Controlling the Decoherence of a “Meter” via Stroboscopic Feedback

Abstract

We propose a simple modification of the experimental scheme employed by Brune et al. [Phys. Rev. Lett. 77, 4887 (1996)] for the generation and detection of a Schr\"odinger cat state, in which the decoherence of the cat state can be significantly slowed down using an appropriate feedback.