Quantum Zeno effect and parametric resonance in mesoscopic physics

As a realization of the quantum Zeno effect, we consider electron tunneling between two quantum dots with one of the dots coupled to a quantum point c ontact detector. The coupling leads to decoherence and to the suppression o f tunneling. When the detector is driven with an ac voltage, a parametric r esonance occurs which strongly counteracts decoherence. We propose a novel experiment with which it is possible to observe both the quantum Zeno effec t and the parametric resonance in electric transport.