GIQ: Publications

	Grup d'Informació Quàntica
			PUBLICATIONS

Last modification 1, 2009.

2008

J. Calsamiglia, R. Munoz-Tapia, Ll. Masanes, A. Acin, E. Bagan, The quantum Chernoff bound as a measure of distinguishability between density matrices: application to qubit and Gaussian states, Phys. Rev. A 77, 032311 (2008).
K. Eckert, O. Romero-Isart, M. Rodriguez, M. Lewenstein, E. Polzik, A. Sanpera, Quantum non-demolition detection of strongly correlated systems, Nature Physics 4, 50-54 (2008).
M. Lewenstein, A. Sanpera, Probing quantum magnetism with cold atoms, Science, 319 292 (2008).
O. Oreshkov, D. A. Lidar, T. A. Brun, Operator quantum error correction for continuous dynamics, Phys. Rev. A 78, 022333 (2008).
C. Rodo, G. Adesso, and A. Sanpera, Operational Quantification of Continous Variables Correlations, Phys. Rev. Lett. 100, 110505 (2008).
E. Bagan, A. Monras, R. Munoz-Tapia, The phase variance of squeezed vacuum states, Phys. Rev. A 78, 043829 (2008).
S. Boixo, A. Monras, An operational interpretation for multipartite entanglement, Phys. Rev. Lett. 100, 100503 (2008).
V. Ahufinger, B. A. Malomed, G. Birkl, R. Corbalan, A. Sanpera, Double barrier potentials for matter-wave gap solitons, Phys. Rev. A 78, 013608 (2008).
G. F. Calvo, A. Picón, R. Zambrini, Measuring the Complete Transverse Spatial Mode Spectrum of a Wave Field, Phys. Rev. Lett. 100, 173902 (2008).
G. F. Calvo, A. Picón, Manipulation of single-photon states encoded in transverse spatial modes: possible and impossible tasks, Phys. Rev. A 77, 012302 (2008).
R. Neigovzen, C. Rodó, G. Adesso, A. Sanpera, Multipartite Continuous Variable Solution for the Byzantine Agreement Problem, Phys. Rev. A 77, 062307 (2008).
A. Monras, O. Romero-Isart, Quantum information processing in spin chains via quantum Zeno dynamics, arXiv:0801.1959.
J. Calsamiglia, M. Aspachs, R. Munoz-Tapia, E. Bagan, Phase-Covariant Quantum Benchmarks, arXiv:0807.5126.
M. Aspachs, J. Calsamiglia, R. Munoz-Tapia, E. Bagan, Phase estimation for thermal Gaussian states, arXiv:0811.3408.
L. Jiang, A. M. Rey, O. Romero-Isart, J. J Garcia-Ripoll, A. Sanpera, M D. Lukin, Preparation of Decoherence Free Cluster States with Optical Superlattices, arXiv:0811.3049.
O. Oreshkov, J. Calsamiglia, Distinguishability measures between ensembles of quantum states, arXiv:0812.3832.

