Eur. Phys. J. D 64, 579-583 (2011)
https://doi.org/10.1140/epjd/e2011-20367-9

Regular Article

Simple adaption of measurements for qudit estimation

Institut für Quantenphysik, Universität Ulm, 89069 Ulm, Germany

^a e-mail: christof.happ@uni-ulm.de

Received: 15 June 2011
Received in final form: 26 July 2011
Published online: 6 October 2011

Abstract

We present a strategy for estimation of d-level quantum states and for the simple adaption of corresponding measurements. The adaption method is inspired by mutually unbiased measurements, but it is also applicable in cases for which no complete set of mutually unbiased bases is known. We present results of Monte Carlo simulations, that demonstrate the fidelity gain of the adaptive strategy compared to a non-adaptive estimation.