The application of high-dimensional quantum systems (qudits) in quantum computing and communications seems to be a promising avenue due to the possibility of increasing the amount of information encoded in one physical carrier. In this work, we propose a method for implementing single-qudit gates for qudits based on light modes with orbital angular momentum (OAM). Method for logical qudits encoding, which ensures the quasi-cyclicity of operations, is introduced. Based on the protocol for converting the OAM of light in the Raman quantum memory scheme (Vashukevich et al 2020 Phys. Rev. A 101 033830), we show that the considered gates provide an extremely high level of fidelity of single-qudit transformations. We also compare quantum gates' properties for systems of different dimensions and find the optimal conditions for carrying out transformations in the protocol under consideration
Original languageEnglish
Article number025202
JournalLaser Physics Letters
Issue number2
StatePublished - Feb 2022

    Research areas

  • multimodes quantum state, orbital angular momentum, quantum computing, quantum gates, quantum memory, qudit

    Scopus subject areas

  • Instrumentation
  • Physics and Astronomy (miscellaneous)

ID: 91195627