Date of Award
8-1-2026
Degree Name
Master of Science
Department
Physics
First Advisor
Lee, Bumsu
Abstract
Quantum information systems are the basis for communications, quantum computing, and higher efficiency consumer electronics. However, limitations in the implementations of current platforms beg for more practical, efficient, and stable platforms. Current methods include quantum defects, quantum dots, ion-atom traps, and molecular systems but each has difficulty in being a consumer-friendly system based on a quantum communications device. We propose a method of using an organic molecular emitter that is incorporated into a host organic metalocenne crystal. The inherent advantages of this system introduce an intrinsic property of a higher transition dipole moment leading to brighter single photon emission and increased transition cross section of the chromophore being surrounded by ferrocene neighbors that have a high index of refraction. It also has characteristics of enhanced quantum coherence and emission efficiency due to the isolation of the chromophores from the reduction of intermolecular interactions and from the ferrocene and chromophore interaction limiting reabsorption processes due to ferrocene being transparent to excitation and emission of the chromophore. Furthermore, the organic chromophore/metallocene system can be synthesized and made simply compared to other current methods and at a cheaper price with user dependent device tunability characteristics based on varying growth parameters. Further applications can be spread to photonics and photo-circuits in which photons would be the basis of circuit-to-circuit communication. In our study we look at the foundational basis of the single photon system by showing that growing with PVT (physical vapor transport) can create large, pure, and defect free single crystal metallocene encompassing ferrocene, nickelocene, and cobaltocene and characterizing the properties of these crystals by use of XRD, LIBS, Raman, and FTIR to narrow down the superior host matrix. In another study we determine the best dopant chromophore to be deposited into the host matrix, and this is confirmed with Raman spectroscopy, temperature dependent photoluminescence, and polarization dependent photoluminescence. With these studies combined, we offer a base platform for a futuristic single photon source.
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