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 | |
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