Double quantum dot Floquet gain medium

Stehlik J, Liu YY, Eichler C, Hartke TR, Mi X, Gullans MJ, Taylor JM, Petta JR (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Physical Review X American Physical Society

Book Volume: 6

Article Number: 041027

Journal Issue: 4

DOI: 10.1103/PhysRevX.6.041027

Abstract

Strongly driving a two-level quantum system with light leads to a ladder of Floquet states separated by the photon energy. Nanoscale quantum devices allow the interplay of confined electrons, phonons, and photons to be studied under strong driving conditions. Here, we show that a single electron in a periodically driven double quantum dot functions as a "Floquet gain medium," where population imbalances in the double quantum dot Floquet quasienergy levels lead to an intricate pattern of gain and loss features in the cavity response. We further measure a large intracavity photon number nc in the absence of a cavity drive field, due to equilibration in the Floquet picture. Our device operates in the absence of a dc current-one and the same electron is repeatedly driven to the excited state to generate population inversion. These results pave the way to future studies of nonclassical light and thermalization of driven quantum systems.

Authors with CRIS profile

Christopher Eichler

Involved external institutions

Princeton University

United States (USA) (US) National Institute of Standards and Technology (NIST)

United States (USA) (US)

How to cite

APA:

Stehlik, J., Liu, Y.-Y., Eichler, C., Hartke, T.R., Mi, X., Gullans, M.J.,... Petta, J.R. (2016). Double quantum dot Floquet gain medium. Physical Review X, 6(4). https://dx.doi.org/10.1103/PhysRevX.6.041027

MLA:

Stehlik, J., et al. "Double quantum dot Floquet gain medium." Physical Review X 6.4 (2016).

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