Sharing quantum indistinguishability with multiple parties

• URL: http://arxiv.org/abs/2512.15199v1
• Date: Wed, 17 Dec 2025 08:49:49 GMT
• Title: Sharing quantum indistinguishability with multiple parties
• Authors: Lemieux Wang, Hanwool Lee, Joonwoo Bae, Kieran Flatt,
• Abstract summary: We present a sequential state-discrimination scheme that enables multiple parties to share quantum uncertainty.<n>We show how our scheme would work through a number of examples where ensembles may or may not contain symmetries.
• Score: 0.8024955346582039
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum indistinguishability of non-orthogonal quantum states is a valuable resource in quantum information applications such as cryptography and randomness generation. In this article, we present a sequential state-discrimination scheme that enables multiple parties to share quantum uncertainty, in terms of the max relative entropy, generated by a single party. Our scheme is based upon maximum-confidence measurements and takes advantages of weak measurements to allow a number of parties to perform state discrimination on a single quantum system. We review known sequential state discrimination and show how our scheme would work through a number of examples where ensembles may or may not contain symmetries. Our results will have a role to play in understanding the ultimate limits of sequential information extraction and guide the development of quantum resource sharing in sequential settings.

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