Characterizing Quantum Instruments: From Nondemolition Measurements to Quantum Error Correction

PRX Quantum, vol. 3

Abstract

A complete toolbox for the tomographic characterization of generic instruments is experimentally applied to detect qubit loss and leakage, offering in-depth information about the failure modes that degrade quantum error correction.

Authors 10

1. Roman Stricker

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

2. Davide Vodola

   Istituto Nazionale di Fisica Nucleare, Sezione di Bologna · University of Bologna

   Affiliation as printed

   Dipartimento di Fisica e Astronomia, Università di Bologna, Bologna I-40129, Italy

   INFN, Sezione di Bologna, Bologna I-40127, Italy

3. Alexander Erhard

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

4. Lukas Postler

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

5. M. Meth

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

6. Martin Ringbauer

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

7. Philipp Schindler

   Universität Innsbruck

   Affiliation as printed

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

8. R. Blatt

   Austrian Academy of Sciences · Universität Innsbruck · Institute for Quantum Optics and Quantum Information Innsbruck · Alpine Quantum Technologies (Austria)

   Affiliation as printed

   Alpine Quantum Technologies GmbH, Innsbruck 6020, Austria

   Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria

   Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Otto-Hittmair-Platz 1, Innsbruck A-6020, Austria

9. Markus Michael Müller Aachen Institute for Quantum Information

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institute for Quantum Information, RWTH Aachen University, Aachen D-52056, Germany

   Peter Grünberg Institute, Theoretical Nanoelectronics, Forschungszentrum Jülich, Jülich D-52425, Germany

10. Thomas Monz

    Universität Innsbruck · Alpine Quantum Technologies (Austria)

    Affiliation as printed

    Alpine Quantum Technologies GmbH, Innsbruck 6020, Austria

    Institut für Experimentalphysik, Universität Innsbruck, Technikerstr. 25, Innsbruck A-6020, Austria