High-bandwidth transfer of phase stability through a fiber frequency comb
Abstract
We demonstrate phase locking of a 729 nm diode laser to a 1542 nm master laser via an erbium-doped-fiber frequency comb, using a transfer-oscillator feedforward scheme which suppresses the effect of comb noise in an unprecedented 1.8 MHz bandwidth. We illustrate its performance by carrying out coherent manipulations of a trapped calcium ion with 99 % fidelity even at few-microsecond timescales. We thus demonstrate that transfer-oscillator locking can provide sufficient phase stability for high-fidelity quantum logic manipulation even without pre-stabilization of the slave diode laser.
Keywords
Cite
@article{arxiv.1505.02084,
title = {High-bandwidth transfer of phase stability through a fiber frequency comb},
author = {Nils Scharnhorst and Jannes B. Wübbena and Stephan Hannig and Kornelius Jakobsen and Johannes Kramer and Ian D. Leroux and Piet O. Schmidt},
journal= {arXiv preprint arXiv:1505.02084},
year = {2016}
}
Comments
6 pages, 3 figures. To be published in Optics Express. Clarified method for measuring laser noise spectra. Improved spectroscopic data in Fig. 3, with motional decoherence now suppressed