Single-Photon Sources

Urbasi Sinha, Surya Narayan Sahoo, Ashutosh Singh, Kaushik Joarder, Rishab Chatterjee and Sanchari Chakraborti

Exploring and extending the promise of quantum technologies requires the ability to work with single quantum objects—especially photons. Here’s a look at the range of single-photon-source technologies available, and how and where they work.

figureArtist’s visualization of an embedded waveguide-based single-photon source on an integrated photonic circuit. [Kaushik Joarder]

Just as the 19th century was labeled the machine age and the 20th century the information age, some are calling the 21st century the quantum age. And the past several decades have indeed seen remarkable developments in applying quantum physics to fundamental science and potential new technologies in communication, computation and sensing.

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