Journal
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
Volume 60, Issue 9, Pages 3494-3513Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-021-04920-y
Keywords
Distributed quantum circuits; Teleportation; Communication cost; Optimization
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Distributed quantum systems are a well-known method to increase processing power in the quantum processing world by optimizing communication between limited-capacity quantum circuits. This study introduces an efficient method based on quantum gate commuting to reduce the number of teleportations required in performing distributed quantum circuits (DQCs), resulting in a significant decrease in teleportations and execution time.
Distributed quantum system is a well-known method to overcome the problems of designing and manufacturing large quantum systems to achieve higher processing power in the world of quantum processing. In distributed quantum computing, a number of limited-capacity quantum circuits communicating with each other through communication channels operate as a large quantum circuit. The most essential step in designing a distributed quantum system is to optimize the communication between the components to reduce the overhead cost of communications. In this study, based on the commuting of quantum gates, an efficient method is proposed to reduce the number of teleportations required to perform distributed quantum circuits (DQCs). The results obtained from the evaluation of our method on benchmark circuits indicate an impressive decrease in the number of teleportations and a significant reduction in the execution time compared to the present methods.
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