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.
Bibliographical noteFunding 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
© 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
- Physics and Astronomy(all)