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Boulder

Quantum & Nonlinear Nanophotonics Group

Performs long-term basic research on microresonator frequency-combs; models, designs, fabricates, and tests integrated nonlinear photonics platforms for frequency control and synthesis; designs, fabricates, and tests integrated photonics circuits components for compact atomic clock and sensors as

atom chamber

Portable Optical Lattice Clock

Developing advanced optical clocks that can operate beyond the lab unlocks new applications in science, technology, and quantum sensing and metrology.

Time Signal Broadcast Stations

NIST distributes frequency and time signals by radio, referenced to UTC(NIST), to users in all 50 states. Radio Stations WWV, in Ft. Collins...

Setting Your Computer Clock

The prolific NIST Internet Time Service (ITS) synchronizes more clocks than any time service in the world, handling about one million timing...
Andrew Ludlow

2022 APS Fellow - Andrew Ludlow

For outstanding scientific leadership in the development of a state-of-the-art optical lattice clock to achieve one of the lowest atomic
Tara Fortier

2022 APS Fellow - Tara Fortier

For pioneering contributions to phase stabilized mode-locked lasers and optical combs, fundamental tests of physics with precision optical
Boulder Cryogenic Quantum Testbed

Quantum Characterization

The Boulder Cryogenic Quantum Testbed (BCQT) Project implements, develops and openly disseminates standard protocols to reproducibly measure the performance
Cryogenic Photonic Interconnects illustration

Cryogenic Photonic Interconnects

We develop electro-optical systems for photonic generation and delivery of micro- and millimeter-wave signals to superconducting circuit platforms.

GNSS and satellite time transfer

There are two established techniques for high resolution clock comparison over very long baselines on Earth. The first involves a direct two...

Time Over Fiber

Executive Order 13905 ("Strengthening National Resilience Through Responsible Use of Positioning, Navigation, and Timing Services) directed...