# Autonomous calibration of single spin qubit operations

Autonomous calibration of single spin qubit operations Fully autonomous precise control of qubits is crucial for quantum information processing, quantum communication, and quantum sensing applications. It requires minimal human intervention on the ability to model, to predict, and to anticipate the quantum dynamics, as well as to precisely control and calibrate single qubit operations. Here, we demonstrate single qubit autonomous calibrations via closed-loop optimisations of electron spin quantum operations in diamond. The operations are examined by quantum state and process tomographic measurements at room temperature, and their performances against systematic errors are iteratively rectified by an optimal pulse engineering algorithm. We achieve an autonomous calibrated fidelity up to 1.00 on a time scale of minutes for a spin population inversion and up to 0.98 on a time scale of hours for a single qubit $$\frac{\pi }{2}$$ π 2 -rotation within the experimental error of 2%. These results manifest a full potential for versatile quantum technologies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png npj Quantum Information Springer Journals

# Autonomous calibration of single spin qubit operations

5 pages

/lp/springer_journal/autonomous-calibration-of-single-spin-qubit-operations-VbVJlvwFCz
Publisher
Springer Journals
Subject
Physics; Physics, general; Quantum Physics; Quantum Information Technology, Spintronics; Quantum Computing; Quantum Field Theories, String Theory; Classical and Quantum Gravitation, Relativity Theory
eISSN
2056-6387
D.O.I.
10.1038/s41534-017-0049-8
Publisher site
See Article on Publisher Site

### Abstract

Fully autonomous precise control of qubits is crucial for quantum information processing, quantum communication, and quantum sensing applications. It requires minimal human intervention on the ability to model, to predict, and to anticipate the quantum dynamics, as well as to precisely control and calibrate single qubit operations. Here, we demonstrate single qubit autonomous calibrations via closed-loop optimisations of electron spin quantum operations in diamond. The operations are examined by quantum state and process tomographic measurements at room temperature, and their performances against systematic errors are iteratively rectified by an optimal pulse engineering algorithm. We achieve an autonomous calibrated fidelity up to 1.00 on a time scale of minutes for a spin population inversion and up to 0.98 on a time scale of hours for a single qubit $$\frac{\pi }{2}$$ π 2 -rotation within the experimental error of 2%. These results manifest a full potential for versatile quantum technologies.

### Journal

npj Quantum InformationSpringer Journals

Published: Dec 1, 2017

## You’re reading a free preview. Subscribe to read the entire article.

### DeepDyve is your personal research library

It’s your single place to instantly
that matters to you.

over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month ### Explore the DeepDyve Library ### Search Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly ### Organize Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place. ### Access Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals. ### Your journals are on DeepDyve Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more. All the latest content is available, no embargo periods. DeepDyve ### Freelancer DeepDyve ### Pro Price FREE$49/month
\$360/year

Save searches from
PubMed

Create lists to

Export lists, citations