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20/06/2012, 10:00
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Dr Catalina Oana Curceanu (LNF), Umberto Dosselli (PD)20/06/2012, 10:30
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Dr Stefano Olivares (Dipartimento di Fisica - Universita' degli Studi di Milano)20/06/2012, 10:45The measurement problem for the optical phase has been traditionally attacked for noiseless schemes or in the presence of amplitude or detection noise. In this presentation we address, both theoretically and experimentally, the estimation of a a phase shift in the presence of phase diffusion and, in particular, of large phase diffusion. We present a nearly optimal interferometric scheme based...Go to contribution page
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Prof. FRANCESCO DE MARTINI (Accademia dei Lincei)20/06/2012, 11:35Since the 1935 proposal by Einstein Podolsky and Rosen the riddle of quantum nonlocality, today demonstrated by innumerable experiments, has been a cause of concern and confusion within the debate over the foundations of quantum mechanics. The talk tackles the problem by a non relativistic approach based on the Weyl's conformal differential geometry applied to the Hamilton-Jacobi solution of...Go to contribution page
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Dr Jyrki Piilo (Turku Centre for Quantum Physics, University of Turku, Finland)20/06/2012, 12:05We present non-Markovian quantum jump description of open system dynamics and discuss how this describes quantum memory effects. Furthermore, we show how to quantify non-Markovianity of open system with a trace distance based measure and information flow concluding with some experimental applications.Go to contribution page
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Dr ward struyve (university of leuven)20/06/2012, 12:35Semi-classical approximations to quantum theory describe part of the system classically and part quantum mechanically. In the usual approach, one considers the classical system to move under a mean force, obtained by averaging over the quantum system. We consider an alternative approach based on de Broglie-Bohm theory. This approach has shown to yield better results than the mean force...Go to contribution page
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Andrea Smirne (MI)20/06/2012, 14:30In recent research, a great effort has been put into the study and understanding of non-Markovian features within the dynamics of open quantum systems. At the same time, quantum non-Markovianity has been defined and quantified in terms of quantum dynamical maps, using either a divisibility property or the behavior of the trace distance between pairs of reduced states evolved from different...Go to contribution page
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Dr Gabriel Leon (University of Trieste)20/06/2012, 15:00The quantum fluctuations of the inflationary field are currentlyconsidered as the seeds for cosmic structure and their traces are observed in the cosmic radiation background. However, this paradigm faces a conceptual difficulty in that the proposal does not contain any mechanism capable of breaking the homogeneity and isotropy characterizing the primordial (quantum) state of the...Go to contribution page
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Guglielmo Maria Tino (FI)20/06/2012, 15:30G. M. Tino Dipartimento di Fisica e Astronomia and LENS Laboratory Università degli Studi di Firenze Istituto Nazionale di Fisica Nucleare, Sezione di Firenze via Sansone 1, Sesto Fiorentino (Firenze), Italy E-mail: guglielmo.tino@fi.infn.it I will discuss experiments we are conducting using cold atom interferometry for precision tests of gravitational physics. In particular, I will...Go to contribution page
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Dr Emanuele Taralli (INRIM)20/06/2012, 16:20During the last years, Transition-Edge Sensors (TESs) have found an ever more growing number of applications as single photon number resolving detectors in fields as quantum optics [1][2], telecommunication [3][4][5], quantum metrology [6][7][8] and quantum technologies [9]. The most important TES characteristics for the quantum land's inhabitant are the negligible numbers of dark-counts,...Go to contribution page
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Luca Ferialdi (TS)20/06/2012, 16:50Stochastic Schroedinger equations (SSEs) are a powerful mathematical formalism which allow for insight into physical systems, like e.g. collapse models.These equations can also be used to study open quantum systems, since they allow for a stochastic unravelling, where the environment is described by a noise. The advantage of this approach is that it allows for analytic treatment of...Go to contribution page
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Mr Nicola Vona (LMU Munich)21/06/2012, 09:30Although time measurements are very often performed in experiments, their theoretical description is largely unclear. Several proposals have been put forward, two of which will be presented in this talk: the one resulting from the application of the orthodox quantum formalism, and that corresponding to the use of Bohmian Mechanics. A situation in which these two approaches lead to different...Go to contribution page
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Damiano Marian (GE)21/06/2012, 10:00The aim of the talk is to give an overview of the present status of numerical methods to solve quantum problems via Bohmian trajectories. Particularly I will focus on three relevant approaches for the numerical solution of the Time Dependent Schroedinger Equation (TDSE). The first, called Quantum Trajectory Methods (QTM), developed by Wyatt [1], provides a precise description of quantum...Go to contribution page
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Dr Ivano Ruo Berchera (INRIM)21/06/2012, 10:30The discrimination between quantum and classical states, besides its very important and deep conceptual relevance, has also recently received much attention due to the development of quantum technologies. On one side, it represents a fundamental point for the studies concerning the transition between quantum and classical world, one of the most intriguing research sectors in the foundations of...Go to contribution page
