On chip analysis of path-polarization hyperentangled cluster photon states

M. A. Ciampini, A. Orieux, S. Paesani, C. Vigliar, V. Cimini, G. Corrielli, A. Crespi, R. Ramponi, R. Osellame, M. Paternostro, M. Barbieri, P. Mataloni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Encoding many qubits in different degrees of freedom (DOFs) of single photons is one of the routes towards enlarging the Hilbert space spanned by a photonic quantum state. Hyperentangled photon states (i.e. 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 set-up stability. This motivates the development of technologies allowing the control of different photonic DOFs on a chip. Femtosecond laser writing on a glass makes possible to use both path and polarization of photon states enabling precise control of both degrees of freedom. We demonstrate the contextual use of path and polarization qubits propagating within a laser written integrated quantum circuit and use them to engineer a four qubit hyperentangled cluster state. We also characterized the cluster state and exploited it to perform the Grover's search algorithm following the one-way quantum computation model. In addition, we tested the non-local properties of the cluster state by using multipartite non-locality tests.

Original languageEnglish
Title of host publicationAdvances in Photonics of Quantum Computing, Memory, and Communication X
PublisherSPIE - The International Society for Optical Engineering
Number of pages8
ISBN (Electronic)9781510606777
Publication statusPublished - 20 Feb 2017
EventAdvances in Photonics of Quantum Computing, Memory, and Communication X 2017 - San Francisco, United States
Duration: 31 Jan 201702 Feb 2017

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


ConferenceAdvances in Photonics of Quantum Computing, Memory, and Communication X 2017
Country/TerritoryUnited States
CitySan Francisco


  • Cluster states
  • Hyperentanglement
  • Integrated Photonics
  • Non-local correlations.
  • Quantum Information
  • Quantum Optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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