We derive fidelity tradeoffs for probabilistic minimal disturbance measurements for certain discrete sets of symmetrical single qubit states. We propose and experimentally demonstrate a simple linear optical scheme saturating these tradeoffs in which the degree of disturbance is controlled only by measurement of a single ancillary photon.
Probabilistic minimal disturbance measurement of symmetrical qubit states / R., Filip; L., Mita Jr; DE MARTINI, Francesco; Marco, Ricci; Sciarrino, Fabio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 74:5(2006), pp. 052312-1-052312-9. [10.1103/physreva.74.052312]
Probabilistic minimal disturbance measurement of symmetrical qubit states
DE MARTINI, Francesco;SCIARRINO, Fabio
2006
Abstract
We derive fidelity tradeoffs for probabilistic minimal disturbance measurements for certain discrete sets of symmetrical single qubit states. We propose and experimentally demonstrate a simple linear optical scheme saturating these tradeoffs in which the degree of disturbance is controlled only by measurement of a single ancillary photon.File allegati a questo prodotto
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