Description
Improving the bandwidth of Rydberg atom-based receivers is an ongoing challenge owing to the long-lived Rydberg state lifetimes that limit the refresh rate of ground state atoms.In particular, the LO-based Rydberg mixer approach allows for bandwidths into the few-MHz range.Here we use heterodyne detection of the Rydberg atom receiver probe laser to separate the negative and positive sidebands that originate from distinct six wave mixing processes in order to investigate their individual bandwidths.We experimentally confirm the prediction that the negative sideband exhibits a higher bandwidth than the positive sideband.We further explore the effect of coupling and probe laser Rabi frequency on the bandwidth, which we find to be in good agreement with our model. We achieved a maximum experimental (and theoretical) bandwidth of about 11 (11)~MHz and 3.5 (5)~MHz for the negative and positive sidebands, respectively, from the -3dB roll-off point for optimized field parameters.This work provides insight into the bandwidth-limiting features of Rydberg atom receivers and points the way towards further optimization of their response.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| 3366_README | Text | 3366_README.txt | Open resource |
| Probe transmission for various RF signal field detuning | CSV | FIG1d.csv | Open resource |
| EIT spectra for different coupling Rabi frequencies | CSV | FIG2a.csv | Open resource |
| EIT spectra for different probe Rabi frequencies | CSV | FIG2b.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 1.66 MHz and 9.87 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3a_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 1.66 MHz and 9.87 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3a_positive.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 1.66 MHz and 9.87 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3b_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 1.66 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3b_positive.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 4.06 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3c_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 4.06 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG3c_positive.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 8.03 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4a_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 8.03 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4a_positive.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 24.15 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4b_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 24.15 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4b_positive.csv | Open resource |
| Negative sideband amplitude versus RF LO power for 28.17 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4c_negative.csv | Open resource |
| Positive sideband amplitude versus RF LO power for 28.17 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG4c_positive.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 1.66 MHz and 9.87 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5a.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 1.66 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5b.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 4.06 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5c.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 8.05 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5d.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 24.16 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5e.csv | Open resource |
| Normalized transmission versus RF signal field detuning for 28.17 MHz and 18.02 MHz of probe and coupling Rabi frequency respectively | CSV | FIG5f.csv | Open resource |
| Comparison between experimental and theoretical bandwidths as a function of coupling Rabi frequency | CSV | FIG6a.csv | Open resource |
| Comparison between experimental and theoretical bandwidths as a function of probe Rabi frequency | CSV | FIG6b.csv | Open resource |