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2007

K.M.R. Audenaert, J. Calsamiglia, Ll. Masanes, R. Munoz-Tapia, A. Acin, E. Bagan, F. Verstraete. The Quantum Chernoff Bound. Phys. Rev. Lett. 98, 160501 (2007).
P. Rapcan, J. Calsamiglia, R. Munoz-Tapia, E. Bagan, V. Buzek, Recycling of quantum information: Multiple observations of quantum systems, arXiv:0708.1086.
S. Boixo, A. Datta, S. T. Flammia, A. Shaji, E. Bagan, C. M. Caves, Quantum-limited metrology with product states, Phys. Rev. A 77, 012317 (2007).
V.Ahufinger, A. Membratu, R. Corbalan and A. Sanpera. Quantum switches and Quantum memories for matter-wave lattice solitons. New. J. Phys, 9 (2007).
O. Romero-Isart, J J. Garcia-Ripoll, Quantum Ratchets for Quantum Communication with Optical Superlattices, Phys. Rev. A 76, 052304 (2007).
A. Bramon, G. Garbarino, B.C. Hiesmayr. Quantum Mechanics with Neutral Kaons, arXiv:hep-ph/0703152 and Acta Physica Polonica B38, 2763-2776 (2007).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Kaonic quantitative complementarity and quantum erasers, AIP Conf. Proc. 962, 242-246 (2007)
G. F. Calvo, Antonio Picón. Spin-induced angular momentum switching. Optics Letters 32, 838 (2007).
G.F. Calvo, A. Picón, A. Bramon. Measuring two-photon orbital angular momentum entanglement. Phys. Rev. A 75, 012319 (2007).
K. Eckert, O. Romero-Isart, A. Sanpera. Efficient quantum-state transfer in spin-1 chains by adiabatic passage, New Jour. Phys. 9, 155 (2007)..
E. Bagan, J. Calsamiglia, R. Demkowicz-Dobrzanski, R. Munoz-Tapia. How to hide a secret direction, New J. Phys. 9 244 (2007).
K. Eckert, L. Zawitkowski, M.J. Leskinen, A. Sanpera, M. Lewenstein. Ultracold atomic F=2 spinor gas in an optical lattice. New. J. Phys. 9 133 (2007).
K. Eckert, Ł. Zawitkowski, A. Sanpera, M. Lewenstein, and E. S. Polzik. Quantum Polarization Spectroscopy of Ultracold Spinor Gases. Phys. Rev. Lett. 98, 100404 (2007).
M. Lewenstein, A. Sanpera, V. Ahufinger, B. Damski, A, Sen U. Sen . Ultracold Atomic gases in optical lattices: Mimicking condensed matter physcis and beyond. Advances in Physics 56 243 (2007).
A. Monras, M. G. A. Paris. Optimal quantum estimation of loss in bosonic channels, Phys. Rev. Lett. 98, 160401 (2007).
M. Pons, V. Ahufinger, C. Wunderlich, A. Sanpera, S. Braungardt, A. Sen(De), U. Sen, and M. Lewenstein. Trapped Ion Chain as a Neural Network: Error Resistant Quantum Computation. Phys. Rev. Lett. 98, 023003 (2007).
C. Rodó, O. Romero-Isart, K. Eckert, A. Sanpera. Efficiency in Quantum Key Distribution Protocols with Entangled Gaussian States. Open Syst. Inf. Dyn. 14, 69 (2007).
O. Romero-Isart, K. Eckert, C. Rodó, A. Sanpera. Transport and Entanglement Generation in the Bose-Hubbard Model. Journal of Phys. A-Math. and Theor. 40 8019-8031 (2007).
O. Romero-Isart, K. Eckert, A. Sanpera. Quantum State Transfer in Spin-1 Chains, Phys. Rev. A 73 R050303 (2007).
M. Moreno-Cardoner, J. Mur-Petit, M. Guilleumas, A. Polls, A. Sanpera, M. Lewenstein. Predicting spinor condensate dynamics from simple principles Phys. Rev. Lett. 99 020404 (2007).

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2006

A. Acín, J. Bae, E. Bagan, M. Baig, Ll. Massanes, R. Munoz-Tapia, Secrecy properties of quantum channels. Phys. Rev. A 73, 012327 (2006).
E. Bagan, M.A. Ballester, R.D. Gill, A. Monras, R. Munoz-Tapia. Optimal full estimation of qubit mixed states. Phys. Rev. A 73, 032301 (2006).
E. Bagan, M. A. Ballester, R. D. Gill, R. Munoz-Tapia, O. Romero-Isart. Separable Measurement Estimation of Density Matrices and its Fidelity Gap with Collective Protocols. Phys. Rev. Lett. 97, 130501 (2006).
E. Bagan, J. Calsamiglia, R. Demkowicz-Dobrzanski, R. Munoz-Tapia. How to hide a secret direction. arXiv:quant-ph/0606165.
E. Bagan, S. Iblisdir, R. Munoz-Tapia. Relative states, quantum axes and quantum references. Phys. Rev. A 73, 022341 (2006).
E. Bagan, R. Munoz-Tapia. Aligning Spatial Frames Through Quantum Channels. Int. J. Quant. Inf. 4, 5 (2006).
Albert Bramon, Gianni Garbarino, Beatrix C. Hiesmayr. Kaonic Quantum Erasers at KLOE:2 ?Erasing the Present changing the Past?. arXiv:hep-ph/0609314
A. Bramon, R. Escribano, G. Garbarino. Bell's inequality tests with meson-antimeson pairs. Found.Phys. 36 (2006) 563-584.
G. F. Calvo, A. Picón, E. Bagan. A Quantum Field Theory Twist to Photon Angular Momentum. Phys. Rev. A 73, 013805 (2006)
F. Hulpke, U. V. Poulsen, A. Sanpera, A. Sen De, U. Sen, M. Lewenstein. Unitarity as preservation of entropy and entanglement in quantum systems. Foundations of Physics 36, 477 (2006).
A. Mebrahtu, A. Sanpera, and M. Lewenstein. Splitting and merging an elongated Bose-Einstein condensate at finite temperature. Phys. Rev. A 73, 033601 (2006).
A. Monras. Optimal phase measurements with pure Gaussian states. Phys. Rev. A 73, 033821 (2006).
M. Moreno-Cardoner, J. Mur-Petit, M. Guilleumas, A. Polls, A. Sanpera, M. Lewenstein. Predicting spinor condensate dynamics from simple principles. arXiv:cond-mat/0611379.
J. Mur-Petit, M. Guilleumas, A. Polls, A. Sanpera, M. Lewenstein, K. Bongs, and K. Sengstock. Dynamics of 87Rb condensates at finite temperatures. Phys. Rev. A 73, 013629 (2006).
Jordi Mur-Petit, Montserrat Guilleumas, Artur Polls, Anna Sanpera, Maciej Lewenstein, Kai Bongs, Klaus Sengstock. Dynamics of F=1 spinor condensates at finite temperatures. Phys. Rev. A 73, 013629 (2006).
L. Sanchez-Palencia, V. Ahufinger, A. Kantian, J. Zakrzewski, A. Sanpera, M. Lewenstein. Strongly correlated Fermi-Bose mixtures in disordered optical lattices. J. Phys. B 39, 129 (2006).
A. Sen(De), U. Sen, V. Ahufinger, H. J. Briegel, A. Sanpera, and M. Lewenstein. Quantum-information processing in disordered and complex quantum systems. Phys. Rev. A 74, 062309 (2006).

