Digital communication with Rydberg atoms and amplitude-modulated microwave fields

被引：206

作者：

Meyer, David H. ^{[1
,2
]}

Cox, Kevin C. ^{[2
]}

Fatemi, Fredrik K. ^{[2
]}

Kunz, Paul D. ^{[2
]}

机构：

[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[2] US Army Res Lab, Sensors & Electron Devices Directorate, Adelphi, MD 20783 USA

来源：

APPLIED PHYSICS LETTERS | 2018年 / 112卷 / 21期

关键词：

ELECTROMETRY; EXCITATION;

D O I：

10.1063/1.5028357

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Rydberg atoms, with one highly excited, nearly ionized electron, have extreme sensitivity to electric fields, including microwave fields ranging from 100MHz to over 1 THz. Here, we show that roomtemperature Rydberg atoms can be used as sensitive, high bandwidth, microwave communication antennas. We demonstrate near photon-shot-noise limited readout of data encoded in amplitude-modulated 17 GHz microwaves, using an electromagnetically induced-transparency (EIT) probing scheme. We measure a photon-shot-noise limited channel capacity of up to 8.2 Mbit s(-1) and implement an 8-state phase-shift-keying digital communication protocol. The bandwidth of the EIT probing scheme is found to be limited by the available coupling laser power and the natural linewidth of the rubidium D2 transition. We discuss how atomic communication receivers offer several opportunities to surpass the capabilities of classical antennas. Published by AIP Publishing.

引用

页数：5

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