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Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 Session D00
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Progress on deployable high-sensitive Rydberg-atom microwave receivers and its applications

Poster 12
Presenter: Haoquan Fan (Infleqtion Inc.)
Authors: Eric Bottomley (Infleqtion Inc.), Shane Verploegh (Infleqtion Inc.), Seth Caliga (Infleqtion Inc.)
Collaboration: Infleqtion Inc., 3030 Sterling Cir, Boulder, CO 80301

We are developing Rydberg-atom microwave receivers with high sensitivity into portable devices for different types of applications. We designed a hybrid Rydberg-atom microwave receiver using a resonant waveguide cavity coupled with Rydberg atoms in a vapor cell. The hybrid receiver obtains enhancement in sensitivity of a factor of 14.2 in field of amplitude, as well as 650 MHz of frequency tunability working on ~10 GHz with an intrinsic Q-factor of 700. The noise equivalent field for the cavity receiver is NEF=1.58 µV/m/√Hz.  Improved performance matched with a well-engineered cavity could significantly improve performance in sensitivity. At the same time, we demonstrated sub-wavelength angle-of-arrival detection using 3-color, all near-infrared excitation with Rydberg atoms. The angle-of-arrival is extracted by comparing phase difference between 2 detection channels with an error < 1o. The all-near-infrared method allows the microwave receiver to employ portable rack-mounted lasers and electronics for deployable applications.

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