Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz · HackerPapers discussions

Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz — mentioned by mikewarot

Thu, 06 Apr 2023 11:08:10 GMT

What we've got here is a lot of marketing fluff around a Rydberg spectrum analyzer.[1][1a]. This is essentially an RF mixer[2] which, according to [1a]: rivals the performance of commercially-available spectrum analyzers with high sensitivity, 4 MHz instantaneous bandwidth, and over 80 dB of linear dynamic range. While 80 dB of linear dynamic range is good, there are other designs, such as the Tayloe mixer[3][4] that are more sensitive and have a better dynamic range due to their inherently linear nature. Careful reading of the linked paper shows that their best sensitivity measurements rely…

Paper and discussion history. A mention is not an endorsement.

Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz — mentioned by superkuh

Sun, 07 Feb 2021 02:22:12 GMT

It's not an antenna like I thought at first. It's a tuner with 4 MHz instantaneous bandwidth and a very wide tuning range, https://arxiv.org/abs/2009.14383 - the actual (laser intensity) measurements are done within the RF electrical field above a coplanar waveguide track on a PCB. It's a cool RF tuner. But it still need a real, full size, antenna. It's also not clear to me if they can get the phase informations out of the laser intensity measurements. I suppose it's all a matter of how fast they can sample the light.

Paper and discussion history. A mention is not an endorsement.

Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz — mentioned by qwantim1

Sun, 07 Feb 2021 02:10:36 GMT

Did you read the paper? https://arxiv.org/pdf/2009.14383.pdf

Paper and discussion history. A mention is not an endorsement.

Waveguide-coupled Rydberg spectrum analyzer from 0 to 20 GHz — mentioned by mattkrause

Sat, 06 Feb 2021 22:44:51 GMT

Preprint of the paper described in the article: https://arxiv.org/abs/2009.14383

Paper and discussion history. A mention is not an endorsement.