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

查看全文 作　　者：Mario Arnolfo [1]Ciampini;Adeline [1,4]Orieux;Stefano [1,5]Paesani;Fabio [1]Sciarrino;Giacomo [2,3]Corrielli;Andrea [2,3]Crespi;Roberta [2,3]Ramponi;Roberto [2,3]Osellame;Paolo [1]Mataloni

机构地区：[1]Dipartimento di Fisica-Sapienza Universitàdi Roma,I-00185 Roma,Italy;[2]Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche(IFN-CNR),I-20133 Milano,Italy;[3]Dipartimento di Fisica-Politecnico di Milano,I-20133 Milano,Italy;[4]Télécom ParisTech,CNRS-LTCI,46 rue Barrault,F-75634 Paris CEDEX 13,France;[5]Centre for Quantum Photonics H H Wills Physics Laboratory and Department of Electrical and Electronic Engineering,University of Bristol,Merchant Ventures Building,Woodland Road,Bristol BS81UB,UK.

出　　处：《Light(Science & Applications)》索引2016年第5卷第1期,共6页

基　　金：supported by the European Union through the project FP7-ICT-2011-9-600838(QWAD Quantum Waveguides Application and Development;www.qwad-project.eu);by FIRB,Futuro in Ricerca HYTEQ. 摘　　要：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 state.Hyperentangled photon states(that is,states showing entanglement in multiple DOFs)have demonstrated significant implications for both fundamental physics tests and quantum communication and computation.Increasing 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 chip.We demonstrate the contextual use of path and polarization qubits propagating within an integrated quantum circuit.We 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 model.Our 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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Path-polarization hyperentangled and cluster states of photons on a chip

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