We address the problem of understanding, from first principles, the conditions under which a quantum system equilibrates rapidly with respect to a concrete observable. On the one hand, previously known general upper bounds on the time scales of equilibration were unrealistically long, with times scaling linearly with the dimension of the Hilbert space. These bounds proved to be tight since particular constructions of observables scaling in this way were found. On the other hand, the computed equilibration time scales for certain classes of typical measurements, or under the evolution of typical Hamiltonians, are unrealistically short. However, most physically relevant situations fall outside these two classes. In this paper, we provide a new upper bound on the equilibration time scales which, under some physically reasonable conditions, give much more realistic results than previously known. In particular, we apply this result to the paradigmatic case of a system interacting with a thermal bath, where we obtain an upper bound for the equilibration time scale independent of the size of the bath. In this way, we find general conditions that single out observables with realistic equilibration times within a physically relevant setup.

VL - 7 ER - TY - JOUR T1 - Erratum: Resource theory of coherence: Beyond states [Phys. Rev. AWe show on theoretical grounds that, even in the presence of noise, probabilistic measurement strategies (which have a certain probability of failure or abstention) can provide, upon a heralded successful outcome, estimates with a precision that exceeds the deterministic bounds for the average precision. This establishes a new ultimate bound on the phase estimation precision of particular measurement outcomes (or sequence of outcomes). For probe systems subject to local dephasing, we quantify such precision limit as a function of the probability of failure that can be tolerated. Our results show that the possibility of abstaining can set back the detrimental effects of noise.

VL - 18 UR - http://stacks.iop.org/1367-2630/18/i=10/a=103049?key=crossref.fb78efa5084e8d9fdb51f574cf3bfed3http://stacks.iop.org/1367-2630/18/i=10/a=103049/pdfhttp://stacks.iop.org/1367-2630/18/i=10/a=103049?key=crossref.fb78efa5084e8d9fdb51f574cf3bfed3 JO - New J. Phys. ER - TY - JOUR T1 - Quantifying {Entanglement} of {Maximal} {Dimension} in {Bipartite} {Mixed} {States} JF - Physical Review Letters Y1 - 2016 A1 - Sentís, Gael A1 - Eltschka, Christopher A1 - Gühne, Otfried A1 - Huber, Marcus A1 - Siewert, Jens AB - The Schmidt coefficients capture all entanglement properties of a pure bipartite state and therefore determine its usefulness for quantum information processing. While the quantification of the corresponding properties in mixed states is important both from a theoretical and a practical point of view, it is considerably more difficult, and methods beyond estimates for the concurrence are elusive. In particular this holds for a quantitative assessment of the most valuable resource, the forms of entanglement that can only exist in high-dimensional systems. We derive a framework for lower bounding the appropriate measure of entanglement, the so-called G-concurrence, through few local measurements. Moreover, we show that these bounds have relevant applications also for multipartite states. VL - 117 UR - https://link.aps.org/doi/10.1103/PhysRevLett.117.190502 ER - TY - JOUR T1 - The role of quantum information in thermodynamics—a topical review JF - Journal of Physics A: Mathematical and Theoretical Y1 - 2016 A1 - Goold, John A1 - Huber, Marcus A1 - Riera, Arnau A1 - Rio, Lídia del A1 - Paul Skrzypczyk VL - 49 UR - http://stacks.iop.org/1751-8121/49/i=14/a=143001?key=crossref.ce80cac2171964cc6d6c51ed12d1e014 ER - TY - JOUR T1 - Steering Maps and Their Application to Dimension-Bounded Steering JF - Physical Review Letters Y1 - 2016 A1 - Moroder, Tobias A1 - Gittsovich, Oleg A1 - Huber, Marcus A1 - Uola, Roope A1 - Gühne, Otfried VL - 116 UR - http://link.aps.org/doi/10.1103/PhysRevLett.116.090403 ER - TY - JOUR T1 - Entanglement–breaking indices JF - Journal of Mathematical Physics Y1 - 2015 A1 - Lami, L. A1 - Giovannetti, V. VL - 56 IS - 9 JO - J. Math. Phys. ER - TY - JOUR T1 - Mesoscopic superpositions of Tonks-Girardeau states and the Bose-Fermi mapping JF - Physical Review A Y1 - 2015 A1 - M.A. García-March A1 - A.Yuste A1 - B.Juliá-Díaz A1 - A.Polls AB - We study a one-dimensional gas of repulsively interacting ultracold bosons trapped in a double-well potential as the atom-atom interactions are tuned from zero to infinity. We concentrate on the properties of the excited states which evolve from the so-called NOON states to the NOON Tonks-Girardeau states. The relation between the latter and the Bose-Fermi mapping limit is explored. We state under which conditions NOON Tonks-Girardeau states, which are not predicted by the Bose-Fermi mapping, will appear in the spectrum. ER - TY - JOUR T1 - Relaxations of separability in multipartite systems: Semidefinite programs, witnesses and volumes JF - Journal of Physics A: Mathematical and Theoretical Y1 - 2015 A1 - Lancien, Cécilia A1 - Gühne, Otfried A1 - Sengupta, Ritabrata A1 - Huber, Marcus VL - 48 UR - http://stacks.iop.org/1751-8121/48/i=50/a=505302?key=crossref.2e93a28de5494676a0b866fa95ccebfd ER - TY - JOUR T1 - Strong Converse for the Classical Capacity of Optical Quantum Communication Channels JF - IEEE Transactions on Information Theory Y1 - 2015 A1 - Bardhan, Bhaskar Roy A1 - Garcia-Patron, Raul A1 - Wilde, Mark M. A1 - Winter, Andreas VL - 61 IS - 4 JO - IEEE Trans. Inform. Theory ER - TY - JOUR T1 - Fifty years of Bell’s theorem JF - Journal of Physics A: Mathematical and Theoretical Y1 - 2014 A1 - Nicolas Brunner A1 - Gühne, Otfried A1 - Huber, Marcus VL - 47 UR - http://stacks.iop.org/1751-8121/47/i=42/a=420301?key=crossref.9d548f14fc7338685392dcd6228de98d ER - TY - JOUR T1 - Probabilistic Metrology Attains Macroscopic Cloning of Quantum Clocks JF - Physical Review Letters Y1 - 2014 A1 - Gendra, B. A1 - Calsamiglia, John A1 - Muñoz-Tapia, R. A1 - E. Bagan A1 - Chiribella, G. VL - 113 UR - http://link.aps.org/doi/10.1103/PhysRevLett.113.260402 ER - TY - JOUR T1 - Steering Bound Entangled States: A Counterexample to the Stronger Peres Conjecture JF - Physical Review Letters Y1 - 2014 A1 - Moroder, Tobias A1 - Gittsovich, Oleg A1 - Huber, Marcus A1 - Gühne, Otfried AB - Quantum correlations are at the heart of many applications in quantum information science and, at the same time, they form the basis for discussions about genuine quantum effects and their difference to classical physics. On one hand, entanglement theory provides the tools to quantify correlations in information processing and many results have been obtained to discriminate useful entanglement, which can be distilled to a pure form, from bound entanglement, being of limited use in many applications. On the other hand, for discriminating quantum phenomena from their classical counterparts, Schr\"odinger and Bell introduced the notions of steering and local hidden variable models. We provide a method to generate systematically bound entangled quantum states which can still be used for steering and therefore to rule out local hidden state models. This sheds light on the relations between the various views on quantum correlations and disproves a widespread conjecture known as the stronger Peres conjecture. For practical applications, it implies that even the weakest form of entanglement can be certified in a semi-device independent way. VL - 113 IS - 5 JO - Phys. Rev. Lett. ER - TY - JOUR T1 - Unified approach to entanglement criteria using the Cauchy-Schwarz and Hölder inequalities JF - Physical Review A Y1 - 2014 A1 - Wölk, Sabine A1 - Huber, Marcus A1 - Gühne, Otfried AB - We present a unified approach to different recent entanglement criteria. Although they were developed in different ways, we show that they are all applications of a more general principle given by