon, Hugues de Riedmatten +4
The creation of single collective excitations in atomic ensembles via spontaneous Raman emission plays a key role in several quantum communication protocols, starting with the semi…
Doppler-free Adiabatic Self-Induced Transparency
Yu. Loiko, C. Serrat, R. Vilaseca +3
We demonstrate that a Doppler broadened two-level medium can be made transparent to a laser pulse by an appropriate adiabatic variation of the laser field amplitude and its nominal…
Photonic spectrum of bichromatic optical lattices
Stefan Rist, Patrizia Vignolo, Giovanna Morigi
We study the photonic spectrum of a one-dimensional optical lattice possessing a double primitive cell, when the atoms are well localized at the lattice minima. While a one-dimensi…