Authors:

Alina Stuleanu

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About Paper:

Single-photon emitters (SPEs) are crucial to the development of novel quantum information technologies. Although SPEs are vital to many quantum science applications, the development of an ideal source of SPEs is in a nascent stage. Silicon nitride (SiN) has recently been discovered to host SPEs. This is highly advantageous for integration with quantum photonic circuitry as SiN is a well-developed and leading industrial platform for integrated photonics. The goal of our work is to comprehensively understand and optimize a recently discovered method of large-scale site-controlled fabrication of SiN SPEs. Site control is critical as it allows SiN photonic circuitry to be fabricated with precisely placed SPEs. To accomplish this, localized emitters will be induced in SiN on silicon dioxide nanopillars using rapid thermal annealing. To facilitate the large-scale measurements of crucial SPE characteristics such as lifetime, brightness, indistinguishability, and stability, we are building a time-correlated single photon counting confocal microscopy setup with a focus on automation. This approach is based on the modular software framework Qudi, which allows for maximum flexibility in hardware and algorithm design. The statistical results of this analysis will determine whether this fabrication method is effective for industrial production of SPEs to be used in quantum technologies. Studying the impact of different parameters on SPE behavior will give us a better understanding of emitter formation mechanisms and performance. This will enable us to optimize and develop SPEs for integration with quantum photonic circuitry, as well as further our knowledge of SiN's intrinsic single photon emitters.

Source:

Purdue University / 2023

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Co-authors:

Alina Stuleanu