Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics

Taira Giordani*, Luca Innocenti, Alessia Suprano, Emanuele Polino, Mauro Paternostro, Nicolo Spagnolo, Fabio Sciarrino, Alessandro Ferraro

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
66 Downloads (Pure)


The generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. Achieving such non-classical high-dimensional resources will potentially unlock enhanced capabilities for quantum cryptography, communication and computation. We propose a protocol that is able to attain entangled states of d-dimensional systems through a quantum-walk (QW)-based transfer & accumulate mechanism involving coin and walker degrees of freedom. The choice of investigating QW is motivated by their generality and versatility, complemented by their successful implementation in several physical systems. Hence, given the cross-cutting role of QW across quantum information, our protocol potentially represents a versatile general tool to control high-dimensional entanglement generation in various experimental platforms. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.

Original languageEnglish
Article number023012
Number of pages15
JournalNew Journal of Physics
Issue number2
Publication statusPublished - 16 Feb 2021

Bibliographical note

Funding Information:
Original content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Leverhulme Trust Research Project Grant UltraQute RGP-2018-266 Sapienza Universit� di Roma via grant for joint research project 2289/2018 Prot. n.50074 ERC Advanced Grant QU-BOSS 884676 PRIN 2017 (Progetto di Ricerca di Interesse Nazionale): project QUSHIP (2017SRNBRK) 387439 COST Action CA15220 Royal Society Wolfson Research Fellowship scheme RSWF\R3\183013 H2020 Collaborative Project TEQ 15/IA/2864 yes � 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft Creative Commons Attribution 4.0 licence

Publisher Copyright:
© 2021 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.

Copyright 2021 Elsevier B.V., All rights reserved.


  • entanglement accumulation
  • entanglement transfer
  • high-dimensional entanglement
  • quantum walks

ASJC Scopus subject areas

  • General Physics and Astronomy


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