Research
I’m currently a PhD student in Applied Physics at Yale University, and I’ve conducted research previously at Raytheon BBN Technologies, Qubitekk Inc., and Northeastern University. See my CV for more details!
My research interests are focused on engineering superconducting circuits for quantum information science and other novel computational paradigms such as neuromorphic computing. I am also interested in microwave engineering using superconducting electronics and novel methods for coherent control of quantum systems.
Publications
W. D. Kalfus, G. J. Ribeill, G. E. Rowlands, H. K. Krovi, T. A. Ohki, L. C. G. Govia, “Neuromorphic computing with single-element quantum reservoirs” (in preparation)
W. D. Kalfus, D. F. Lee, G. J. Ribeill, S. D. Fallek, A. Wagner, B. Donovan, D. Ristè, T. A. Ohki, “High-fidelity control of superconducting qubits using direct microwave synthesis in higher Nyquist zones” arXiv:2008.02873 [quant-ph] (under review)
D. Ristè, L. C. G. Govia, B. Donovan, S. D. Fallek, W. D. Kalfus, M. Brink, N. T. Bronn, T. A. Ohki, “Real-time processing of stabilizer measurements in a bit-flip code” npj Quantum Information 6, 71 (2020); doi:10.1038/s41534-020-00304-y
Presentations
L. Govia, G. Ribeill, W. Kalfus, G. Rowlands, H. Krovi, T. Ohki, “Quantum Reservoir Computing with a Single Nonlinear Oscillator”, Special Session on Quantum Reservoirs, International Conference on Neuromorphic Systems, July 2020 (virtual due to pandemic, first author is presenter)
W. Kalfus, D. F. Lee, S. Fallek, G. Ribeill, A. Wagner, M. Gustafsson, T. Ohki, B. Donovan, D. Ristè, “Practical Microwave Direct Digital Synthesis for Superconducting Qubit Control”, Focus Session on Superconducting Qubit Readout, Detection, and Classical Control Electronics, APS March Meeting A36.00004, March 2020, (virtual due to pandemic; (view recording)
D. Ristè, L. C. G. Govia, B. Donovan, S. D. Fallek, W. D. Kalfus, M. Brink, N. T. Bronn, J. M. Chow, “Real-Time Decoding of Repeated Stabilizer Measurements in a Bit-Flip Code” APS March Meeting W16.00009, March 2020, Denver, CO (first author is presenter)
W. Kalfus, D. F. Lee, S. Fallek, G. Ribeill, M. Gustafsson, B. Hassick, T. Ohki, B. Donovan, D. Ristè, “Novel Superconducting Qubit Control Hardware Targeted Toward Experiments with Logical Qubits” IARPA LogiQ PI Meeting, July 2019, Denver, CO (Poster)
Projects
I work on a variety of personal technical projects in addition to my research.
Click on the headers or images below for details and photos!
