29 citations · 39 across the 12 of their papers we have counts for
12 papers
Redefining the limits of real-time noise cancellation in optical fiber links
Charles A. McLemore, Marco Pomponio, Takuma Nakamura +4
A broad and growing array of applications rely on the faithful transmission of ultrastable optical signals over noisy paths, requiring cancellation of environmentally induced noise…
Fiber Link Stabilization with a Multicore Fiber Amplifier
Yifan Liu, Takuma Nakamura, Daniel J. Elson +7
We study the use of separate cores of a multicore erbium-doped fiber amplifier (MC-EDFA) in a noise-canceled link for ultrastable optical frequency transfer. We demonstrate fractio…
Ultralow noise microwaves with free-running frequency combs and electrical feedforward
Takuma Nakamura, William Groman, Qing-Xin Ji +11
Optically generated microwave signals exhibit some of the lowest phase noise and timing jitter of any microwave-generating technology to date. The success of octave-spanning optica…
Sub-femtosecond stabilization of multicore fiber for high-fidelity quantum networking at 100% duty cycle
Takuma Nakamura, Nazanin Hoghooghi, Nicolas Fontaine +8
Originally envisioned as a solution for the capacity crunch in telecommunications networks, multicore fibers (MCF) are contributing to scientific fields beyond telecom, such as sen…
From ultra-noisy to ultra-stable: optimization of the optoelectronic laser lock
Takuma Nakamura, Yifan Liu, Naijun Jin +5
We demonstrate thermal-noise-limited direct locking of a semiconductor distributed feedback (DFB) laser to a sub-1 mL volume, ultrastable optical cavity, enabling extremely compact…
Cryogenic photonic link using an extended-InGaAs photodiode and short pulse illumination towards high-fidelity drive of superconducting qubits
Takuma Nakamura, Dahyeon Lee, Jason Horng +3
We investigate short pulse illumination of a high-speed extended-InGaAs photodiode at cryogenic temperatures towards its use in control and readout of superconducting qubits. First…
Enabling a multifunctional telecommunications fiber optic network: Ultrastable optical frequency transfer and attosecond timing in deployed multicore fiber
Nazanin Hoghooghi, Mikael Mazur, Nicolas Fontaine +10
The telecommunications industry's deployment of billions of kilometers of optical fiber has created a vast global network that can be exploited for additional applications such as…
Deployment of a Transportable Yb Optical Lattice Clock
Tobias Bothwell, Wesley Brand, Robert Fasano +16
We report on the first deployment of a ytterbium (Yb) transportable optical lattice clock (TOLC), commercially shipping the clock 3,000 km from Boulder, Colorado to Washington DC.…
Ultrastable vacuum-gap Fabry-Pérot cavities operated in air
Yifan Liu, Naijun Jin, Dahyeon Lee +9
We demonstrate a vacuum-gap ultrastable optical reference cavity that does not require a vacuum enclosure. Our simple method of optical contact bonding in a vacuum environment allo…
Photonic Millimeter-wave Generation Beyond the Cavity Thermal Limit
William Groman, Igor Kudelin, Alexander Lind +11
Next-generation communications, radar and navigation systems will extend and exploit the higher bandwidth of the millimeter-wave domain for increased communication data rates as we…
Tunable X-band opto-electronic synthesizer with ultralow phase noise
Igor Kudelin, Pedram Shirmohammadi, William Groman +12
Modern communication, navigation, and radar systems rely on low noise and frequency-agile microwave sources. In this application space, photonic systems provide an attractive alter…
Optimizing the linearity in high-speed photodiodes
J. Davila-Rodriguez, X. Xie, J. Zang +7
Analog photonic links require high-fidelity, high-speed optical-to-electrical conversion for applications such as radio-over-fiber, synchronization at kilometer-scale facilities, a…