We’ve already discussed photon squeezing, as I’m sure you’ll remember, but:

Toward a Perfect Single-Photon Source
October 7, 2020 | Physics 13, s127 |Rachel Berkowitz

Semiconductor quantum dot emits photons that are squeezed below the fundamental noise limit

Huh.

In the classical world, it was thought to be straightforward to generate a well-defined amount of radiation in a given time period.

Yes, we all assumed that. Naturally!

But at the quantum scale, inherent uncertainty in a photon’s energy and phase reduces that precision and results in a blurred photon count.

Uh….

To solve this problem, Wang and his colleagues designed a photon source that could eliminate the blurring.

Right-o!

The researchers coupled a semiconductor quantum dot to the center of a
2-μm-diameter cavity using tiny micropillars. When excited by a laser, the quantum dot emitted photons, which were tightly confined in the cavity.

Sgt. Foley from An Officer and a Gentleman: “Stop whispering, Sweet Pea: . . . “

This confinement helped reduce photon loss when the photons were subsequently funneled into an optical fiber and measured with a semiconducting nanowire detector.

Jeese Louise!

This so-called squeezing reduced the intensity of the fluctuations by about 13% compared with an unconfined source.

So, yeah. Just as I thought.