Eur. Phys. J. Plus (2019) 134: 327
https://doi.org/10.1140/epjp/i2019-12712-1

Regular Article

Ramsey interferometers as a test of open system evolution or a modified quantum-mechanical model

¹ Department of Physics, Sharif University of Technology, Tehran, Iran
² School of Physics, Institute for Research in Fundamental Sciences (IPM), P. O. Box 19395-5531, Tehran, Iran
³ Department of Physics, K.N. Toosi University of Technology, 15875-4416, Tehran, Iran

^* e-mail: firouzjaee@kntu.ac.ir

Received: 14 November 2018
Accepted: 29 April 2019
Published online: 11 July 2019

Abstract

By applying the basic concept of the density matrix in an open quantum system and modification of quantum mechanics, we derive the Kossakowski-Lindblad equation, and different properties of this equation are reviewed. Next, a pedagogical approach is used to present Ramsey's trick for the linear modification of quantum mechanics. We discuss how an open quantum mechanics or its modification changes the fraction of excited states in Ramsey Interferometers.