Precise measurement of microwave polarization using a Rydberg atom-based mixer

Wang, Yu han; Jia, Feng-Dong; Hao, Jianhai; Cui, Yue; fei, zhou; Liu, Xiubin; Mei, Jun; Yu, Yonghong; Liu, Ya; Zhang, Jian; Xie, Feng; Zhong, Zhimei

doi:10.1364/oe.485662

Cited by 7 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This quality makes them ideal quantum sensors for precise MW measurements. In recent years, Rydberg atom-based microwave electric field sensors have witnessed rapid development in various fields, including extreme weak field measurement, [23,24] power frequency measurement, [25] phase measurement, [26] polarization measurement, [18] and more. Through Rydberg electromagnetically-induced transparency (EIT), the introduction of MW induces the splitting of Rydberg atomic energy levels, leading to Autler-Townes (AT) splitting in EIT.…”

Section: Introductionmentioning

confidence: 99%

Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulation

Hao 郝,

Jia 贾,

Cui 崔

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

We have theoretically and experimentally studied the dispersive signal of the Rydberg atomic electromagnetically induced transparency (EIT) - Autler-Townes (AT) splitting spectra obtained using amplitude modulation of the microwave (MW) electric field. In addition to the two zero-crossing points interval $\Delta f_{\text{zeros}}$, the dispersion signal has two positive maxima with an interval defined as the shoulder interval $\Delta f_{\text{sho}}$, which is theoretically expected to be used to measure a much weaker MW electric field. The relationship of MW field strength $E_{\text{MW}}$ and $\Delta f_{\text{sho}}$ are experimentally studied at the MW frequencies of 31.6 GHz and 9.2 GHz respectively. The results show that $\Delta f_{\text{sho}}$ can be used to character the much weaker $E_{\text{MW}}$ than that of $\Delta f_{\text{zeros}}$ and the traditional EIT-AT splitting interval $\Delta f_{\text{m}}$, the minimum $E_{\text{MW}}$ measured by $\Delta f_{\text{sho}}$ is about 30 times smaller than that by $\Delta f_{\text{m}}$. As an example, the minimum $E_{\text{MW}}$ at 9.2 GHz that can be characterized by $\Delta f_{\text{sho}}$ is 0.056 mV/cm, which is the minimum value characterized by frequency interval using vapour cell without adding any auxiliary fields. The proposed method can improve the weak limit and sensitivity of $E_{\text{MW}}$ measured by spectral frequency interval, which is important in the direct measurement of weak $E_{\text{MW}}$.

show abstract

Section: Introductionmentioning

confidence: 99%

Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulation

Hao 郝,

Jia 贾,

Cui 崔

et al. 2024

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

RF spectra induced by different polarized microwave

You,

Cai,

Zhang

et al. 2024

AIP Advances

View full text Add to dashboard Cite

Electric field measurement techniques based on Rydberg atoms have proven to have unique advantages in high sensitivity and have drawn wide attention in microwave electric field metrology and communication. The Rydberg states employed for microwave sensing are usually excited by two- or three-step laser irradiation. It leads to the Rydberg atoms being populated by some specific magnetic quantum number states determined by the laser polarization configurations, whose further coupling to another Rydberg state is also constrained by the microwave polarization. Based on a three-laser optical excitation, we demonstrate this effect on the microwave spectra of the 85Rb transitions 41F7/2 → 42D5/2 and 41F7/2 → 41G7/2 at various combining polarization configurations. It shows a strong polarization dependence on the microwave spectrum and then affects the sensitivity of Rydberg atom-based microwave field sensing. Advisable polarization schemes for higher sensitivity are suggested by the two types of transitions.

show abstract

Independent Rydberg atom sensing using a dual-ladder scheme

Berweger,

Artusio-Glimpse,

Prajapati

et al. 2024

Applied Physics Letters

View full text Add to dashboard Cite

Rydberg atom-based electric field sensing can provide all-optical readout of radio frequency (RF) fields in a dielectric environment. However, because a single set of optical fields is typically used to prepare the Rydberg state and readout its response to RF fields, it is challenging to perform simultaneous and independent measurements of the RF field(s). Here, we show that using two independent schemes to prepare and readout the same Rydberg state can be used to perform independent measurements in general, which we demonstrate specifically by resolving the RF polarization. We expect this work will be useful for fiber-coupled sensor heads where spatial multiplexing is challenging as well as for complex multi-level sensing schemes.

show abstract

Precise measurement of microwave polarization using a Rydberg atom-based mixer

Cited by 7 publications

References 20 publications

Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulation

Microwave electrometry with Rydberg atoms in a vapor cell using microwave amplitude modulation

RF spectra induced by different polarized microwave

Independent Rydberg atom sensing using a dual-ladder scheme

Contact Info

Product

Resources

About