Arbitrary unitaries in orbital angular momentum of single photons

Autor(en)

Jaroslav Kysela

Abstrakt

A simple argument is presented that explicitly shows how to construct an arbitrary quantum gate acting on orbital angular momentum (OAM) of single photons. The scheme can be applied to implement subspace multiplexing, where a single high-dimensional OAM qudit represents effectively a stack of multiple independent lower-dimensional qudits. A special subclass of unitaries composed of single-photon controlled gates is studied in detail and notable examples of the general approach are discussed. The generalization of the simple argument leads to the parallelization scheme, which results in the savings of resources. The presented schemes utilize only conventional optical elements and apply not only to single photons but also to classical light.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW)

Journal

EPJ Quantum Technology

Band

9

Anzahl der Seiten

21

ISSN

2662-4400

DOI

https://doi.org/10.1140/epjqt/s40507-022-00142-1

Publikationsdatum

08-2022

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103021 Optik

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Control and Systems Engineering

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/6138a37d-ef0f-4801-96a6-f01673af1a3c