A Caltech Library Service

Quantum dots coupled to chip-based dielectric resonators via DNA origami mediated assembly

Mitskovets, Anna and Gopinath, Ashwin and Rothemund, Paul and Atwater, Harry A. (2016) Quantum dots coupled to chip-based dielectric resonators via DNA origami mediated assembly. In: Nanophotonic Materials XIII. Proceedings of SPIE. No.9919. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 99190H. ISBN 9781510602298.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Interfacing of single photon emitters, such as quantum dots, with photonic nanocavities enables study of fundamental quantum electrodynamic phenomena. In such experiments, the inability to precisely position quantum emitters at the nanoscale usually limits the ability to control spontaneous emission, despite sophisticated control of optical density of states by cavity design. Thus, effective light-matter interactions in photonic nanostructures strongly depend on deterministic positioning of quantum emitters. In this work by using directed self-assembly of DNA origami we demonstrate deterministic coupling of quantum dots with gallium phosphide (GaP) dielectric whispering gallery mode resonators design to enhance CdSe quantum dot emission at 600nm-650nm. GaP microdisk and microring resonators are dry-etched through 200nm layer of gallium phosphide on silicon dioxide/silicon substrates. Our simulations show that such GaP resonators may have quality factors up to 10^5, which ensures strong light-matter interaction. On the top surface of microresonators, we write binding sites in the shape of DNA origami using electron beam lithography, and use oxygen plasma exposure to chemically activate these binding sites. DNA origami self-assembly is accomplished by placing DNA origami – quantum dot complexes into these binding sites. This approach allows us to achieve deterministic placement of the quantum dots with a few nm precision in position relative to the resonator. We will report photoluminescence spectroscopy and lifetime measurements of quantum dot – resonator deterministic coupling to probe the cavity-enhanced spontaneous emission rate. Overall, this approach offers precise control of emitter positioning in nanophotonic structures, which is a critical step for scalable quantum information processing.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Rothemund, Paul0000-0002-1653-3202
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).
Series Name:Proceedings of SPIE
Issue or Number:9919
Record Number:CaltechAUTHORS:20180706-090357843
Persistent URL:
Official Citation:Anya Mitskovets, Ashwin Gopinath, Paul Rothemund, Harry A. Atwater, "Quantum dots coupled to chip-based dielectric resonators via DNA origami mediated assembly (Conference Presentation)", Proc. SPIE 9919, Nanophotonic Materials XIII, 99190H (7 November 2016); doi: 10.1117/12.2238451;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87583
Deposited By: George Porter
Deposited On:06 Jul 2018 22:41
Last Modified:15 Nov 2021 20:49

Repository Staff Only: item control page