Highlight: On the Hunt for Darkish Matter With Quantum Squeezing

Credit score:

M. Malnou and D. Schmidt/NIST


Look out darkish matter, right here come the detectives. This NIST amplifier, which measures tiny electrical currents, has boosted the seek for the mysterious darkish matter believed to represent a lot of the stuff within the universe.

One idea is that darkish matter could be axions, hypothetical particles which might be lighter in mass and decrease in power than any matter but discovered. An axion would generate a feeble electrical discipline at an unknown frequency, so scientists need to scan a broad frequency vary to detect a tiny energy blip. It’s a needle-in-a-haystack situation demanding the utmost precision.

Now, scientists collaborating within the (aptly named) Yale College axion search mission HAYSTAC have simply doubled the search fee for axions of a sure mass with document sensitivity, thanks partly to NIST concepts and gadgets.

HAYSTAC sped up the search with the NIST concept to make use of a method referred to as quantum squeezing, which improves sensitivity by squeezing noise that interferes with measurements out of the related components of the experiment. The NIST amplifiers ready an electromagnetic discipline in a squeezed state after which, after it bounced off an empty tank by which microwaves circulated, measured the noiseless outcomes.

We have now a fair nearer eye on the HAYSTAC now. Discover out extra in regards to the seek for the elusive needle (further collaborators: UC Berkeley, College of Colorado Boulder).

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