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A general protocol for distributed quantum gates

Authors
  • Sarvaghad-Moghaddam, Moein1
  • Zomorodi, Mariam2, 3
  • 1 Amirkabir University of Technology, Tehran, Iran , Tehran (Iran)
  • 2 Cracow University of Technology, Krakow, Poland , Krakow (Poland)
  • 3 Ferdowsi University of Mashhad, Mashhad, Iran , Mashhad (Iran)
Type
Published Article
Journal
Quantum Information Processing
Publisher
Springer-Verlag
Publication Date
Aug 09, 2021
Volume
20
Issue
8
Identifiers
DOI: 10.1007/s11128-021-03191-0
Source
Springer Nature
Keywords
Disciplines
  • Article
License
Green

Abstract

In distributed quantum computation, quantum remote-controlled gates are used frequently and applied on separate nodes or subsystems of a network. One of the universal and well-known controlled gates is the n-qubit controlled-NOT gate, especially Toffoli gate for the case of three qubits, which are frequently used to synthesize quantum circuits. In this paper, we considered a more general case, an n-qubit controlled-U gate, and present a general protocol for implementing these gates remotely with minimum required resources. Then, the proposed method is applied to implement a Toffoli gate in bipartite and tripartite systems. In this method, we considered cases in which a group of qubits belongs to one subsystem of the network. Then, we improved its consumption resources.

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