8.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- L. Sánchez‐Soto128 · h 37
- M. Martin-Delgado126 · h 47
- F. Llanes-Estrada122 · h 28
- P. Pérez-González2 profiles120 · h 71
- V. Martín-Mayor112 · h 41
- J. Caballero3 profiles103 · h 36
- D. Montes2 profiles100 · h 47
- A. Dobado96 · h 32
- A. L. Maroto79 · h 32
- F. Domínguez‐Adame79 · h 28
- J. Gallego73 · h 30
- L. A. Fernández70 · h 28
- Instituto de Astrofísica de CanariasES749 papers
- Centre National de la Recherche ScientifiqueFR727 papers
- Consejo Superior de Investigaciones CientíficasES669 papers
- Universidad de La LagunaES660 papers
- Universidad Autónoma de MadridES549 papers
- Instituto de Astrofísica de AndalucíaES514 papers
- National Institute for AstrophysicsIT368 papers
- Centro de AstrobiologíaES366 papers
- Universidad Carlos III de MadridES354 papers
- University of PaduaIT351 papers
- Institute of Mathematical SciencesIN350 papers
- Institute of Space SciencesES347 papers
33 papers · 2 filters
Mesoscopic mean-field theory for spin-boson chains in quantum optical systems
Pedro Nevado, Diego Porras
We present a theoretical description of a system of many spins strongly coupled to a bosonic chain. We rely on the use of a spin-wave theory describing the Gaussian fluctuations ar…
Circuit QED bright source for chiral entangled light based on dissipation
Fernando Quijandría, Diego Porras, Juan José García-Ripoll +1
Based on a circuit QED qubit-cavity array a source of two-mode entangled microwave radiation is designed. Our scheme is rooted in the combination of external driving, collective ph…
Quantum simulation of open-system dynamical maps with trapped ions
P. Schindler, M. Müller, D. Nigg +7
Dynamical maps describe general transformations of the state of a physical system, and their iteration can be interpreted as generating a discrete time evolution. Prime examples in…
Vanishing quantum discord is not necessary for completely-positive maps
Aharon Brodutch, Animesh Datta, Kavan Modi +2
The description of the dynamics of a system that may be correlated with its environment is only meaningful within the context of a specific framework. Different frameworks rely upo…
Dissipative and stochastic geometric phase of a qubit within a canonical Langevin framework
Pedro Bargueño, S. Miret-Artés
Dissipative and stochastic effects in the geometric phase of a qubit are taken into account using a geometrical description of the corresponding open--system dynamics within a cano…
Informational completeness of continuous-variable measurements
D. Sych, J. Rehacek, Z. Hradil +2
We justify that homodyne tomography turns out to be informationally complete when the number of independent quadrature measurements is equal to the dimension of the density matrix…
Preparing topological PEPS on a quantum computer
Martin Schwarz, Toby S. Cubitt, Kristan Temme +2
Simulating of exotic phases of matter that are not amenable to classical techniques is one of the most important potential applications of quantum information processing. We presen…
Quantum polarization characterization and tomography
Jonas Soderholm, Gunnar Bjork, Andrei B. Klimov +2
We present a complete polarization characterization of any quantum state of two orthogonal polarization modes, and give a systematic measurement procedure to collect the necessary…
Frustration free gapless Hamiltonians for Matrix Product States
Carlos Fernández-González, Norbert Schuch, Michael M. Wolf +2
For every Matrix Product State (MPS) one can always construct a so-called parent Hamiltonian. This is a local, frustration free, Hamiltonian which has the MPS as ground state and i…
Excited-state phase transition leading to symmetry-breaking steady states in the Dicke model
Ricardo Puebla, Armando Relaño, Joaquín Retamosa
We study the phase diagram of the Dicke model in terms of the excitation energy and the radiation-matter coupling constant . Below a certain critical value of the coupling…
Entanglement, fractional magnetization and long-range interactions
Andrea Cadarso, Mikel Sanz, Michael M. Wolf +2
Based on the theory of Matrix Product States, we give precise statements and complete analytical proofs of the following claim: a large fractionalization in the magnetization or th…
Existence of an information unit as a postulate of quantum theory
Lluis Masanes, Markus P. Mueller, Remigiusz Augusiak +1
Does information play a significant role in the foundations of physics? Information is the abstraction that allows us to refer to the states of systems when we choose to ignore the…
Stochastic Quantization and Casimir Forces: Pistons of Arbitrary Cross Section
Pablo Rodriguez-Lopez, Ricardo Brito, Rodrigo Soto
Recently, a method based on stochastic quantization has been proposed to compute the Casimir force and its fluctuations in arbitrary geometries. It relies on the spectral decomposi…
Simulation of Jahn-Teller-Dicke Magnetic Structural Phase Transition with Trapped Ions
Peter A. Ivanov, Diego Porras, Svetoslav S. Ivanov +1
We study theoretically the collective Ee Jahn-Teller-Dicke distortion in a system of trapped ions. We focus in the limit of infinite range interactions in which an ensembl…
Casimir Energy and Entropy between perfect metal Spheres
Pablo Rodriguez-Lopez
We calculate the Casimir energy and entropy for two perfect metal spheres in the large and short separation limit. We obtain nonmonotonic behavior of the Helmholtz free energy with…
Many-body transverse interactions in the quantum annealing of the p-spin ferromagnet
Beatriz Seoane, Hidetoshi Nishimori
We study the performance of quantum annealing for the simple -body infinite-range ferromagnetic Ising model. In particular, we generalize the transverse antiferromagnetic intera…
Matrix Product States with long-range Localizable Entanglement
Thorsten B. Wahl, David Perez-Garcia, J. Ignacio Cirac
We derive a criterion to determine when a translationally invariant matrix product state (MPS) has long-range localizable entanglement, where that quantity remains finite in the th…
Symmetric discrete coherent states for n qubits
C. Munoz, A. B. Klimov, L. L. Sanchez-Soto
We put forward a method of constructing discrete coherent states for n qubits. After establishing appropriate displacement operators, the coherent states appear as displaced versio…
Hybrid classical-quantum formulations ask for hybrid notions
Carlos Barceló, Raúl Carballo-Rubio, Luis J. Garay +1
We reappraise some of the hybrid classical-quantum models proposed in the literature with the goal of retrieving some of their common characteristics. In particular, first, we anal…
Joint system quantum descriptions arising from local quantumness
Tom Cooney, Marius Junge, Miguel Navascues +2
Bipartite correlations generated by non-signalling physical systems that admit a finite-dimensional local quantum description cannot exceed the quantum limits, i.e., they can alway…
Quantum Steering and Space-Like Separation
Miguel Navascues, David Perez-Garcia
In non-relativistic quantum mechanics, measurements performed by separate observers are modeled via tensor products. In Algebraic Quantum Field Theory, though, local observables co…
Optimal error correction in topological subsystem codes
Ruben S. Andrist, H. Bombin, Helmut G. Katzgraber +1
A promising approach to overcome decoherence in quantum computing schemes is to perform active quantum error correction using topology. Topological subsystem codes incorporate both…
The fate of non-trivial entanglement under gravitational collapse
Eduardo Martin-Martinez, Luis J. Garay, Juan Leon
We analyse the evolution of the entanglement of a non-trivial initial quantum field state (which, for simplicity, has been taken to be a bipartite state made out of vacuum and the…
Distinguishing Causality Principles
Miklós Rédei, Iñaki San Pedro
We distinguish two sub-types of each of the two causality principles formulated in connection with the Common Cause Principle in [Hen05] and raise and investigate the problem of lo…