Unambiguous discrimination of Fermionic states through local operations and classical communication

• URL: http://arxiv.org/abs/2009.05657v2
• Date: Thu, 21 Jan 2021 15:51:26 GMT
• Title: Unambiguous discrimination of Fermionic states through local operations and classical communication
• Authors: Matteo Lugli and Paolo Perinotti and Alessandro Tosini
• Abstract summary: The paper studies unambiguous discrimination of Fermionic states through local operations and classical communication (LOCC) We show that it is not always possible to distinguish two Fermionic states through LOCC unambiguously with the same success probability as if global measurements were allowed.
• Score: 68.8204255655161
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The paper studies unambiguous discrimination of Fermionic states through local operations and classical communication (LOCC). In the task of unambiguous discrimination, no error is tolerated but an inconclusive result is allowed. We show that contrary to the quantum case, it is not always possible to distinguish two Fermionic states through LOCC unambiguously with the same success probability as if global measurements were allowed. Furthermore, we prove that we can overcome such a limit through an ancillary system made of two Fermionic modes, independently of the dimension of the system, prepared in a maximally entangled state: in this case, LOCC protocols achieve the optimal success probability.

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