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For three trine states|ψ i⟩with prior probabilitiesp i = 1/3, the Helstrom bound gives: P (1) correct = 1 3 3X i=1 ⟨ψi|Πi|ψi⟩, (C3) where{Π i}is the optimal POVM

Optimal POVM for three symmetric states (Helstrom solution) ForKequally likely symmetric pure states forming a representation of a cyclic group, the optimal measurement is known

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Ternary Quantum Eraser Cryptography

quant-ph · 2026-04-14 · unverdicted · novelty 7.0

Ternary quantum eraser protocol with 120° polarization states in three-photon randomized transmissions bounds eavesdropper success at 54% against individual attacks.

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  • Ternary Quantum Eraser Cryptography quant-ph · 2026-04-14 · unverdicted · none · ref 10

    Ternary quantum eraser protocol with 120° polarization states in three-photon randomized transmissions bounds eavesdropper success at 54% against individual attacks.