Publications (10)
Three-Photon Absorption Spectra and Bandgap Scaling in Direct-Gap Semiconductors
Sepehr Benis, Claudiu M. Cirloganu, Nicholas Cox +11
This paper presents three-photon absorption (3PA) measurement results for nine direct-gap semiconductors, including full 3PA spectra for ZnSe, ZnS, and GaAs. These results, along w…
Properties and -representability conditions of the two-body density matrix
Nicholas Cox
A summary is presented of the properties of the coefficient matrices formed by expanding the two-body reduced density matrix in a complete set of two-electron wave functions. Calcu…
A broadband silicon photonic-integrated-circuit based RF spectrum analyzer with 10 MHz spectral resolution
Brandon Redding, Joseph B. Murray, Matthew J. Murray +10
Designing miniaturized optical spectrometers is an increasingly active area of research as spectrometers are crucial components for a wide range of applications including chemical…
Photonic frequency multiplexed next-generation reservoir computer
Nicholas Cox, Joseph Murray, Joseph Hart +1
In this work, we introduce and experimentally demonstrate a photonic frequency-multiplexed next generation reservoir computer (FM-NGRC) capable of performing real-time inference at…
Identification of the Chromophores in Prussian blue
Li Musen, Robin Purchase, Parvin Safari +6
Prussian blue was the world's first synthetic dye. Its structural, optical and magnetic properties have led to many applications in technology and medicine, and provide paradigms f…
Nonlinear pluggable optics: Digital signal processing-free Intensity Modulated Direct Detection links using analog photonic Next Generation Reservoir Computing
Nicholas Cox, Joseph Murray, Ross T. Schermer +6
In this work, we propose a Nonlinear Pluggable Optic (NLPO) transceiver that combines the low latency and low power consumption of Linear Pluggable Optics (LPO) with the range and…
Neural Network Emulation of Flow in Heavy-Ion Collisions at Intermediate Energies
Nicholas Cox, Xavier Grundler, Bao-An Li
Applications of new techniques in machine learning are speeding up progress in research in various fields. In this work, we construct and evaluate a deep neural network (DNN) to be…
Exact solutions to the quantum many-body problem using the geminal density matrix
Nicholas Cox
It is virtually impossible to directly solve the Schrödinger equation for a many-electron wave function due to the exponential growth in degrees of freedom with increasing particl…
Photonic next-generation reservoir computer based on distributed feedback in optical fiber
Nicholas Cox, Joseph Murray, Joseph Hart +1
Reservoir computing (RC) is a machine learning paradigm that excels at dynamical systems analysis. Photonic RCs, which perform implicit computation through optical interactions, ha…
Nondegenerate Two-Photon Absorption in GaAs/AlGaAs Multiple Quantum Well Waveguides
Nicholas Cox, Junxiong Wei, Himansu Pattanaik +4
We present femtosecond pump-probe measurements of the nondegenerate (1960nm excitation and 1176--1326nm probe) two-photon absorption spectra of 8 nm GaAs/12nm Al$_{…