Electronics and photonics
Lasers, clocks, analog circuits and devices for moving quantum information through optical networks.
7 problemsElectronic devices
Components that turn electrical inputs into useful computation or light.
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Browse collectionsA few problems to explore
4 totalHigh-precision analog in-memory computing
Several methods correct errors in analog memory calculations. How should they be combined when inputs, noise and conversion costs change?
Electrically pumped GeSn lasers
Germanium–tin lasers can work at room temperature when another laser powers them. Can an electric current do the job?
Room-temperature perovskite laser diodes
Perovskite crystals can lase continuously at room temperature when lit by another light source. A directly powered laser diode has now worked at 8 kelvin; bringing that operation to room temperature remains the target.
Solid-state nuclear clock accuracy
Laser-controlled clocks can already use thorium-229 nuclei inside crystals. Can their environmental shifts be measured and controlled well enough to establish a complete fractional-frequency uncertainty near 10^-18?