Eliminate the temporal fluctuation of the phase difference. Applicable to optical quantum computers.
In optical quantum computation, a computation method called Gaussian boson sampling (GBS) is used, and light with the property of quantum superposition called single-mode squeezed vacuum(SMSV) is used as input light. In order to realize a large-scale GBS system, the silicon photonic wire waveguides are expected as a highly integrated platform. However, there are few examples of SMSV generation in the silicon photonic wire waveguides. Generation of SMSV requires two-wavelength excitation light pulses, and there are prior technologies that synthesize the first and second optical pulses. However, the phase difference between the first and second optical pulses changes over time, makes accurate measurement of the SMSV impossible. Temporal fluctuations of noise photons mixed into the SMSV also inhibit accurate measurement. A special optical wavelength filter outputs the first and second optical pulses to a coaxial path, and by eliminating the temporal fluctuation of the phase difference, a stabilized SMSV is obtained by the present invention.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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