Experimental characterization of a telecommunications-band quantum controlled-not gate

Monika Patel; Joseph B. Altepeter; Matthew A. Hall; Milja Medic; Prem Kumar

doi:10.1109/JSTQE.2009.2025704

Experimental characterization of a telecommunications-band quantum controlled-not gate

Monika Patel^*, Joseph B. Altepeter, Matthew A. Hall, Milja Medic, Prem Kumar

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The quantum controlled-not gate is an example of the maximally entangling gate, which is a broad class of operations that are necessary for scalable linear optics quantum computation. Here, we characterize a telecommunications- wavelength (1550 nm) quantum controlled- not gate, and for the first time, experimentally bound its process fidelity by measuring its operation in two complementary polarization bases. The gates final process fidelity F is given by 91% ≤ F ≤ 95%.

Original language	English (US)
Article number	5325885
Pages (from-to)	1685-1693
Number of pages	9
Journal	IEEE Journal on Selected Topics in Quantum Electronics
Volume	15
Issue number	6
DOIs	https://doi.org/10.1109/JSTQE.2009.2025704
State	Published - Nov 1 2009

Keywords

Controlled-not (cnot)
Entangling gate
Process tomography

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

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AB - The quantum controlled-not gate is an example of the maximally entangling gate, which is a broad class of operations that are necessary for scalable linear optics quantum computation. Here, we characterize a telecommunications- wavelength (1550 nm) quantum controlled- not gate, and for the first time, experimentally bound its process fidelity by measuring its operation in two complementary polarization bases. The gates final process fidelity F is given by 91% ≤ F ≤ 95%.

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