Fully robust qubit in atomic and molecular three-level systems
peer-reviewed
Erstveröffentlichung
2016-12-12Authors
Aharon, N.
Cohen, I.
Jelezko, Fedor
Retzker, A.
Wissenschaftlicher Artikel
Published in
New Journal of Physics ; 18 (2016), 12. - Art.-Nr. 123012. - eISSN 1367-2630
Link to original publication
https://dx.doi.org/10.1088/1367-2630/aa4fd3Faculties
Fakultät für NaturwissenschaftenInstitutions
Institut für QuantenoptikCenter for Integrated Quantum Science and Technology (IQST)
Document version
published version (publisher's PDF)Abstract
Abstract
We present a new method of constructing a fully robust qubit in a three-level system. By the application of continuous driving fields, robustness to both external and controller noise is achieved. Specifically, magnetic noise and power fluctuations do not operate within the robust qubit subspace. Whereas all the continuous driving based constructions of such a fully robust qubit considered so far have required at least four levels, we show that in fact only three levels are necessary. This paves the way for simple constructions of a fully robust qubit in many atomic and solid state systems that are controlled by either microwave or optical fields. We focus on the NV-center in diamond and analyze the implementation of the scheme, by utilizing the electronic spin sub-levels of its ground state. In current state-of-the-art experimental setups the scheme leads to improvement of more than two orders of magnitude in coherence time, pushing it towards the lifetime limit. We show how the fully robust qubit can be used to implement quantum sensing, and in particular, the sensing of high frequency signals.
EU Project uulm
SIQS / Simulators and Interfaces with Quantum Systems / EC / FP7 / 600645
DIADEMS / DIAmond Devices Enabled Metrology and Sensing / EC / FP7 / 611143
HYPERDIAMOND / The Diamond Revolution in Hyperpolarized MR Imaging - Novel Platform and Nanoparticle Targeted Probe / EC / H2020 / 667192
DIADEMS / DIAmond Devices Enabled Metrology and Sensing / EC / FP7 / 611143
HYPERDIAMOND / The Diamond Revolution in Hyperpolarized MR Imaging - Novel Platform and Nanoparticle Targeted Probe / EC / H2020 / 667192
Subject headings
[GND]: Quantentechnologie[LCSH]: Dynamics
[Free subject headings]: dynamical decoupling | quantum sensing | quantum technologies | 03.67.Ac | 03.67.Pp
[DDC subject group]: DDC 530 / Physics
Metadata
Show full item recordDOI & citation
Please use this identifier to cite or link to this item: http://dx.doi.org/10.18725/OPARU-46347
Aharon, N. et al. (2022): Fully robust qubit in atomic and molecular three-level systems. Open Access Repositorium der Universität Ulm und Technischen Hochschule Ulm. http://dx.doi.org/10.18725/OPARU-46347
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