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Path-polarization hyperentangled and cluster states of photons on a chip

Light(Science & Applications) 2016年第1期5卷 836-841页

作者： mario arnolfo ciampini Adeline Orieux Stefano Paesani Fabio Sciarrino Giacomo Corrielli Andrea Crespi Roberta Ramponi Roberto Osellame Paolo Mataloni Dipartimento di Fisica-Sapienza Universitàdi Roma I-00185 RomaItaly Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche(IFN-CNR) I-20133 MilanoItaly Dipartimento di Fisica-Politecnico di Milano I-20133 MilanoItaly Télécom ParisTech CNRS-LTCI46 rue BarraultF-75634 Paris CEDEX 13France Centre for Quantum Photonics H H Wills Physics Laboratory and Department of Electrical and Electronic Engineering University of BristolMerchant Ventures BuildingWoodland RoadBristol BS81UBUK.

Encoding many qubits in different degrees of freedom(DOFs)of single photons is one of the routes toward enlarging the Hilbert space spanned by a photonic quantum *** photon states(that is,states showing entanglement in multiple DOFs)have demonstrated significant implications for both fundamental physics tests and quantum communication and *** the number of qubits of photonic experiments requires miniaturization and integration of the basic elements,and functions to guarantee the setup stability,which motivates the development of technologies allowing the precise control of different photonic DOFs on a *** demonstrate the contextual use of path and polarization qubits propagating within an integrated quantum *** tested the properties of four-qubit linear cluster states built on both DOFs,and we exploited them to perform the Grover's search algorithm according to the one-way quantum computation *** results pave the way toward the full integration on a chip of hybrid multi-qubit multiphoton states.

关键词： hyperentanglement integrated photonics quantum information quantum optics

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Global epidemiology of hepatitis C virus infection: an up-date of the distribution and circulation of hepatitis C virus genotypes

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World Journal of Gastroenterology 2016年第34期22卷 7824-7840页

作者： arnolfo Petruzziello Samantha Marigliano Giovanna Loquercio Anna Cozzolino Carmela Cacciapuoti Laboratory of Virology and Molecular Biology "V.Tridente" IRCCS Italia

AIM To review Hepatitis C virus(HCV) prevalence and genotypes distribution *** We conducted a systematic study which represents one of the most comprehensive effort to quantify global HCV epidemiology,using the best available published data between 2000 and 2015 from 138 countries(about 90% of the global population),grouped in 20 geographical areas(with the exclusion of Oceania),as defined by the Global Burden of Diseases project(GBD). Countries for which we were unable to obtain HCV genotype prevalence data were excluded from calculations of regional proportions,although their populations were included in the total population size of each region when generating regional genotype prevalence *** Total global HCV prevalence is estimated at 2.5%(177.5 million of HCV infected adults),ranging from 2.9% in Africa and 1.3% in Americas,with a global viraemic rate of 67%(118.9 million of HCV RNA positive cases),varying from 64.4% in Asia to 74.8% in Australasia. HCV genotype 1 is the most prevalent worldwide(49.1%),followed by genotype 3(17.9%),4(16.8%) and 2(11.0%). Genotypes 5 and 6 are responsible for the remaining < 5%. While genotypes 1 and 3 are common worldwide,the largest proportion of genotypes 4 and 5 is in lower-income countries. Although HCV genotypes 1 and 3 infections are the most prevalent globally(67.0% if considered together),other genotypes are found more commonly in lowerincome countries where still account for a significant proportion of HCV *** A more precise knowledge of HCV genotype distribution will be helpful to best inform national healthcare models to improve access to new treatments.

关键词： Hepatitis C virus genotype Epidemiology Hepatitis C virus Hepatitis C virus prevalence Hepatitis C virus infections Viraemia

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