the Cauchy-Schwarz inequality. We explain this general principle and show how to use it to derive not only already known entanglement criteria, but also criteria which were unknown so far. We systematically investigate its potential and limitations to detect bipartite and multipartite entanglement. Furthermore, we describe how to apply our generalized entanglement detection scheme to find the measurement directions to verify the entanglement of a given state experimentally. VL - 90 IS - 2 JO - Phys. Rev. A ER - TY - JOUR T1 - Decomposition of any quantum measurement into extremals JF - Journal of Physics A: Mathematical and Theoretical Y1 - 2013 A1 - Sentís, G A1 - Gendra, B. A1 - Bartlett, S D A1 - Doherty, A C VL - 46 IS - 37 JO - J. Phys. A: Math. Theor. ER - TY - JOUR T1 - Examining the dimensionality of genuine multipartite entanglement JF - Quantum Information Processing Y1 - 2013 A1 - Spengler, Christoph A1 - Huber, Marcus A1 - Gabriel, Andreas A1 - Hiesmayr, Beatrix C. VL - 12 UR - http://link.springer.com/10.1007/s11128-012-0369-8 ER - TY - JOUR T1 - Quantum Metrology Assisted by Abstention JF - Physical Review Letters Y1 - 2013 A1 - Gendra, B. A1 - Ronco-Bonvehi, E. A1 - Calsamiglia, John A1 - Muñoz-Tapia, R. A1 - E. Bagan AB - The main goal of quantum metrology is to obtain accurate values of physical parameters using quantum probes. In this context, we show that abstention, i.e., the possibility of getting an inconclusive answer at readout, can drastically improve the measurement precision and even lead to a change in its asymptotic behavior, from the shot-noise to the Heisenberg scaling. We focus on phase estimation and quantify the required amount of abstention for a given precision. We also develop analytical tools to obtain the asymptotic behavior of the precision and required rate of abstention for arbitrary pure states. VL - 110 UR - http://prl.aps.org/abstract/PRL/v110/i10/e100501 IS - 10 JO - Phys. Rev. Lett. ER - TY - JOUR T1 - Routing quantum information in spin chains JF - Physical Review A Y1 - 2013 A1 - Paganelli, Simone A1 - Lorenzo, Salvatore A1 - Apollaro, Tony J. G. A1 - Plastina, Francesco A1 - Giorgi, Gian Luca VL - 87 IS - 6 JO - Phys. Rev. A ER - TY - JOUR T1 - Beating noise with abstention in state estimation JF - New Journal of Physics Y1 - 2012 A1 - Gendra, Bernat A1 - Ronco-Bonvehi, Elio A1 - Calsamiglia, John A1 - Muñoz-Tapia, Ramon A1 - Bagan, Emilio VL - 14 UR - http://iopscience.iop.org/1367-2630/14/10/105015 ER - TY - JOUR T1 - All Nonclassical Correlations Can Be Activated into Distillable Entanglement JF - Phys. Rev. Lett. Y1 - 2011 A1 - Piani, Marco A1 - Gharibian, Sevag A1 - Adesso, Gerardo A1 - Calsamiglia, John A1 - Horodecki, Paweł A1 - Winter, Andreas PB - American Physical Society VL - 106 UR - http://prl.aps.org/abstract/PRL/v106/i22/e220403 ER - TY - JOUR T1 - Characterizing quantumness via entanglement creation JF - International Journal of Quantum Information Y1 - 2011 A1 - Gharibian, Sevag A1 - Piani, Marco A1 - Adesso, Gerardo A1 - Calsamiglia, John A1 - Pawel Horodecki VL - 9 UR - http://arxiv.org/abs/1105.3419 ER - TY - JOUR T1 - Ion-trap simulation of the quantum phase transition in an exactly solvable model of spins coupled to bosons JF - Phys. Rev. A Y1 - 2010 A1 - Giorgi, Gian Luca A1 - Paganelli, Simone A1 - Galve, Fernando KW - Quantum Physics AB - It is known that arrays of trapped ions can be used to efficiently simulate a variety of many-body quantum systems. Here we show how it is possible to build a model representing a spin chain interacting with bosons that is exactly solvable. The exact spectrum of the model at zero temperature and the ground-state properties are studied. We show that a quantum phase transition occurs when the coupling between spins and bosons reaches a critical value, which corresponds to a level crossing in the energy spectrum. Once the critical point is reached, the number of bosonic excitations in the ground state, which can be assumed as an order