Exploring the effect of noise on the Berry phase

Berger S, Pechal M, Abdumalikov AA, Steffen L, Fedorov A, Wallraff AJ, Filipp S, Eichler C (2013)

Publication Type: Journal article

Publication year: 2013

Journal

Physical Review A - Atomic, Molecular, and Optical Physics American Physical Society

Book Volume: 87

Article Number: 060303

Journal Issue: 6

DOI: 10.1103/PhysRevA.87.060303

Abstract

We experimentally investigate the effects of noise on the adiabatic and cyclic geometric phase, also termed the Berry phase. By introducing artificial fluctuations in the path of the control field, we measure the geometric contribution to dephasing of an effective two-level system for a variety of noise powers and different paths. Our results, measured using a microwave-driven superconducting qubit, clearly show that only fluctuations which distort the path lead to geometric dephasing. In a direct comparison with the dynamic phase, which is path independent, we observe that the Berry phase is less affected by noise-induced dephasing. This observation directly points towards the potential of geometric phases for quantum gates or metrological applications. © 2013 American Physical Society.

Authors with CRIS profile

Christopher Eichler

Involved external institutions

Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich CH Switzerland (CH)

How to cite

APA:

Berger, S., Pechal, M., Abdumalikov, A.A., Steffen, L., Fedorov, A., Wallraff, A.J.,... Eichler, C. (2013). Exploring the effect of noise on the Berry phase. Physical Review A - Atomic, Molecular, and Optical Physics, 87(6). https://dx.doi.org/10.1103/PhysRevA.87.060303

MLA:

Berger, S., et al. "Exploring the effect of noise on the Berry phase." Physical Review A - Atomic, Molecular, and Optical Physics 87.6 (2013).

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