2026-06-01T02:02:07Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/596742023-08-25T12:40:37Zcom_20.500.14352_14col_20.500.14352_15

Zeno and anti-Zeno effects in multimode parametric down-conversion Luis Aina, Alfredo ©2002 The American Physical Society. I thank Professor J. Peřina and Dr. J. Řeháček for a careful reading of the manuscript and valuable suggestions. We present a simple multimode analysis of the Zeno and anti-Zeno effects in spontaneous parametric down-conversion. In this process the input vacuum is an unstable state decaying into a reservoir of down-converted modes by emitting a pair of photons. We show that the Zeno and the anti-Zeno effects are two particular examples of quantum propagation depending on the effective spectrum of down-converted modes. We show that this evolution can be easily tailored on demand and that these quantum phenomena admit a very simple explanation in terms of standard interference concepts. 2023-06-20T20:08:49Z 2023-06-20T20:08:49Z 2002-07-02 journal article 1050-2947 10.1103/PhysRevA.66.012101 https://hdl.handle.net/20.500.14352/59674 http://journals.aps.org/pra/abstract/10.1103/PhysRevA.66.012101 http://journals.aps.org/ eng open access American Physical Society