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Crux of Using the Cascaded Emission of a Three-Level Quantum Ladder System to Generate Indistinguishable Photons

Eva Schöll, Lucas Schweickert, Lukas Hanschke, Katharina D. Zeuner, Friedrich Sbresny, Thomas Lettner, Rahul Trivedi, Marcus Reindl, Saimon Filipe Covre da Silva, Rinaldo Trotta, Jonathan J. Finley, Jelena Vučković, Kai Müller, Armando Rastelli, Val Zwiller, and Klaus D. Jöns
Phys. Rev. Lett. 125, 233605 – Published 1 December 2020
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Abstract

We investigate the degree of indistinguishability of cascaded photons emitted from a three-level quantum ladder system; in our case the biexciton-exciton cascade of semiconductor quantum dots. For the three-level quantum ladder system we theoretically demonstrate that the indistinguishability is inherently limited for both emitted photons and determined by the ratio of the lifetimes of the excited and intermediate states. We experimentally confirm this finding by comparing the quantum interference visibility of noncascaded emission and cascaded emission from the same semiconductor quantum dot. Quantum optical simulations produce very good agreement with the measurements and allow us to explore a large parameter space. Based on our model, we propose photonic structures to optimize the lifetime ratio and overcome the limited indistinguishability of cascaded photon emission from a three-level quantum ladder system.

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  • Received 11 June 2020
  • Accepted 22 October 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.233605

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by Bibsam.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Eva Schöll1,*,‡, Lucas Schweickert1,*, Lukas Hanschke2,3, Katharina D. Zeuner1, Friedrich Sbresny2,3, Thomas Lettner1, Rahul Trivedi4, Marcus Reindl5, Saimon Filipe Covre da Silva5, Rinaldo Trotta6, Jonathan J. Finley7,3, Jelena Vučković4, Kai Müller2,3, Armando Rastelli5, Val Zwiller1, and Klaus D. Jöns1,†,‡

  • 1Department of Applied Physics, Royal Institute of Technology, Albanova University Centre, Roslagstullsbacken 21, 106 91 Stockholm, Sweden
  • 2Walter Schottky Institut and Department of Electrical and Computer Engineering, Technische Universität München, 85748 Garching, Germany
  • 3Munich Center for Quantum Science and Technology, Schellingstr. 4, 80799 Munich, Germany
  • 4Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
  • 5Institute of Semiconductor and Solid State Physics, Johannes Kepler University Linz, 4040 Linz, Austria
  • 6Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro 1, I-00185 Roma, Italy
  • 7Walter Schottky Institut and Physik Department, Technische Universität München, 85748 Garching, Germany

  • *These authors contributed equally to this work.
  • Corresponding author. klaus.joens@uni-paderborn.de
  • Present address: Department of Physics, Paderborn University, 33098 Paderborn, Germany.

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Issue

Vol. 125, Iss. 23 — 4 December 2020

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