Applied Physics Seminar

Tuesday, October 18, 2022
4:00pm to 5:00pm
Add to Cal
Noyes 147 (J. Holmes Sturdivant Lecture Hall)
Quantum optics with organic molecules: cavity QED, optomechanics, and cooperativity
Vahid Sandoghdar, Professor, Max Planck Institute for the Science of Light,

NOTE! Every student or postdoc (any option!) will receive a $5 SmartCash "coffee credit" for each Applied Physics lecture attended, in person or online. The credits will be tallied and issued after the last speaker of the term. *If you attend in person be sure to put your name on the sign-in sheet so you are counted.

10/18 Webinar Link: https://caltech.zoom.us/j/89745782742

10/18 Webinar ID: 897 4578 2742


Laboratory manipulation of single quantum emitters and single photons has matured to a routine procedure over the past two decades. These activities have led to new emerging topics such as optomechanical functionalities and coherent cooperative interactions among several quantum emitters. In this presentation, I discuss our efforts of the last decade in coupling molecules to high-finesse Fabry-Perot cavities and nanoscopic waveguides on a chip, demonstrating dipole-induced transparency, strong coupling and single-photon nonlinearity. Moreover, I present data on precision spectroscopy of the vibronic transitions in single molecules as well as theoretical conception of hybrid optomechanical platforms for achieving long coherence and storage times. I will also present the latest results on the coupling of two or molecules to each other via a common mode of a micro-resonator.

C. Toninelli, et al, Single organic molecules for photonic quantum technologies, Nature Materials 20, 1615 (2021).

A. Pscherer, et al, Single-molecule vacuum Rabi splitting: four-wave mixing and optical switching at the single-photon level, Phys. Rev. Lett., 127, 133603 (2021).

B. G├╝rlek, V. Sandoghdar, D.-M. Cano, Engineering long-lived vibrational states for an organic molecule, Phys. Rev. Lett., 127, 123603 (2021).

A. Shkarin, et al, Nanoscopic charge fluctuations in a gallium phosphide waveguide measured by single molecules, Phys. Rev. Lett, 126, 133602 (2021).

For more information, please contact Jennifer Blankenship by phone at 626-395-8124 or by email at jennifer@caltech.edu.