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Search Publications by: Takuma Nakamura (IntlAssoc)

Displaying 1 - 2 of 2

Reduction of Flicker Phase Noise in High-Speed Photodetectors under Ultrashort Pulse Illumination

April 23, 2021

Author(s)

Dahyeon Lee, Takuma Nakamura, Jizhao Zang, Joe C. Campbell, Scott Diddams, Franklyn Quinlan

High-fidelity photodetection enables the transfer of the low noise inherent to optical oscillators to the microwave domain. However, when photodetecting optical signals of the highest timing stability, photodiode flicker (1/f) noise can dominate the

Coherent Optical Clock Down-Conversion for Microwave Frequencies with 10-18 Instability

May 22, 2020

Author(s)

Takuma Nakamura, Josue Davila-Rodriguez, Holly Leopardi, Jeffrey Sherman, Tara Fortier, Xiaojun Xie, Joe C. Campbell, Will McGrew, Xiaogang Zhang, Youssef Hassan, Daniele Nicolodi, Kyle Beloy, Andrew Ludlow, Scott Diddams, Franklyn Quinlan

Optical atomic clocks are poised to redefine the SI second, thanks to stability and accuracy more than one hundred times better than the current microwave atomic clock standard. However, the best optical clocks have not seen their performance transferred