Publication details

Simulation of exponential decay on simple quantum circuits: a case study

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Year of publication 2003
Type Article in Periodical
Magazine / Source Journal of Optics B
MU Faculty or unit

Faculty of Informatics

Field Informatics
Keywords exponential decay
Description One of potential applications of quantum processors should be a simulation of dynamics of quantum systems. In this paper we analyse whether it is possible to simulate a paradigmatic model of an exponential decay of a two-level system using a programmable quantum gate array. That is, we would like to simulate the decay of a two-level system in such a way that the parameters of the decay itself are encoded in the state of the ancilla that serves as a program for the programmable gate array. We show that it is impossible to simulate the exponential decay precisely with the finite-dimensional programmable gate array. On the other hand, we present a very simple model of a Markovian decay process that can be efficiently simulated on a simple programmable gate array. We compare this Markovian process with the exponential decay.
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