Localized All‐Optical Control of Single Semiconductor Quantum Dots through Plasmon Polariton‐Induced Screening
Abstract
Due to their ability to strongly modify the local optical field through the excitation of surface plasmon polaritons (SPPs), plasmonic nanostructures are often used to reshape the emission direction and enhance the radiative decay rate of quantum emitters, such as semiconductor quantum dots (QDs). These features are essential for quantum information processing, nanoscale photonic circuitry, and optoelectronics. However, the modification and enhancement demonstrated thus far have typically led to drastic alterations of the local energy density of the emitters, and hence their intrinsic optical properties, leaving little room for active control. Here, dynamic tuning of the energy states of a single semiconductor QD is demonstrated by optically modifying its local dielectric environment with a nearby plasmonic structure, instead of directly coupling it to the QD. This technique leaves intact the intrinsic optical properties of the QD, while enabling a reversible all‐optical control mechanism that operates below the diffraction limit at low power levels.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 16, 2018
- Source ID
- 10.1002/adom.201800345
Entities
People
- Alex Krasnok
- Allan S. Bracker
- Andrea Alù
- Matt Seaton
- Yanwen Wu
Organizations
- Air Force Office of Scientific Research
- CUNY Graduate School and University Center
- City College of New York
- City University of New York
- Division of Electrical, Communications & Cyber Systems
- National Science Foundation
- Robert A. Welch Foundation
- United States Naval Research Laboratory
- University of South Carolina
- University of Texas at Austin