Sensitivity enhancement of far-detuned RF field sensing based on Rydberg atoms dressed by a near-resonant RF field

Yao, Jiawei; An, Qiang; Zhou, Yan‐Li; Yang, Kai; Wu, Feng-Chuan; Fu, Yunqi

doi:10.1364/ol.465048

Cited by 16 publications

(4 citation statements)

References 26 publications

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“…It achieves the minimum detectable electric field strength of 37.3 µV•cm −1 with a sensitivity of up to −65 dBm•Hz −1 and a linear dynamic range over 65 dB [61]. This mechanism was also employed to improve the detection sensitivity of a 500 MHz far-detuned RF field with Rydberg atoms dressed by a near-resonant MW Efield [62]. On this basis, an off-resonant heterodyne method, where a strong far off-resonant field acts as an LO field and the incident weak signal field with a few hundreds of kHz difference from the LO field is mixed in the Rydberg atom vapor cell, was used.…”

Section: Superheterodyne Quantum Sensing With Microwave-dressed Rydbe...mentioning

confidence: 99%

Quantum sensing of microwave electric fields based on Rydberg atoms

Yuan,

Yang,

Jing

et al. 2023

Rep. Prog. Phys.

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Microwave electric ﬁeld sensing is of importance for a wide range of applications in areas of remote sensing, radar astronomy and communications. Over the past decade, Rydberg atoms, owing to their exaggerated response to microwave electric ﬁelds, plentiful optional energy levels and integratable preparation methods, have been used in ultra-sensitive, wide broadband, traceable, stealthy microwave electric ﬁeld sensing. This review ﬁrst introduces the basic concept of quantum sensing, properties of Rydberg atoms and principles of quantum sensing of microwave electric ﬁelds with Rydberg atoms. Then an overview of this very active research direction is gradually expanded, covering progresses of sensitivity and bandwidth in Rydberg atoms based microwave sensing, superheterodyne quantum sensing with microwave-dressed Rydberg atoms, quantum-enhanced sensing of microwave electric ﬁeld, recent advanced quantum measurement systems and approaches to further improve the performance of microwave electric ﬁeld sensing. Finally, a brief outlook on future development directions is discussed.

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Section: Superheterodyne Quantum Sensing With Microwave-dressed Rydbe...mentioning

confidence: 99%

Quantum sensing of microwave electric fields based on Rydberg atoms

Yuan,

Yang,

Jing

et al. 2023

Rep. Prog. Phys.

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“…In the past ten years, Rydberg atomic microwave sensors [1][2][3] have made significant progress due to ravishing characteristics that classical radio-frequency (RF) microwave (MW) technology does not have, including self-calibration, [4] high sensitivity, [5,6] broad operation frequency. [2,[7][8][9][10] It has a wide range of applications, such as sensors for communication signals (amplitude modulated, [11][12][13] frequency modulated, [14] phase modulated signals [15][16][17] ), Rydberg microwave frequency comb spectrometer, [18] and imaging.…”

Section: Introductionmentioning

confidence: 99%

Dependence of Rydberg-atom-based sensor performance on different Rydberg atom populations in one atomic-vapor cell

Wu 武,

Yao 姚,

Wu 吴

et al. 2024

Chinese Phys. B

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The atomic-vapor cell is a vital component for Rydberg atomic microwave sensors, and impacts on overall capability of Rydberg sensor. However, the conventional analysis approach on effect of vapor-cell length contains two implicit assumptions, that is, the same atomic population density and buffer gas pressure, which make it unable to accurately capture actualA response about effect of Rydberg-atom-based sensor performance on different Rydberg atom population. Here, utilizing a stepped cesium atomic-vapor cell with five different dimensions at the same atomic population density and buffer gas pressure, the height and full width at half maximum of Electromagnetically Induced Transparency(EIT) signal, and the sensitivity of the atomic superheterodyne sensor are comprehensively investigated at the same Rabi frequences(saturated laser power) conditions. It is identified that EIT signal height is proportional to the cell length, full width at half maximum and sensitivity grow with the increment of cell length to a certain extent. Based on the coherent integration signal theory and atomic linear expansion coefficient method, theoretical analysis of the EIT height and sensitivity are further investigated. The results could shed new light on the understanding and design of ultrahigh-sensitivity Rydberg atomic microwave sensors and find promising applications in quantum measurement, communication, and imaging.

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“…Rydberg atoms are promising candidates for microwave (MW) electric field measurements owing to their high polarizability and strong electric dipole moments [1][2][3][4][5][6][7][8][9]. In a room-temperature atomic ensemble of Cs atoms, the inhomogeneous broadening of Doppler effect σ (~350 MHz) is larger than the homogeneous broadening of the spontaneous decay linewidth Γ of the 6P state (~5.2 MHz).…”

Section: Introductionmentioning

confidence: 99%

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

Du,

Cong,

Liu

et al. 2024

Front. Phys.

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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.

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Sensitivity enhancement of far-detuned RF field sensing based on Rydberg atoms dressed by a near-resonant RF field

Cited by 16 publications

References 26 publications

Quantum sensing of microwave electric fields based on Rydberg atoms

Quantum sensing of microwave electric fields based on Rydberg atoms

Dependence of Rydberg-atom-based sensor performance on different Rydberg atom populations in one atomic-vapor cell

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

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