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Article

Arbitrary Configurable 20-Channel Coincidence Counting Unit for Multi-Qubit Quantum Experiment

1
Center for Quantum Information, Korea Institute of Science and Technology, Seoul 02792, Korea
2
Division of Nano & Information Technology, Korea Institute of Science and Technology School, Korea University of Science and Technology, Seoul 02792, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Masum Hossain
Electronics 2021, 10(5), 569; https://doi.org/10.3390/electronics10050569
Received: 25 January 2021 / Revised: 23 February 2021 / Accepted: 24 February 2021 / Published: 28 February 2021
(This article belongs to the Special Issue Microprocessor and Integrated Circuits)
This paper presents a 20-channel coincidence counting unit (CCU) using a low-end field-programmable gate array (FPGA). The architecture of the CCU can be configured arbitrarily to measure from twofold to twentyfold coincidence counts thanks to a multifold controllable architecture, which can be easily manipulated by a graphical user interface (GUI) program. In addition, it provides up to 20 of each input signal count simultaneously. The experimental results show twentyfold coincidence counts with the resolution occurring in a less than 0.5 ns coincidence window. This CCU has appropriate characteristics for various quantum optics experiments using multi-photon qubits. View Full-Text
Keywords: coincidence counting unit; coincidence measurement; FPGA coincidence counting unit; coincidence measurement; FPGA
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MDPI and ACS Style

Park, B.K.; Kim, Y.-S.; Cho, Y.-W.; Moon, S.; Han, S.-W. Arbitrary Configurable 20-Channel Coincidence Counting Unit for Multi-Qubit Quantum Experiment. Electronics 2021, 10, 569. https://doi.org/10.3390/electronics10050569

AMA Style

Park BK, Kim Y-S, Cho Y-W, Moon S, Han S-W. Arbitrary Configurable 20-Channel Coincidence Counting Unit for Multi-Qubit Quantum Experiment. Electronics. 2021; 10(5):569. https://doi.org/10.3390/electronics10050569

Chicago/Turabian Style

Park, Byung Kwon, Yong-Su Kim, Young-Wook Cho, Sung Moon, and Sang-Wook Han. 2021. "Arbitrary Configurable 20-Channel Coincidence Counting Unit for Multi-Qubit Quantum Experiment" Electronics 10, no. 5: 569. https://doi.org/10.3390/electronics10050569

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