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Main Title: Coherent coupling of individual quantum dots measured with phase-referenced two-dimensional spectroscopy: Photon echo versus double quantum coherence
Author(s): Delmonte, Valentin
Specht, Judith F.
Jakubczyk, Tomasz
Höfling, Sven
Kamp, Martin
Schneider, Christian
Langbein, Wolfgang
Nogues, Gilles
Richter, Marten
Kasprzak, Jacek
Type: Article
Abstract: We employ two-dimensional (2D) coherent, nonlinear spectroscopy to investigate couplings within individual InAs quantum dots (QDs) and QD molecules. Swapping pulse ordering in a two-beam sequence permits one to distinguish between rephasing and nonrephasing four-wave mixing (FWM) configurations. We emphasize the nonrephasing case, allowing one to monitor two-photon coherence dynamics. Respective Fourier transform yields a double quantum 2D FWM map, which is corroborated with its single quantum counterpart, originating from the rephasing sequence. We introduce referencing of the FWM phase with the one carried by the driving pulses, overcoming the necessity of its active stabilization, as required in 2D spectroscopy. Combining single and double quantum 2D FWM provides a pertinent tool in detecting and ascertaining coherent coupling mechanisms between individual quantum systems, as exemplified experimentally.
Issue Date: 2017
Date Available: 19-Nov-2020
Language Code: en
DDC Class: 530 Physik
Sponsor/Funder: EC/FP7/EU/306387/Propagative and Internal Coherence in Semiconductor Nanostructures/PICSEN
DFG, 87159868, GRK 1558: Kollektive Dynamik im Nichtgleichgewicht: in kondensierter Materie und biologischen Systemen
DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, Bauelemente
Journal Title: Physical Review B
Publisher: American Physical Society (APS)
Volume: 96
Issue: 4
Article Number: 41124
Publisher DOI: 10.1103/physrevb.96.041124
EISSN: 2469-9969
ISSN: 2469-9950
TU Affiliation(s): Fak. 2 Mathematik und Naturwissenschaften » Inst. Theoretische Physik » AG Nichtlineare Optik und Quantenelektronik
Appears in Collections:Technische Universität Berlin » Publications

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