High-fidelity quantum gates for OAM qudits on quantum memory
- URL: http://arxiv.org/abs/2105.12178v1
- Date: Tue, 25 May 2021 19:13:27 GMT
- Title: High-fidelity quantum gates for OAM qudits on quantum memory
- Authors: E.A. Vashukevich, T.Yu. Golubeva, Yu.M. Golubev
- Abstract summary: We propose a method for implementing single-qudit gates for qudits based on light modes with orbital angular momentum.
We show that the considered gates provide an extremely high level of fidelity of single-qudit transformations.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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. Method for
logical qudits encoding, which ensures the quasi-cyclicity of operations, is
introduced. Based on the protocol for converting the orbital angular momentum
of light in the Raman quantum memory scheme [Vashukevich E.A. et. al. PRA, 101,
033830 (2020)], 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.
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