Re: A Bi-CMOS electronic photonic integrated circuit quantum light detector

On 5/30/24 06:56, Jan Panteltje wrote:

World's smallest quantum light detector on a silicon chip
  https://www.sciencedaily.com/releases/2024/05/240517164111.htm
Source:
  University of Bristol
Summary:
  Researchers have made an important breakthrough in scaling quantum technology by integrating the world's tiniest quantum light detector onto a silicon chip.
 Interesting is the circuit, figure 1 in
  https://www.science.org/doi/10.1126/sciadv.adk6890
 the photo diodes dare used as pull-up and pull down to teh transistor base.
 Quantum talk everywhere,
but interesting noise cancellation after the beam splitter.
Anybody knows the basics of this?

The very first word of their abstract has a spelling error. That
doesn't bode well for the rest.
Anyway, it appears the quantum crowd is discovering the advantages
of synchronous detection, as has been used for ages in lock-in
amplifiers. They call it 'homodyne'. OK, fine.
Jeroen Belleman