Realization of a Laser Cooled Microwave Power Standard (conference   digest)
  We demonstrate the feasibility of a novel microwave power standard based on the electromagnetic interaction with cold atoms. Under the effect of the radiation, the internal state populations will undergo a Rabi oscillation. The measurement of its frequency will allow the determination of the electromagnetic field strength. 
David C. Paulusse, Nelson L. Rowell and Alain Michaud