title: An experimental proposal for revealing contextuality in almost all qutrit states.
abstract: Contextuality is a foundational phenomenon underlying key differences between quantum theory and classical realistic descriptions of the world. Here we propose an experimental test which is capable of revealing contextuality in all qutrit systems, except the completely mixed state, provided we choose the measurement basis appropriately. The 3-level system is furnished by the polarization and spatial degrees of freedom of a single photon, which encompass three orthogonal modes. Projective measurements along rays in the 3-dimensional Hilbert space are made by linear optical elements and detectors which are sensitive to single mode. We also discuss the impact of detector inefficiency and losses and review the theoretical foundations of this test.
authors.affiliation: Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore.
authors.forename: Jayne
authors.initials: J
authors.lastname: Thompson
authors.forename: Robert
authors.initials: R
authors.lastname: Pisarczyk
authors.forename: Paweł
authors.initials: P
authors.lastname: Kurzyński
authors.forename: Dagomir
authors.initials: D
authors.lastname: Kaszlikowski
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