A single photoelectron transistor for quantum optical communications
摘要
A single photoelectron can be trapped and its photoelectric charge detected by a source/drain channel in a transistor. Such a transistor photodetector can be useful for flagging the safe arrival of a photon in a quantum repeater. The electron trap can be photo-ionized and repeatedly reset for the arrival of successive individual photons. This single photoelectron transistor (SPT) operating at the lambda = 1.3 mu m tele-communication band, was demonstrated by using a windowed-gate double-quantum-well InGaAs/InAlAs/InP heterostructure that was designed to provide near-zero electron g-factor. The g-factor engineering allows selection rules that would convert a photon's polarization to an electron spin polarization. The safe arrival of the photo-electric charge would trigger the commencement of the teleportation algorithm.
引用
@article{arxiv.quant-ph/0208191,
title = {A single photoelectron transistor for quantum optical communications},
author = {Hideo Kosaka and Deepak S. Rao and Hans D. Robinson and Prabhakar Bandaru and Kikuo Makita and Eli Yablonovitch},
journal= {arXiv preprint arXiv:quant-ph/0208191},
year = {2009}
}