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2005

V. Ahufinger, L. Sanchez-Palencia, A. Kantian, A. Sanpera, and M. Lewenstein. Disordered ultracold atomic gases in optical lattices: A case study of Fermi-Bose mixtures. Phys. Rev. A 72, 063616 (2005).
V.Ahufinger and A. Sanpera. Lattice solitons in quasicondensates. Phys. Rev. Lett. 94, 130403 (2005).
A. Acín, E. Bagan, M. Baig, Ll. Massanes, R. Munoz-Tapia. Multiple copy two-state discrimination with individual measurements. Phys. Rev A 71, 032338 (2005).
E. Bagan, M. A. Ballester, R. Munoz-Tapia, O. Romero-Isart. Measuring the purity of a qubit state: entanglement estimation with fully separable measurements. arXiv:quant-ph/0505083.
E. Bagan, M. A. Ballester, R. Munoz-Tapia, O. Romero-Isart. Purity estimation with separable measurements. Phys. Rev. Lett 95, 110504 (2005).
E. Bagan, A. Monras, R. Munoz-Tapia. Comprehensive analysis of quantum pure-state estimation for two-level systems. Phys. Rev. A 71, 062318 (2005).
A. Bramon, R. Escribano. Popper's test of quantum mechanics and two-photon "ghost" diffraction. arXiv:quant-ph/0507040.
A. Bramon, R. Escribano. Popper's test of Quantum Mechanics. Contribution to the book dedicated to Prof. Alberto Galindo, on occasion of his seventieth birthday. Fundamental Physics Meeting "Alberto Galindo", R. F. Alvarez-Estrada, A. Dobado, L. A. Fernandez, M. A. Martin-Delgado, A. Munoz Sudupe (Eds.). Aula Documental de Investigacion, Madrid, 2004, pp. 201-207. arXiv:quant-ph/0501134 (2005).
A. Bramon, R. Escribano, G. Garbarino. Bell's inequality tests: from photons to B-mesons. J.Mod.Opt. 52, 1681(2005).
Gabriel F. Calvo. Wigner representation and geometric transformations of optical orbital angular momentum spatial modes. Optics Letters (To be published).
K. Eckert, J. Mompart, G. Birkl, M. Lewenstein. One- and two-dimensional quantum walks in arrays of optical traps. arXiv:quant-ph/0503084
M. Navascues, J. Bae, J. I. Cirac, M. Lewenstein, A. Sanpera, A. Acin. Key distillation from Gaussian states by Gaussian operations. Phys. Rev. Lett. 94, 010501 (2005).
Rodion Neigovzen, Anna Sanpera. Continuous Variable Solution for Byzantine Agreement. arXiv:quant-ph/0507249.
K. Osterloh, M. Baig, L. Santos, P. Zoller, M. Lewenstein. Cold atoms in non-Abelian gauge potentials: From the Hofstadter "moth" to lattice gauge theory. Phys. Rev. Lett. 95, 010403 (2005).
Aditi Sen De, Ujjwal Sen, Veronica Ahufinger, Hans J. Briegel, Anna Sanpera, Maciej Lewenstein. Quantum Information Processing in Disordered and Complex Quantum Systems. arXiv:quant-ph/0507172.
Aditi Sen De, Ujjwal Sen, Maciej Lewenstein, Veronica Ahufinger, Marisa Pons, Anna Sanpera. Disordered complex systems using cold gases and trapped ions. arXiv:quant-ph/0508018.
Aditi Sen De, Ujjwal Sen, Maciej Lewenstein, Anna Sanpera. The separability versus entanglement problem. arXiv:quant-ph/0508032

