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Sonia Buckley

My research involves building integrated photonic circuits that can be used as the building blocks for I/O, computation and quantum optics. In particular, I work on developing low-power waveguide-integrated light sources and single-photon detectors. We have recently developed cryogenic waveguide-integrated silicon LEDs in a scalable lithographic process, which combined with our WSi waveguide integrated superconducting single-photon detectors, are the basic element needed for superconducting opto-electronic neuromorphic computing. These LEDs are based on luminescent centers in Si, which emit light via a radiative recombination processes that only takes place at cryogenic temperatures. However, since the SNSPDs are also cryogenically operated, this is not a disadvantage for our applications. The internal quantum efficiency of these centers is unknown, and there is a plethora of such centers to choose from, with limited prior investigation. Ultimately, I aim to combine such cryogenic LEDs with integrated photonic and superconducting circuits for cryogenic high-performance computing applications, as well as fundamental studies on their properties, and on-chip quantum optics experiments. We are also working on developing wafer-bonded low-power III-V LEDs to Si waveguides for similar applications.


Photons for communication, superconductors for efficiency

Jeffrey M. Shainline, Adam N. McCaughan, Jeffrey T. Chiles, Richard P. Mirin, Sae Woo Nam, Sonia M. Buckley
We present designs of superconducting optoelectronic neurons based on superconducting single- photon detectors, Josephson junctions, semiconductor light sources

Superconducting optoelectronic networks III: synaptic plasticity

Jeffrey M. Shainline, Adam N. McCaughan, Sonia M. Buckley, Christine A. Donnelly, Manuel C. Castellanos Beltran, Michael L. Schneider, Richard P. Mirin, Sae Woo Nam
As a means of dynamically reconfiguring the synaptic weight of a superconducting optoelectronic loop neuron, a superconducting flux storage loop is inductively
Created June 1, 2019