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A scheme for distributed quantum search through simultaneous state transfer mechanism
Author(s) -
Gupta M.,
Pathak A.
Publication year - 2007
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.200710265
Subject(s) - nonlinear system , physics , classical mechanics , constitutive equation , metric (unit) , algebraic equation , quantum , quantum mechanics , operations management , finite element method , economics , thermodynamics
Using a quantum network model, we present a scheme for distributed implementation of Grover's algorithm. The proposed scheme can implement a quantum search over data bases stored in different computers. Entanglement is used to carry out different non‐local operations over the spatially distributed quantum computers. A method to transfer the combined state of many qubits over the entanglement and subsequently refreshing the entangled pair is presented. This method of simultaneous state transfer from one computer to the other, is shown to result in a constant communication complexity.