Rydberg atom based microwave sensing and communication

KaiYu, Liao; Tu, Hai-Tao; Zhang, Xin-Ding; Hui, Y. H.; Shi-Liang, Zhu

doi:10.1360/sspma-2020-0218

Cited by 2 publications

(1 citation statement)

References 67 publications

(86 reference statements)

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“…In recent years, quantum sensors based on Rydberg atoms have attracted more and more attention [1,] and have been successfully used to measure the electric field strength of radio-frequency (RF) field [2][3][4][5][6][7][8], the phase [9] and the polarization of RF field [10]. What is more interesting is that people have demonstrated the practical value of Rydberg electric field sensors in various aspects, such as RF communication [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The effect of the Doppler mismatch in microwave electrometry using Rydberg electromagnetically induced transparency and Autler–Townes splitting

fei¹,

Jia²,

Mei³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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We have systematically investigated the influence of the gas temperature (T), the Rabi frequencies of the probe laser (Ωp), the coupling laser (Ωc) and the radio-frequency (ΩRF) on the Rydberg electromagnetically induced transparency (EIT) and Autler-Townes (AT) splitting (Δf) by defining a general Doppler mismatch factor Dg=ΩRF/Δf in the Rydberg atom-based microwave electrometry. The effect of T on Dg is studied in detail from 0 to 1000 K, the results show that Dg is insensitive to T when T<10 μK or T>10 K, while Dg changes significantly with 10 K>T>10 μK. Then the effects of Ωp, Ωc and ΩRF on factor Dg at T=300 K (typical room temperature) and T=10 μK (typical temperature of cold atom by laser cooling) are studied in detail, respectively. The results show that the linewidth of Rydberg EIT (ΓEIT) can be used as a key parameter to characterize the dependence of Dg on Ωp and Ωc in both cases. Dg is insensitive to T, Ωp and Ωc when ΩRF>3ΓEIT which means that ΓEIT determines the lower limit of the linear region of the radio-frequency (RF) electric field strength measured by EIT-AT splitting. More interesting, the range where Dg is insensitive to Ωp and Ωc can be greatly expanded by lowering the gas temperature to 10 μK. The ranges of parameters where Dg is insensitive to T, Ωp, Ωc and ΩRF are given, and such relationship can be easily scaled to other atomic systems. The results can help the selection of various parameters in the experiments and specific applications to ensure the accuracy of measuring the RF electric field.

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Section: Introductionmentioning

confidence: 99%

The effect of the Doppler mismatch in microwave electrometry using Rydberg electromagnetically induced transparency and Autler–Townes splitting

fei¹,

Jia²,

Mei³

et al. 2022

J. Phys. B: At. Mol. Opt. Phys.

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A Rydberg atom-based amplitude-modulated receiver using the dual-tone microwave field

Yuan,

Jin,

Yan

et al. 2024

EPJ Quantum Technol.

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We propose a Rydberg atom-based receiver for amplitude-modulation (AM) reception utilizing a dual-tone microwave field. The pseudo-random binary sequence (PRBS) signal is encoded in the basic microwave field (B-MW) at the frequency of 14.23 GHz. The signal can be decoded by the atomic receiver itself but more obvious with the introduction of an auxiliary microwave (A-MW) field. The receiver’s amplitude variations corresponding to microwave field are simulated by solving density matrices to give this mechanism theoretical support. An appropriate AM frequency is obtained by optimizing the signal-to-noise ratio, guaranteeing both large data transfer capacity (DTC) and high fidelity of the receiver. The power of two MW fields, along with the B-MW field frequency, is studied to acquire larger DTC and wider operating bandwidth. Finally, the readout of PRBS signals is performed by both the proposed and conventional mechanisms, and the comparison proves the obvious increment of DTC with the proposed scheme. This proof-of-principle demonstration exhibits the potential of the dual-tone scheme and offers a novel pathway for Rydberg atom-based microwave communication, which is beneficial for long-distance communication and weak signal perception outside the laboratory.

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Rydberg atom based microwave sensing and communication

Cited by 2 publications

References 67 publications

The effect of the Doppler mismatch in microwave electrometry using Rydberg electromagnetically induced transparency and Autler–Townes splitting

The effect of the Doppler mismatch in microwave electrometry using Rydberg electromagnetically induced transparency and Autler–Townes splitting

A Rydberg atom-based amplitude-modulated receiver using the dual-tone microwave field

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