Reformulation of the quantum Zeno effect for exponentially decaying systems
Hayato Goto, Kouichi Ichimura · Physical Review A · 2008
The quantum Zeno effect for exponentially decaying systems predicted by Koshino Shimizu [Phys. Rev. Lett. 92, 030401 (2004)] is reexamined. A formula for the instantaneous decay rate reduced by the quantum Zeno effect is derived in the case of an exponentially decaying system. The present approach is based on the standard approaches in quantum optics: a master equation and a quantum Langevin equation. This approach provides a phenomenological interpretation of the Koshino-Shimizu model.