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New quantum receiver the first to detect entire radio frequency spectrum

phys.org

11–20 of 79 posts

Re: New quantum receiver the first to detect entire radio frequency spectrum

#11

Pretty big win for RF. Peak sensitivity -145 dBm/Hz. Little bit of a stretch to say entire RF spectrum, but 0 -> 20 GHz is still really cool.

Right. If it went into the terahertz range, it would help open up that area. 5G cell phones go higher than 20GHz than that.

Re: New quantum receiver the first to detect entire radio frequency spectrum

#12

Does anyone have insight into why this is published in the open literature, if it is such a militarily-exploitable advance?

i dont think we have any enemies questioning whether or not we listen to radio frequencies?

Re: New quantum receiver the first to detect entire radio frequency spectrum

#13
post #11

Pretty big win for RF. Peak sensitivity -145 dBm/Hz. Little bit of a stretch to say entire RF spectrum, but 0 -> 20 GHz is still really cool.

Right. If it went into the terahertz range, it would help open up that area. 5G cell phones go higher than 20GHz than that.

Even so, this is pretty impressive, not all that long ago this device would be SF and people would doubt it would ever exist.

Re: New quantum receiver the first to detect entire radio frequency spectrum

#14
post #3

Miniaturization and ruggedization for practical applications will require a lot of work. Not only are the atoms contained in a heated tube, but, unlike atomic clocks, sophisticated tunable laser technology must also be employed. So only very high value missions, like large satellites or ground installations are practicable.

This is how every tech breakthrough starts. Remember when lasers required high vacuum tubes and high voltage power supplies with ridiculous specs, serious glass making skills and pretty much daily cleaning of all the optics? And now they are just about everywhere and cost pennies.

Re: New quantum receiver the first to detect entire radio frequency spectrum

#17

Does anyone have insight into why this is published in the open literature, if it is such a militarily-exploitable advance?

what if they know/calculate what is implied into development/utilization so they know no one but them (or the same class opponent) could replicate it

Re: New quantum receiver the first to detect entire radio frequency spectrum

#18
Another StarTrek tech entering the reality realm.

When Voyager stumbled upon a industrial-age civilization Kim immediately notified Janeway that he's detecting "Old style" FM broadcasts. I recall thinking "why would a 24th century subspace-communicator equipped star ship even monitor those?"

I got my answer, quantum receivers, they monitor everything.

Re: New quantum receiver the first to detect entire radio frequency spectrum

#19
My company can create some of the highest density cold Rydberg (Cs) atom setups in the world. We use our tech for focused ion beams, but I'm interested in this application. Our equipment isn't 'miniature' but everything is in a single 19" rack.

If anyone who is an expert on the RF side wants to drop ideas below or contact me at adam@zerok.com to brainstorm please feel free.

Re: New quantum receiver the first to detect entire radio frequency spectrum

#20
post #11

Earlier quoted context omitted.

Right. If it went into the terahertz range, it would help open up that area. 5G cell phones go higher than 20GHz than that.

Even so, this is pretty impressive, not all that long ago this device would be SF and people would doubt it would ever exist.

Not that long ago, the radios in a cell phone would be SF.
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