1,721,224 research outputs found
Dissipative Engineering of Gaussian Entangled States in Harmonic Lattices with a Single-Site Squeezed Reservoir
No full textWe study the dissipative preparation of many-body entangled Gaussian states in bosonic lattice models which could be relevant for quantum technology applications. We assume minimal resources, represented by systems described by particle-conserving quadratic Hamiltonians, with a single localized squeezed reservoir.We show that in this way it is possible to prepare, in the steady state, the wide class of pure states which can be generated by applying a generic passive Gaussian transformation on a set of equally squeezed modes. This includes nontrivial multipartite entangled states such as cluster states suitable for measurement-based quantum computation
QUANTUM STOCHASTIC RESONANCE IN THE DISSIPATIVE 2-STATE SYSTEM
No full textWe look for stochastic resonance in the very low temperature limit, where a quantum-mechanical treatment is needed. The canonical example of a dissipative double-well potential subject to periodic forcing is studied within the two-state approximation. The cases of both ohmic and superohmic dissipation are investigated in detail
Possibility to generate any Gaussian cluster state by a multimode squeezing transformation
Full text linkGaussian cluster states are ideal infinitely squeezed states. In practice it is possible to construct only approximated version of them with finite squeezing. Here we show how to determine the specific multimode squeezing transformation, which generates a faithful approximation of any given Gaussian cluster state
Le fornaci e le anfore di Albinia. Primi dati su produzioni e scambi dalla costa tirrenica al mondo gallico.
No full textBilancio critico dei dati acquisiti al termine di cinque campagne di scavo ad Albinia e al termine di un Progetto PRIN (2004-2006) coordinato a livello nazionale da Vitali D.
Un'area di 5000 mq esplorata alla sinistra della bassa valle dell'Albegna, un vasto atelier a fornaci di grandi, medie e piccole dimensioni, tre fasi principali di rifacimenti e ristrutturazioni, facies di anfore appartenenti a ciascuna fase; corpus di anfore con bolli epigrafici, ceramiche comuni associate, tipocronolgoia delle forme, elementi di cronologia a partire da scoperte monetali, apporto di informazione e prospettive di indagine da parte dei geofisici, petrografi, botanici, elementi di comparazione con altri ateliers scoperti in Italia meridionale (Giancòla) e settentrioanle (Cattolica), e con aree di diffusione in alto tirreno (relitti subacquei, e prospezioni a terra)
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
La tipologia del tossicodipendente afferente alla struttura pubblica. Indagine sull'attività del SerT di Macerata nell'anno '99.
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