Rydberg atom-based electric field enhanced amplitude modulated wave receiving device and measurement method

Abstract

The invention discloses an electric field enhanced amplitude-modulated wave receiving device based on Rydberg atoms and a measuring method, the Rydberg atoms are excited by probe light and coupling light emitted by two lasers, and meanwhile, a strong electric field is applied as a gain electric field, so that the receiving sensitivity of the atoms to the electric field is greatly improved. Baseband signals to be transmitted are firstly converted into digital signals, each digital signal is provided with a frequency, then the digital signals are loaded into a carrier field in an amplitude modulation mode of different frequencies, an electromagnetic induction transparent spectrum is adopted to detect output signals, frequency signals are extracted through spectral analysis spectral lines, and the frequency signals are transmitted to the carrier field. And the frequency signals are converted into corresponding digital signals, so that the baseband signals can be read out. The method is suitable for carrier signals of any frequency, the technical problem that carrier communication of any frequency cannot be achieved in the prior art is solved, amplitude modulation measurement is converted into frequency measurement, and the defect that traditional amplitude modulation communication is prone to interference is overcome.

Description

technical field [0001] The invention relates to a technology of highly sensitive amplitude modulated wave receiving, in particular to an amplitude modulated wave receiving device and a measuring method based on the electric field enhancement of Rydberg atoms. Background technique [0002] As the main means of communication technology in the world today, wireless communication is of great significance in the fields of aerospace, national defense construction and daily life. The traditional AM communication is to load the baseband signal to be transmitted into the high-frequency carrier by AM mode for transmission, and then extract the transmitted signal by demodulation at the receiving end, but it is susceptible to external interference, and different frequencies The carrier needs to be replaced with a different receiving antenna. The emerging measurement method based on Rydberg atomic resonance EIT-AT spectrum, although it has high sensitivity, can only measure the electric...

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Problems solved by technology

The traditional AM communication is to load the baseband signal to be transmitted into the high-frequency carrier through the AM method for transmission, and then extract the transmitted signal through demodulation at the receiving end, but it is easily interfered by the outside world, and different frequencies The carrier needs to switch to a different receiving antenna

The emerging measurement method based on Rydberg atomic resonance EIT-AT spectroscopy has high sensitivity, but it can only measure the electric field at the resonant frequency with two Rydberg energy levels. The carrier bandwidth is very narrow, and it cannot realize arbitrary carrier Highly sensitive reception of frequency

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