Unambiguous state discrimination in high dimensions

Franke-Arnold, S. and Jeffers, J. (2012) Unambiguous state discrimination in high dimensions. European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics, 66 (7). -. ISSN 1434-6060

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Abstract

We propose methods for the unambiguous discrimination of quantum states encoded in the spatial profile of light modes, in particular in the orbital angular momentum of light. Perfect discrimination between quantum states is possible only between orthogonal states of a known basis system. Generalised measurement strategies have been developed for the distinction between non-orthogonal states in a two-dimensional state space, e. g. the polarisation of light. Here we consider information encoded in superpositions of orbital angular momentum states of light, defined within an infinite-dimensional state space. Generalised measurements will be an important addition to quantum communication in high-dimensional spaces.

Author(s):Franke-Arnold, S. and Jeffers, J.
Item type:Article
ID code:41381
Keywords:quantum states , orbital angular momentum , light, polarisation, Optics. Light, Atomic and Molecular Physics, and Optics
Subjects:Science > Physics > Optics. Light
Department:Faculty of Science > Physics
Depositing user: Pure Administrator
Date deposited:11 Oct 2012 13:59
Last modified:03 Jan 2019 13:24
Related URLs:
URI:https://strathprints.strath.ac.uk/id/eprint/41381
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