Experimental Demonstration of Efficient High-dimensional Quantum Gates with Orbital Angular Momentum

Quantum gates are essential for the realization of quantum computer and have been implemented in various types of two-level systems. However, high-dimensional quantum gates are rarely investigated both theoretically and experimentally even that high-dimensional quantum systems exhibit remarkable adv...

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Published inarXiv.org
Main Authors Wang, Yunlong, Shihao Ru, Wang, Feiran, Zhang, Pei, Li, Fuli
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 22.11.2021
Subjects
Angular momentum
Gates (circuits)
Hilbert space
Photons
Quantum computers
Quantum computing
Quantum phenomena
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Abstract Quantum gates are essential for the realization of quantum computer and have been implemented in various types of two-level systems. However, high-dimensional quantum gates are rarely investigated both theoretically and experimentally even that high-dimensional quantum systems exhibit remarkable advantages over two-level systems for some quantum information and quantum computing tasks. Here we experimentally demonstrate the four-dimensional X gate and its unique higher orders with the average conversion efficiency 93\%. All these gates are based on orbital-angular-momentum degree of freedom of single photons. Besides, a set of controlled quantum gates is implemented by use of polarization degree of freedom. Our work is an important step towards the goal of achieving arbitrary high-dimensional quantum circuit and paves a way for the implementation of high-dimensional quantum communication and computation.
AbstractList Quantum gates are essential for the realization of quantum computer and have been implemented in various types of two-level systems. However, high-dimensional quantum gates are rarely investigated both theoretically and experimentally even that high-dimensional quantum systems exhibit remarkable advantages over two-level systems for some quantum information and quantum computing tasks. Here we experimentally demonstrate the four-dimensional X gate and its unique higher orders with the average conversion efficiency 93\%. All these gates are based on orbital-angular-momentum degree of freedom of single photons. Besides, a set of controlled quantum gates is implemented by use of polarization degree of freedom. Our work is an important step towards the goal of achieving arbitrary high-dimensional quantum circuit and paves a way for the implementation of high-dimensional quantum communication and computation.
Author Wang, Feiran
Wang, Yunlong
Zhang, Pei
Shihao Ru
Li, Fuli
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SubjectTerms Angular momentum
Gates (circuits)
Hilbert space
Photons
Quantum computers
Quantum computing
Quantum phenomena
Title Experimental Demonstration of Efficient High-dimensional Quantum Gates with Orbital Angular Momentum
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