Optical tracing of multiple charges in single-electron devices

Abstract

Single molecules that exhibit narrow optical transitions at cryogenic temperatures can be used as local electric-field sensors. We derive the single charge sensitivity of aromatic organic dye molecules, based on first principles. Through numerical modeling, we demonstrate that by using currently available technologies it is possible to optically detect charging events in a granular network with a sensitivity better than $10^{-5}e/\sqrt{\text{Hz}}$ and track positions of multiple electrons, simultaneously, with nanometer spatial resolution. Our results pave the way for minimally-invasive optical inspection of electronic and spintronic nanodevices and building hybrid optoelectronic interfaces that function at both single-photon and single-electron levels.

arXiv comment7 pages, submitted to Physical Review

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Cited by in corpus (5)

• Single organic molecules for photonic quantum technologies
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• Interfacing superconducting qubits and single optical photons using molecules in waveguides
• Nanoscopic charge fluctuations in a gallium phosphide waveguide measured by single molecules
• Design and synthesis of aromatic molecules for probing electric-fields at the nanoscale