Tiny device enables new record in super-fast quantum light detection

EurekAlert  November 9, 2020
An international team of researchers (UK, France) has made a new miniaturized device by interfacing CMOS-compatible silicon and germanium-on-silicon nanophotonics with silicon-germanium integrated amplification electronics. The detector has a 3 dB bandwidth of 1.7 GHz, is shot noise limited to 9 GHz and has a miniaturized required footprint of 0.84 mm2. The detector can measure the continuous spectrum of squeezing from 100 MHz to 9 GHz of a broadband squeezed light source pumped with a continuous-wave laser. The research provides fast, multipurpose, homodyne detectors for continuous-variable quantum optics, and opens the way to full-stack integration of photonic quantum devices…read more. TECHNICAL ARTICLE

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