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

World's smallest quantum light detector on a silicon chip

>

formatting link

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
>

formatting link

> 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