Optical Barium Ion Qubit
Atomic Physics
2017-08-21 v1 Quantum Physics
Abstract
We demonstrate an optical single qubit based on 6S1/2 to 5D5/2 quadrupole transition of a single Ba+ ion operated by diode based lasers only. The resonance wavelength of the 6S1/2 to 5D5/2 quadrupole transition is about 1762 nm which suitably falls close to the U-band of the telecommunication wavelength. Thus this qubit is a naturally attractive choice towards implementation of quantum repeater or quantum networks using existing telecommunication networks. We observe continuous bit-flip oscillations at a rate of about 250 kHz which is fast enough for the qubit operation as compared to the measured coherence time of over 3 ms. We also present a technique to quantify the bit-flip error in each qubit NOT gate operation.
Cite
@article{arxiv.1611.10016,
title = {Optical Barium Ion Qubit},
author = {Dahyun Yum and Debashis De Munshi and Tarun Dutta and Manas Mukherjee},
journal= {arXiv preprint arXiv:1611.10016},
year = {2017}
}
Comments
5 pages, 5 figures