parameter, starts to be different from zero. The population of the bosonic mode is accompanied by a macroscopic magnetization of the spins. This double effect could represent a useful resource for phase transition detection since a measure of the phonon can give information about the phase of the spin system. A finite-temperature phase diagram is also given in the adiabatic regime. VL - 81 ER - TY - JOUR T1 - Optimized electron propagation on a quantum chain by a topological phase JF - Fortschritte der Physik Y1 - 2009 A1 - Paganelli, Simone A1 - Giorgi, G. L. A1 - de Pasquale, F. AB - We study the quantum diffusion of an electron in a quantum chain starting from an initial state localized around a given site. As the wavepacket diffuses, the probability of reconstructing the initial state on another site diminishes drastically with the distance. In order to optimize the state transmission we find that a topological quantum phase can be introduced. The effect of this phase is the reduction of wavepacket spreading together with almost coherent group propagation. In this regime, the electron has a quasi-linear dispersion and high fidelity can be achieved also over large distances in terms of lattice spacing. VL - 57 UR - http://doi.wiley.com/10.1002/prop.200900087 ER - TY - JOUR T1 - Preparation of decoherence-free cluster states with optical superlattices JF - Physical Review A (Atomic, Molecular, and Optical Physics) Y1 - 2009 A1 - Jiang, Liang A1 - Rey, Ana Maria A1 - Romero-Isart, Oriol A1 - Garcia-Ripoll, Juan Jose A1 - Sanpera, Anna A1 - Lukin, Mikhail D. KW - atom-photon collisions KW - ground states KW - optical multilayers KW - quantum optics KW - superlattices VL - 79 UR - http://link.aps.org/abstract/PRA/v79/e022309 http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000079000002022309000001&idtype=cvips&gifs=yes http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PLRAAN000079000002 ER - TY - CONF T1 - Kaonic Quantitative Complementarity and Quantum Erasers T2 - AIP Conference Proceedings Y1 - 2007 A1 - Bramon, Albert A1 - Garbarino, G. A1 - Hiesmayr, B. C. JF - AIP Conference Proceedings VL - 962 UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APCPCS000962000001000242000001&idtype=cvips&gifs=yes ER - TY - JOUR T1 - Predicting Spinor Condensate Dynamics from Simple Principles JF - Physical Review Letters Y1 - 2007 A1 - Moreno-Cardoner, M. A1 - Mur-Petit, J. A1 - Guilleumas, M. A1 - Polls, Artur A1 - Sanpera, Anna A1 - Lewenstein, Maciej KW - Bose-Einstein condensation KW - entropy VL - 99 UR - http://link.aps.org/abstract/PRL/v99/e020404 ER - TY - JOUR T1 - Quantum Mechanics with Neutral Kaons JF - Acta Physica Polonica B Y1 - 2007 A1 - Bramon, Albert A1 - Garbarino, G. A1 - Hiesmayr, B. C. VL - 38 UR - http://arxiv.org/abs/hep-ph/0703152 ER - TY - JOUR T1 - Quantum ratchets for quantum communication with optical superlattices JF - Physical Review A (Atomic, Molecular, and Optical Physics) Y1 - 2007 A1 - Romero-Isart, Oriol A1 - Garcia-Ripoll, Juan Jose KW - atom-photon collisions KW - optical modulation KW - quantum entanglement KW - quantum optics KW - superlattices VL - 76 UR - http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PLRAAN000076000005052304000001&idtype=cvips&prog=normal ER - TY - JOUR T1 - Bell’s Inequality Tests with Meson–Antimeson Pairs JF - Foundations of Physics Y1 - 2006 A1 - Bramon, Albert A1 - Escribano, Rafel A1 - Garbarino, G. KW - bell inequalities AB - Recent proposals to test Bell’s inequalities with entangled pairs of pseudoscalar mesons are reviewed. This includes pairs of neutral kaons or B-mesons and offers some hope to close both the locality and the detection loopholes. Specific difficulties, however, appear thus invalidating most of those proposals. The best option requires the use of kaon regeneration effects and could lead to a successful test if moderate K0 and k̄0 detection efficiencies are achieved. VL - 36 UR - http://www.springerlink.com/content/2028326rqh24qgk6/fulltext.pdf ER - TY - JOUR T1 - Dynamics of F = 1 [sup 87]Rb condensates at finite temperatures JF - Physical Review A (Atomic, Molecular, and Optical Physics) Y1 - 2006 A1 - Mur-Petit, J. A1 - Guilleumas, M. A1 - Polls, Artur A1 - Sanpera, Anna A1 - Lewenstein, Maciej A1 - Bongs, K. A1 - Sengstock, K. KW - atom optics KW - atom-photon collisions KW - Bose-Einstein condensation KW - radiation pressure KW - rubidium KW - spin dynamics KW - vectors VL - 73 UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000073000001013629000001&idtype=cvips&gifs=yes ER - TY - JOUR T1 - Kaonic Quantum Erasers at KLOE 2: "Erasing the Present, changing the Past'' JF - arXiv Y1 - 2006 A1 - Bramon, Albert A1 - Garbarino, G. A1 - Hiesmayr, B. H KW - Quantum Physics AB - Neutral kaons are unique quantum systems to show some of the most puzzling peculiarities of quantum mechanics. Here we focus on a quantitative version of Bohr's complementary principle and on quantum marking and eraser concepts. In detail we show that neutral kaons (1) are kind of double slit devices encapsulating Bohr's complementarity principle in a simple and transparent way, and (2) offer marking and eraser options which are not afforded by other quantum systems and which can be performed at the DAPHNE machine. UR - http://www.arxiv.org/pdf/hep-ph/0609314.pdf http://arxiv.org/abs/hep-ph/0609314 ER - TY - JOUR T1 - Optimal full estimation of qubit mixed states JF - Physical Review A (Atomic, Molecular, and Optical Physics) Y1 - 2006 A1 - Bagan, Emili A1 - Ballester, M. A. A1 - Gill, R. D. A1 - Monras, Alex A1 - Muñoz-Tapia, Ramon KW - mixed states KW - probability KW - state estimation VL - 73 UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000073000003032301000001&idtype=cvips&gifs=yes ER - TY - JOUR T1 - Separable Measurement Estimation of Density Matrices and its Fidelity Gap with Collective Protocols JF - Physical Review Letters Y1 - 2006 A1 - Bagan, Emili A1 - Ballester, M. A. A1 - Gill, R. D. A1 - Muñoz-Tapia, Ramon A1 - Romero-Isart, Oriol KW - mixed states KW - state estimation VL - 97 UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000097000013130501000001&idtype=cvips&gifs=yes ER - TY - JOUR T1 - Bell's inequality tests: from photons to B-mesons JF - Journal of Modern Optics Y1 - 2005 A1 - Bramon, Albert A1 - Escribano, Rafel A1 - Garbarino, G. VL - 52 UR - http://dx.doi.org/10.1080/09500340500072893 ER - TY - JOUR T1 - Active and passive quantum erasers for neutral kaons JF - Physical Review A Y1 - 2004 A1 - Bramon, A. A1 - Garbarino, G. A1 - Hiesmayr, B. VL - 69 UR - http://pra.aps.org/abstract/PRA/v69/i6/e062111 ER - TY - JOUR T1 - Experimental Detection of Multipartite Entanglement using Witness Operators JF - Physical Review Letters Y1 - 2004 A1 - Bourennane, Mohamed A1 - Eibl, Manfred A1 - Kurtsiefer, Christian A1 - Gaertner, Sascha A1 - Weinfurter, Harald A1 - Gühne, Otfried A1 - Hyllus, Philipp A1 - Bruß, Dagmar A1 - Lewenstein, Maciej A1 - Sanpera, Anna VL - 92 UR - http://prl.aps.org/abstract/PRL/v92/i8/e087902 ER - TY - CHAP T1 - Passive Quantum Erasure for Neutral Kaons T2 - Symmetries in Gravity and Field Theory Y1 - 2004 A1 - Bramon, Albert A1 - Garbarino, G. A1 - Hiesmayr, B. C. ED - Aldaya, V. ED - Cervero, J. M. JF - Symmetries in Gravity and Field Theory PB - Ediciones Universidad de Salamanca CY - Salamanca UR - http://arxiv.org/abs/quant-ph/0404086 ER - TY - JOUR T1 - Quantitative complementarity in two-path interferometry JF - Physical Review A Y1 - 2004 A1 - Bramon, A. A1 - Garbarino, G. A1 - Hiesmayr, B. VL - 69 UR - http://pra.aps.org/abstract/PRA/v69/i2/e022112 ER - TY - JOUR T1 - Quantum Marking and Quantum Erasure for Neutral Kaons JF - Physical Review Letters Y1 - 2004 A1 - Bramon, A. A1 - Garbarino, G. A1 - Hiesmayr, B. VL - 92 UR - http://prl.aps.org/abstract/PRL/v92/i2/e020405 ER - TY - JOUR T1 - Violation of a Bell inequality in particle physics experimentally verified? JF - Physics Letters A Y1 - 2004 A1 - Bertlmann, R. A. A1 - Bramon, Albert A1 - Garbarino, G. A1 - Hiesmayr, B. C. KW - Bell inequality KW - Entanglement AB - Relevant aspects for testing Bell inequalities with entangled meson–antimeson systems are analyzed. In particular, we argue that the results of Go [J. Mod. Opt. 51 (2004) 991], which nicely illustrate the quantum entanglement of B-meson pairs, cannot be considered as a Bell-test refuting local realism. VL - 332 UR - http://www.sciencedirect.com/science?