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2004

V. Ahufinger, Sanpera A, Pedri P, L. Santos, M. Lewenstein. Creation and mobility of discrete solitons in Bose-Einstein condensates. Phys. Rev. A 69,053604 (2004).
E. Bagan, M. Baig, R. Munoz-Tapia. Quantum reverse engineering and reference-frame alignment without nonlocal correlations. Phys. Rev. A 70, 030301 (2004).
E. Bagan, M. Baig, R. Munoz-Tapia. Entanglement-assisted alignment of reference frames using a dense covariant coding. Phys. Rev. A 69, 050303 (2004).
E. Bagan, M. Baig, R. Munoz-Tapia, A. Rodriguez. Collective versus local measurements in a qubit mixed-state estimation. Phys. Rev. A 69, 010304 (2004).
M. Baig, J. Clua, D. A. Johnston, R. Villanova. Fixed boundary conditions analysis of the 3-D gonihedric Ising model with kappa=0. Phys.Lett. B 585, 180 (2004).
R. A. Bertlmann, A. Bramon, G. Garbarino, B. C. Hiesmayr. Violation of a Bell inequality in particle physics experimentally verified?. Phys. Lett. A 332, 355 (2004).
M. Bourennane, M. Eibl, C. Kurtsiefer, S. Gaertner, H. Weinfurter, O. Guhne, P. Hyllus, D. Bruss, M. Lewenstein, A. Sanpera. Experimental detection of multipartite entanglement using witness operators. Phys. Rev. Lett. 92, 087902 (2004).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Passive quantum erasers for neutral kaons. Contributed to Festschrift in Honor of Prof. Jose Adolfo de Azcarraga for his 60th Birthday, Salamanca, Spain. (2004). arXiv:quant-ph/0404086.
A. Bramon, G. Garbarino, B. C. Hiesmayr. Active and passive quantum erasers for neutral kaons. Phys. Rev. A 69, 062111 (2004).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Quantitative complementarity in two-path interferometry. Phys. Rev. A 69, 022112 (2004).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Quantitative duality and neutral kaon interferometry in cplear experiments. Eur. Phys. J. C32, 377 (2004).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Quantum Marking and Quantum Erasure for Neutral Kaons. Phys. Rev. Lett. 92, 020405 (2004).
K. Eckert, M. Lewenstein, G. Birkl, W. Ertmer, R. Corbalan, J. Mompart. Three level atom optics via the tunneling interaction. Phys. Rev. A 70, 023606 (2004).
R. García-Maraver, R. Corbalan, K. Eckert, S. Rebic, M. Artoni, J. Mompart. Cavity QED quantum phase gates for the intracavity field. Phys. Rev. A 70, 0622324 (2004).
F. Hulpke , D. Bruss, M. Lewenstein, A. Sanpera. Simplifying Schmidt number witnesses via higher-dimensional embeddings. Quantum Information & Computation 4, 207 (2004).
Y.V. Kartashov, L.C. Crasovan, A.S. Zelenina, Y.V. Kartashov, V.A. Vysloukh, A. Sanpera, M. Lewenstein, Ll. Torner. Soliton eigenvalue control in optical lattices. Phys. Rev. Lett 93, 143902 (2004).
H. Kreutzmann, U.V. Poulsen, M. Lewenstein, R. Dumpke, W. Ertmer, G. Birkl. A. Sanpera. Coherence properties of guided-atom interferometers. Phys. Rev. Lett. 92 163201 (2004).
A. Sanpera, A. Kantian, L. Sanchez-Palencia, J. Zakrzewski, M.Lewenstein. Atomic Fermi-Bose mixtures in inhomogeneous and random lattices: From Fermi glass to quantum spin glass and quantum percolation. Phys. Rev. Lett. 93, 040401 (2004).

