English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Rydberg atoms have shown significant promise as the basis for highlysensitive detectors of continuous radio-frequency (RF) E-fields. Here, we studytheir time-dependent response to pulse-modulated RF E-fields at 19.4 GHz usinga cesium vapour cell at room temperature. We use density matrix simulations toexplain the time scales that shape the transient atomic response underdifferent laser conditions, finding them to be limited by dephasing mechanismsincluding transit time broadening, Rydberg-Rydberg collisions, and ionization.Using a matched filter, we demonstrate the detection of individual pulses withdurations from 10 $\mu$s down to 50 ns and amplitudes from 15000 $\mu$Vcm$^{-1}$ down to ~170 $\mu$V cm$^{-1}$, corresponding to a sensitivity of ~240nV cm$^{-1}$ Hz$^{-1/2}$. Finally, we highlight the potential of a Rydbergvapour cell as a receiver by detecting pulse trains from a rotating emitter ona simulated passing aircraft.

The Origins of Rydberg Atom Electrometer Transient Response and its Impact on Radio Frequency Pulse Sensing