Programmable and sequential Gaussian gates in a loop-based single-mode photonic quantum processor
Year: 2021
Type: article
Abstract: A quantum processor to import, process, and export optical quantum states is a common core technology enabling various photonic quantum information processing. However, there has been no photonic processor that is simultaneously universal, scalable, and programmable. Here, we report on an original loop-based single-mode versatile photonic quantum processor that is designed to be universal, scalable, and programmable. Our processor can perform arbitrarily many steps of programmable quantum operations on a given single-mode optical quantum state by time-domain processing in a dynamically controlled loop-based optical circuit. We use this processor to demonstrate programmable single-mode Gaussian gates and multistep squeezing gates. In addition, we prove that the processor can perform universal quantum operations by injecting appropriate ancillary states and also be straightforwardly extended to a multimode processor. These results show that our processor is programmable, scalable, and potentially universal, leading to be suitable for general-purpose applications.
Source: Science Advances
Institutions: The University of Tokyo, Japan Science and Technology Agency
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,500
Funders: Kayamori Foundation of Informational Science Advancement, Ministry of Education, Culture, Sports, Science and Technology, Research Foundation for Opto-Science and Technology, Toray Science Foundation, Japan Society for the Promotion of Science, Precursory Research for Embryonic Science and Technology
OpenAlex ID: W3212176211