Optics

Credit: Marcus Albrechtsen/Niels Bohr Institute
Illustration of the telecom single-photon device. A resonant pulsed laser (top left) excites a single quantum dot embedded within a photonic-crystal waveguide, and the dot emits telecom-wavelength photons one at a time into the on-chip circuit. Gold contacts apply the bias that stabilizes the dot's charge environment.
By silencing noise at its source, waveguide-integrated quantum dots now deliver transform-limited single photons directly within the original telecom band—making the premier quantum...
Aug. 3, 2026
Credit: ESA
FIGURE 1. LISA will use three spacecraft separated by ~2.5 million kilometers to exchange laser beams and detect low-frequency gravitational waves.
July 31, 2026
Credit: John Dexheimer
Investors have been rewarded and appear optimistic about continued growth.
July 30, 2026
Credit: Lidrotec
FIGURE 1. Schematic of the LidroCUT process.
July 29, 2026
Credit: MPL
This shot shows the group’s highly broadband and bright optical parametric amplifier in action.
July 27, 2026
© Endeavor Business Media
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Following the Photons: A Photonics Podcast
July 21, 2026
Credit: Yiming Gong
Schematic comparison of carrier injection through a) 1 + 2 and b) 2 + 3 quantum interference within a semiconductor. The higher-order 2 + 3 process concentrates carriers into a narrower range of momentum-space directions and produces a more directional photocurrent.
July 20, 2026
Credit: Surrey NanoSystems
Two identical bronze casts—one is coated with Vantablack 310.
July 20, 2026
© Endeavor Business Media
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Following the Photons: A Photonics Podcast
July 14, 2026

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