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Title: Stabilizing Rabi oscillation of a charge qubit via the atomic clock technique
Authors: Yu, Deshui
Landra, Alessandro
Kwek, Leong Chuan
Amico, Luigi
Dumke, Rainer
Keywords: Cooper-pair Box
Charge Qubit
Issue Date: 2018
Source: Yu, D., Landra, A., Kwek, L. C., Amico, L., & Dumke, R. (2018). Stabilizing Rabi oscillation of a charge qubit via the atomic clock technique. New Journal of Physics, 20, 023031-.
Series/Report no.: New Journal of Physics
Abstract: We propose a superconducting circuit-atom hybrid, where the Rabi oscillation of single excess Cooper pair in the island is stabilized via the common atomic clock technique. The noise in the superconducting circuit is mapped onto the voltage source which biases the Cooper-pair box via an inductor and a gate capacitor. The fast fluctuations of the gate charge are significantly suppressed by an inductor–capacitor resonator, leading to a long-relaxation-time Rabi oscillation. More importantly, the residual low-frequency fluctuations are further reduced by using the general feedback-control method, in which the voltage bias is stabilized via continuously measuring the dc-Stark-shift-induced atomic Ramsey signal. The stability and coherence time of the resulting charge-qubit Rabi oscillation are both enhanced. The principal structure of this Cooper-pair-box oscillator is studied in detail.
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aaa643
Rights: © 2018 The Author(s) (published by IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft). Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:IAS Journal Articles

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