American Journal of Applied Sciences

Quantum Hadamard Gate Implementation Using Planar Lightwave Circuit and Photonic Crystal Structures

Shamsolah Salemian and Shahram Mohammadnejad

DOI : 10.3844/ajassp.2008.1144.1148

American Journal of Applied Sciences

Volume 5, Issue 9

Pages 1144-1148

Abstract

An all optical method has been proposed for quantum Hadamard gate implementation. This quantum gate was realized by using Y-junction beam splitter. Normal modes in waveguides have been used as quantum bit. This all optical gate can be used in quantum computation and communication. The proposed Hadamard gate has potential of being more compact and easily realized compared to other optical implementations. By using planar lightwave circuit in implementation, the width of Yjunction input waveguide, width of each branch, angle of bend and length of bend were obtained 1 micron, 0.75 micron, 45º and 0.75 micron, respectively. By using planar lightwave circuit in implementation, the radius of large air holes and the radius of small holes were obtained 0.2 ands 0.1 micron, respectively. The index of substrate was 1.325. Implementation based on photonic crystal structures and planar lightwave circuit technology was used in integrated optics.

Copyright

© 2008 Shamsolah Salemian and Shahram Mohammadnejad. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.