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High-sensitive measurement of radio-frequency (RF) electric field isavailable via the electromagnetically induced transparency (EIT) effect ofRydberg atom at room-temperature, which has been developed to be a promisingatomic RF receiver. In this Letter, we investigate the credibility of thedigital communication via this quantum-based antenna over the entirecontinuously tunable RF-carrier. Our experiment shows that digitalcommunication at a rate of 500 kbps performs reliably within a tunablebandwidth of 200 MHz at carrier 10.22 GHz and a bit error rate (BER) appearsout of this range, for example, the BER runs up to 15 % at RF-detuning $\pm150$MHz. In the measurement, the time-variant RF field is retrieved by detectingthe density of the probe laser at the center frequency of RF-induced symmetricor asymmetric Autler-Townes splitting in EIT. Prior to the digital test, wehave studied the RF-receiving quality versus the physical ambiance and foundthat a choice of linear gain response to the RF-amplitude can suppress thesignal distortion and the modulating signal is able to be decoded as fast as upto 500 kHz in the tunable bandwidth. Our checkout consolidates the physicalfoundation for a reliable communication and spectrum sensing over the broadbandRF-carrier.

The credibility of Rydberg atom based digital communication over a continuously tunable radio-frequency carrier