Research from the McKelvey School of Engineering at Washington University in St. Louis has found a missing piece in the puzzle of optical quantum computing.

Jung-Tsung Shen, associate professor in the Department of Electrical & Systems Engineering, has developed a deterministic, high-fidelity two-bit quantum  gate that takes advantage of a new form of light. This new logic gate is orders of magnitude more efficient than the current technology. 

"In the ideal case, the fidelity can be as high as 97%," Shen said.

His research was published in May 2021 in the journal Physical Review A.

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