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2003

V. Ahufinger, J. García-Ojalvo, J. Mompart, C. Torrent, R. Corbal·n, R. Vilaseca. Cavity solitons in two-level lasers with dense amplifying medium. Phys. Rev. Lett. 91, 083901 (2003).
E. Bagan, M. Baig, A. Monras, R. Munoz-Tapia. Optimal reconstruction of a pure qubit state with local measurements. Proceedings of the 8th ICSSUR, Rinton Press (2003)
E. Bagan, M. Baig, R. Munoz-Tapia. Minimal measurements of the gate fidelity of a qudit map. Phys. Rev. A 67, 014303 (2003).
A. Bramon, G. Garbarino, B. C. Hiesmayr. Quantitative duality and quantum erasure for neutral kaons. eConf C0309101: THWP005 (2003).
K. Eckert, O. Guhne, F. Hulpke, P. Hyllus, J. Korbicz, J. Mompart, D. Bruss, M. Lewenstein, A. Sanpera. Entanglement properties of composite quantum systems. Quantum Information Processing. Wiley-VCH, Berlin, ISBN: 352740371X, Eds. G. Leuchs i T. Beth, Wiley-VCH, Berlin, 87-95 (2003).
O. Guhne, P. Hyllus, D. Bruss, A. Ekert, M. Lewenstein, C. Macchiavello, A. Sanpera. Experimental detection of entanglement via witness operators and local measurements.
Journal of Modern Optics 50, 1079 (2003).
J. Mompart, K. Eckert, G. Birkl, W. Ertmer, M. Lewenstein. Quantum computing with spatially delocalized qubits. Phys. Rev. Lett. 90, 147901 (2003).

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2002

E. Bagan, M. Baig, R. Munoz-Tapia. Optimal scheme for estimating a pure qubit state via local measurements. Phys. Rev. Lett. 89, 277904 (2002).
M. Baig, R. Villanova. Scaling laws for the 2-D 8 state Potts model with fixed boundary conditions. Phys. Rev. B 65, 094428 (2002).
A. Bramon, G. Garbarino. A test of Local Realism with entangled kaon pairs and without inequalities. Phys. Rev. Lett. 89, 160401 (2002).
A. Bramon, G. Garbarino. Novel Bell's inequalities for entangled K0K0 pairs. Phys. Rev. Lett. 88. 304040 (2002).
K. Eckert, J. Mompart, X. Yi, J. Schliemann, D. Bruﬂ, G. Birkl, M. Lewenstein. Quantum computing in optical microtraps based on the motional states of neutral atoms. Phys. Rev. A 66, 042317 (2002).
O. Guhne, P. Hyllus, D. Bruss, A. Ekert, M. Lewenstein, C. Macchiavello, A. Sanpera. Detection of entanglement with few local measurements. Phys. Rev. A 66, 062605 (2002).
J. Mompart, R. Corbalan, L. Roso. Coherent population trapping in two-electron three-level systems with aligned spins. Phys. Rev. Lett. 88, 023607 (2002).

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2001

A. Acin, D. Bruss, M. Lewenstein, A. Sanpera. Classification of mixed three-qubit states. Phys. Rev. Lett. 87, 040401 (2001).
E. Bagan, M. Baig, A. Brey, R. Munoz-Tapia, R. Tarrach. Optimal Encoding and Decoding of a Spin Direction. Phys. Rev. A 63 2309 (2001).
E. Bagan, M. Baig, R. Munoz-Tapia. Communicating a direction using spin states. arXiv:quant-ph/0106155. Contribution to the ICQI, Rochester (NY) (2001).
E. Bagan, M. Baig, R. Munoz-Tapia. Aligning Reference Frames with Quantum States. Phys. Rev. Lett. 87, 257903 (2001).
E. Bagan, M. Baig, R. Munoz-Tapia. Communication of Spin Directions with Product States and Finite Measurements. Phys. Rev. A 64, 022305 (2001).
P. Salieres, B. Carre, L. Le Deroff, F. Grasbon, G.G. Paulus, H. Walther, R. Kopold, W. Becker, D.B. Milosevic, A. Sanpera, M. Lewenstein. Science 292, 902 (2001).
A. Sanpera, D. Bruss, M. Lewenstein. Schmidt-number witnesses and bound entanglement. Phys. Rev. A 63, 050301 (2001)

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2000

E. Bagan, M. Baig, A. Brey, R. Munoz-Tapia, R. Tarrach. Optimal strategies for sending information through a quantum channel. Phys. Rev. Lett. 85, 5230 (2000).
M. Lewenstein, D. Bruss, J.I. Cirac, B. Kraus, M. Kus, J. Samsonowicz, A. Sanpera, R. Tarrach. Separability and distillability in composite quantum systems - a primer. Journal of Modern Optics 47, 2481 (2000).