Here’s some background on the concept: https://physics.aps.org/articles/v8/18 https://physics.aps.org/articles/v8/18 Basic idea is that you send out a microwa

Here’s some background on the concept: https://physics.aps.org/articles/v8/18 https://physics.aps.org/articles/v8/18 Basic idea is that you send out a microwave signal and at the same time send entangled microwaves/photons (in the microwave band) into a trap where they basically spin around “idling”/waiting for the potential weak signal to come back. You then feed both the returned signal which is super weak and the idled signal into a josephsen parametric converter. Basically an amplifier based upon a Josephsen junction. The result is that using that type of amplifier it amplifies signals that are quantum entangled more than it amplifies non entangled signals. And you get increased SNR on your signal you get back. So the microwave still has to hit the target and bounce back to you / receiver station you just can use a much weaker signal to transmit the microwave and as a result it acts similarly to passive radar that uses ambient RF to detects objects in the air.