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arXiv · 1505.02084

High-bandwidth transfer of phase stability through a fiber frequency comb

Nils Scharnhorst·Jannes B. Wübbena·Stephan Hannig·Kornelius Jakobsen·Johannes Kramer·Ian D. Leroux·Piet O. Schmidt
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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.

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Nils Scharnhorst, Jannes B. Wübbena, Stephan Hannig, Kornelius Jakobsen, Johannes Kramer, Ian D. Leroux, Piet O. Schmidt. 2015-05-08. High-bandwidth transfer of phase stability through a fiber frequency comb. https://doi.org/10.1364/oe.23.019771

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