Noise spectroscopy with a Rydberg ensemble in a hot atomic vapor cell

He, Jun; Liu, Qiang; Yang, Ze; Niu, Qiqi; Ban, Xiaojuan; Wang, Junmin

doi:10.1103/physreva.104.063120

Cited by 8 publications

(4 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A sub-Doppler spectrum of the 6S 1/2 →6P 3/2 →72S 1/2 Rydberg EIT signal was obtained using counterpropagating excitation beams from the probe and coupling lasers. The typical EIT linewidth measures several tens of megahertz [7,12,28,29], which is considerably larger than the spontaneous emission linewidth of Rydberg states. These spectral broadenings include spontaneous emission broadening of the intermediate levels and power broadening of the coupling laser beam, the latter of which can be converted into two-photon detuning using the EIT scheme, resulting in a velocitydependent residual Doppler effect.…”

Section: Resultsmentioning

confidence: 98%

“…In principle, auxiliary field dressings can recover the coupling near the homogeneous or spontaneous decay limits in a room-temperature atom ensemble; however, in practice, Rydberg atoms are susceptible to excitation and stray environmental electromagnetic fields. Blackbody radiation can couple adjacent Rydberg states in atom ensembles at room temperature, thereby causing energy shifts or mixing [12,32]. Moreover, optical pumping and polarization introduce polarization broadening of the magnetic quantum number m, which describes vector and tensor polarizabilities [33,34].…”

Section: Resultsmentioning

confidence: 99%

“…Sub-Doppler Rydberg EIT spectroscopy can be achieved using two-photon excitation. The power broadening of a coupling laser with a ladder-type EIT in a room-temperature ensemble can be converted into two-photon detuning or broadening [10][11][12][13]. This residual Doppler effect is further amplified as the wave vector mismatch between the probe and the coupling laser, which reduces the atomic absorption [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced microwave-atom coupling via quadrupole transition-dressed Rydberg atoms

Du,

Cong,

Liu

et al. 2024

Front. Phys.

Self Cite

View full text Add to dashboard Cite

The power broadening of a coupling laser can be converted into two-photon detuning by electromagnetically induced transparency (EIT), resulting in a residual Doppler effect. The residual Doppler effect in a ladder-type EIT in a room-temperature atom ensemble is further amplified through a wavelength mismatch effect between the probe and coupling laser beams, which reduces the atomic coupling of light or microwaves. We measured the Rydberg spectra of the electric dipole (E1) and electric quadrupole (E2) microwave transitions, demonstrating that the reduction in the Rydberg EIT signal can be recovered through far-off-resonance E2 microwave transition dressing and achieving an 8-dB enhancement in the Rydberg EIT signal. The frequency-dependent dressing of the E2 transition enables the shift of the dressed Rydberg states to be tuned, thereby providing a scalable approach to optimize the interaction between the Rydberg state and microwave field.

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced microwave-atom coupling via quadrupole transition-dressed Rydberg atoms

Du,

Cong,

Liu

et al. 2024

Front. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…由于低频电场波长较长, 传统滤波放大方法往往无法兼顾低频电磁场的高频特性 , 电场畸变会导致波形识别不准确、系统动态特性测量困难等问题 [5] . 近年来, 研究人员提出利用里德伯原子构建原子天线开展电磁场参数测量 [6][7][8][9][10] , 基于原子天线的测量方法可以将电磁场的场强测量通过光谱技术转换到频率测量上, 实现电磁场量值溯源, 因此原子天线技术广泛应用于电磁场参数测量领域. 里德伯原子是主量子数较大的高激发态原子, 其具有较大的极化率和电偶极矩, 对电磁场十分敏感 [11,12] .…”

unclassified

Measurement of low-frequency electric field waveform by Rydberg atom-based sensor

Zhang,

Qiao,

Liu

et al. 2024

Acta Phys. Sin.

Self Cite

View full text Add to dashboard Cite

The high polarizabilities of Rydberg atoms enable multi-dimensional parameter measurements of electromagnetic fields. In this paper we report an atomic antenna by employing Rydberg atoms in room-temperature cesium vapor cell. We employ the cascade-type two-photon excitation electromagnetically induced transparency (EIT) spectroscopy to measure the Rydberg energy levels. EIT is a destructive interference effect with a narrow linewidth, and it can be used to detect a small electric field by Autler-Townes splitting or Stark shifts.<br>In experiments, a low-frequency electric field with ~kHz frequency is introduced by using built-in electrode technique in the room-temperature atomic gas cell. The interaction between Rydberg atom and electric field induces the Stark shifts, where the electric field amplitude is converted into the corresponding two-photon detuning by EIT effect. Furthermore, the low-frequency electric field amplitude is converted into the corresponding intensity signal of probe beam in EIT spectroscopy, that allow to measure the electric field frequencies. Under weak electric field conditions, there is an approximate linear relationship between EIT transmission signal and input electric field amplitude, which enables to detect waveform, amplitude, and frequency parameter. We have demonstrated an atomic antenna with optical probing method. The EIT effect allows increasing the response bandwidth from ~MHz to hundreds of MHz with increasing the probe beam and coupling beam power. Under this condition, the EIT spectroscopy can extend a measure bandwidth to ~MHz, that will provide a scalable approach for high-frequency electric fields.

show abstract

Sensitivity of Rydberg microwave electrometry limited by laser frequency noise

Yang,

Yan,

et al. 2024

Phys. Rev. A

View full text Add to dashboard Cite

Noise spectroscopy with a Rydberg ensemble in a hot atomic vapor cell

Cited by 8 publications

References 28 publications

Enhanced microwave-atom coupling via quadrupole transition-dressed Rydberg atoms

Enhanced microwave-atom coupling via quadrupole transition-dressed Rydberg atoms

Measurement of low-frequency electric field waveform by Rydberg atom-based sensor

Sensitivity of Rydberg microwave electrometry limited by laser frequency noise

Contact Info

Product

Resources

About