All reporting | The Expectancy

Three rows of measurements compare photon lifetime, multiphoton probability and two-photon interference at 80 MHz, 500 MHz and 1 GHz excitation rates.

P. Zahalka et al., Figure 2, arXiv:2609.05387v1 · CC BY 4.0. Original research figure used without editorial alteration except possible display scaling. Commercial reuse is permitted with attribution. No endorsement is implied.

ANALYSIS Quantum

A Half-Gigahertz Photon Source Is Bright. Its Quantum Quality Is the Harder Test

A Sparrow Quantum and Ruhr University Bochum preprint reports 515 million in-fiber single photons per second. The same measurements show why source rate alone does not make a scalable photonic quantum computer.

quantum computing
quantum photonics
single-photon sources
quantum dots
Sparrow Quantum
Ruhr University Bochum

By Fabianno Intelligence
6 min read

The reporting

A Half-Gigahertz Photon Source Is Bright. Its Quantum Quality Is the Harder Test