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Paolo Perinotti (PV)21/06/2012, 11:30We will briefly review the operational-probabilistic framework in which quantum theory can be formulated as a theory of information processing. The six principles constituting the axioms that lead to the Hilbert space formalism will be introduced. Relaxing any of these principles opens a wider and largely unexplored scenario, in which alternate theories are allowed. The possibility of...Go to contribution page
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Dr XAVIER ORIOLS (UNIVERSITAT AUTONOMA DE BARCELONA)21/06/2012, 12:00X.Oriols, F. L.Traversa, G. Albareda Departament d’ Enginyeria Electronica, Universitat Autonoma de Barcelona, 08193, Bellaterra, SPAIN Electronic industry is pushing devices into the few-nanometer (mesoscopic) limit, where mainly pure quantum e_ects determine the current owing through them. However, the accurate prediction of their multi-time current correlations is a very challenging...Go to contribution page
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Sandro Donadi (TS)21/06/2012, 12:30Collapse models are phenomenological models developed to solve the measurement problem in Quantum Mechanics. In these models one assumes that the evolution of the wave function is driven by an equation obtained introducing new non-linear and stochastic terms in the Schr?dinger equation. Accordingly, collapse models make different predictions than Quantum Mechanics, so they can be tested. A...Go to contribution page
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Antonio Di Domenico (ROMA1)21/06/2012, 14:30The neutral kaon doublet is one of the most intriguing systems in nature. Entangled pairs of neutral K mesons produced in ? decays offers a unique possibility to perform very precise tests of fundamental discrete symmetries in nature, as well as of basic principles of quantum mechanics. The most recent results will be reviewed and perspectives in the field will be discussed.Go to contribution page
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Michele Arzano (ROMA1)21/06/2012, 15:00Relativistic particles with momentum space described by a group manifold provide a very interesting link between gravity, quantum group symmetries and non-commutative field theories. I will discuss how group valued momenta emerge in the context of three dimensional Einstein gravity and describe the related non-commutative field theory. As an application I will introduce a non-commutative...Go to contribution page
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Dr FABIO SCIARRINO (Dipartimento di fisica)21/06/2012, 15:30Quantum communication employs the counter-intuitive features of quantum physics to perform tasks that are impossible in the classical world. It is crucial for testing the foundations of quantum theory and promises to revolutionize our information and communication technologies. However, for two or more parties to execute even the simplest quantum transmission, they must establish, and...Go to contribution page
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Ms Sandra Eibenberger (VCQ, University of Vienna)21/06/2012, 16:20Sandra Eibenberger1,*, Stefan Gerlich1, Jens Tüxen², Marcel Mayor²,³, and Markus Arndt1 1. Vienna Center for Quantum Science and Technology, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria 2. Department of Chemistry, University of Basel, St. Johannsring 19, CH-4056 Basel, Switzerland 3. Karlsruhe Institute of Technology (KIT), Institute for Nanotechnology, P.O. Box 3640,...Go to contribution page
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Alessandro Rizzo (LNF)21/06/2012, 16:50The Spontaneous Emission of radiation by free electrons phenomenon arises from the direct interaction of a free electron and a fluctuating scalar field, postulated in the framework of Spontaneous Collapse theories as a trigger to obtain the system wave function collapse and solve the dualism problem. The important role played by this new phenomenon in checking such class of theories is...Go to contribution page
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Giacomo D'Ariano (PV)22/06/2012, 09:30Quantum cellular automata extend Quantum Field Theory (QFT) to include localized states and observables. They can provide a simple unified framework to describe the Planck scale, the ultra-relativistic regime, along with the usual QFT. The latter is recovered in the "field-limit" of the automaton, for infinitely many time-steps and space-periods, the period of the automaton representing the...Go to contribution page
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Prof. Klaus Hornberger (University of Duisburg-Essen)22/06/2012, 10:00Can one understand the emergence of classical physics in a quantum mechanical framework? An important step to answer this question is to explain the origin ofsuper-selection rules observed at macroscopic scales. Two specific cases will be discussed, based on microscopically realistic master equations. In the first part, I will show how the distinction and stability of chiral molecular...Go to contribution page
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Dr marco genovese (INRIM)22/06/2012, 10:30M.Genovese,1 G. Brida, 1 I. P.Degiovanni, 1 A.Meda, 1 S.Olivares, 2 M.G. A. Paris 2 1 INRIM, Strada delle Cacce 91, I-10135 Torino,Italy 2 Dipartimento di Fisica, Universit`adegliStudi di Milano, I-20133 Milano, Italy Optical correlations at the quantum level represent a resource for the development of technologies overcoming the limits of the classical physics, with very promising...Go to contribution page
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22/06/2012, 11:30
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Carlo Guaraldo (LNF)22/06/2012, 12:00The increasing difficulty of the agencies (Universities and Research Institutes) in financing fundamental research makes more and more compelling to look around for external sources,in primis those made available by the European Union. These opportunities are often unknown, in many cases considered too "aliens", for a supposed difficulty of approach, in other (few) cases object of...Go to contribution page
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22/06/2012, 12:30
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