Hi everyone,
We have a special seminar coming up on Friday. Details are copied below.
Leslie will be visiting us for the entire day. I am attaching her schedule
for those of you who signed up for meetings with her / lunch.
Best,
Stephanie
============================
*SPECIAL GROUP MEETING*
*When* - Friday dec 13th from 2-3pm
*Where* - Cabot Division room
*Quantum Entanglement and Nonlinear Spectroscopy: Non-classical Light
Matter Interactions in Organic Molecules*
Leslie Upton, University of Michigan
Quantum entanglement is most commonly known to be utilized in applications
for quantum information science, for example quantum computing and quantum
cryptography. Yet, very little work has been done studying and
characterizing the non-classical light matter interactions in large,
organic molecules. The use of entangled photons for multi-photon
spectroscopy is a novel technique with several potential applications in
entangled two-photon excited fluorescence microscopy, selective two-photon
spectroscopy, quantum imaging and remote sensing. In this work, we
demonstrate that with the use of entangled photons one can study ETPA
scaling properties for large conjugated organic molecules and study
molecules with varying absorption properties. This can be done with ten
orders of magnitude less photons than classical TPA measurements.
Selective absorption of entangled photons is also observed in several
organic molecules. A theoretical model is provided to explain this
mechanism of non-classical absorption. Through these experiments and
theoretical calculations, it is found that while some molecules may have
strong classical multi-photon absorption, due to their excitation pathways;
these same excitation pathways may hinder the entangled photon absorption
process. These entangled photon absorption results provide the first
steps in realizing and demonstrating the viability of selective entangled
two-photon spectroscopy.
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