\_ob=ArticleURL&\_udi=B6TVM-4DK6240-1&\_user=1517286&\_coverDate=11%2F22%2F2004&\_rdoc=1&\_fmt=high&\_orig=search&\_sort=d&\_docanchor=&view=c&\_searchStrId=1201715030&\_rerunOrigin=google&\_acct=C000053449&\_version=1 ER - TY - CHAP T1 - Entanglement properties of composite quantum systems T2 - Quantum Information Processing Y1 - 2003 A1 - Eckert, Kai A1 - Guhne, O. A1 - Hulpke, Florian A1 - Hyllus, Philipp A1 - Korbicz, J. A1 - Mompart, Jordi A1 - Bruss, Dagmar A1 - Lewenstein, Maciej A1 - Sanpera, Anna ED - Leuchs, G. ED - Beth, T. JF - Quantum Information Processing PB - Wilew-VCH CY - Berlin SN - 352740371X ER - TY - JOUR T1 - Experimental detection of entanglement via witness operators and local measurements JF - Journal of Modern Optics Y1 - 2003 A1 - Gühne, Otfried A1 - Hyllus, Philipp A1 - Bruss, Dagmar A1 - Ekert, Artur K. A1 - Lewenstein, Maciej A1 - Macchiavello, Chiara A1 - Sanpera, Anna VL - 50 UR - http://www.informaworld.com/smpp/36433790-99697256/content\~{}db=all\~{}content=a713826204 ER - TY - JOUR T1 - Quantitative duality and neutral kaon interferometry JF - The European Physical Journal C - Particles and Fields Y1 - 2003 A1 - Bramon, A. A1 - Garbarino, Gianni A1 - Hiesmayr, B. C. AB - A quantitative formulation of Bohr&\#8217;s complementarity principle and interferometric duality is discussed and applied to the neutral kaon system. Recent measurements by the CPLEAR Collaboration can be easily interpreted in terms of neutral kaon interferometry, illustrating and confirming those basic principles of quantum mechanics. The subject can be further investigated at the operational \$\backslash phi\$ -factory Daphne. VL - 32 UR - http://www.springerlink.com/content/4l12acw6kn9xkfbt ER - TY - CONF T1 - Quantitative duality and quantum erasure for neutral kaons T2 - eConf C0309101:THWP005 Y1 - 2003 A1 - Bramon, Albert A1 - Garbarino, Gianni A1 - Hiesmayr, Beatrix C. JF - eConf C0309101:THWP005 ER - TY - JOUR T1 - Detection of entanglement with few local measurements JF - Physical Review A Y1 - 2002 A1 - Gühne, O. A1 - Hyllus, P. A1 - Bruß, D. A1 - Ekert, A. A1 - Lewenstein, M. A1 - Macchiavello, C. A1 - Sanpera, A. VL - 66 UR - http://pra.aps.org/abstract/PRA/v66/i6/e062305 ER - TY - JOUR T1 - Novel Bell’s Inequalities for Entangled K0K¯0 Pairs JF - Physical Review Letters Y1 - 2002 A1 - Bramon, Albert A1 - Garbarino, Gianni VL - 88 UR - http://prl.aps.org/abstract/PRL/v88/i4/e040403 ER - TY - JOUR T1 - Test of Local Realism with Entangled Kaon Pairs and without Inequalities JF - Physical Review Letters Y1 - 2002 A1 - Bramon, Albert A1 - Garbarino, Gianni VL - 89 UR - http://prl.aps.org/abstract/PRL/v89/i16/e160401 ER - TY - JOUR T1 - Feynman's path-integral approach for intense-laser-atom interactions JF - Science (New York, N.Y.) Y1 - 2001 A1 - Salieres, P. A1 - Carre, B. A1 - Le Deroff, L. A1 - Grasbon, F. A1 - Paulus, G. G. A1 - Walther, H. A1 - Kopold, R. A1 - Becker, W. A1 - Milosevic, D. B. A1 - Sanpera, A. A1 - Lewenstein, M. AB - Atoms interacting with intense laser fields can emit electrons and photons of very high energies. An intuitive and quantitative explanation of these highly nonlinear processes can be found in terms of a generalization of classical Newtonian particle trajectories, the so-called quantum orbits. Very few quantum orbits are necessary to reproduce the experimental results. These orbits are clearly identified, thus opening the way for an efficient control as well as previously unknown applications of these processes. VL - 292 UR - http://www.sciencemag.org/cgi/content/abstract/292/5518/902 ER -