Helstrom Theorem by No-Signaling Condition

Abstract

We prove a special case of Helstrom theorem by using no-signaling condition in the special theory of relativity that faster-than-light communication is impossible.

Minor corrections (A reference added, discussion part deleted, typos in equations corrected), 2 pages, RevTex

References in corpus (4)

• Quantum State Discrimination
• Quantum cloning without signaling
• Quantum deleting and Signalling
• Quantum Gambling Using Two Nonorthogonal States

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• Local preservation of no-signaling in multiparty PT-symmetric evolutions
• Using the no-signaling condition for constraining the nonidealness of a Stern-Gerlach setup
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• How to Device-Independently Generate States for Which Unambiguous State Discrimination is Impossible
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• A testable prediction of the no-signalling condition using a variant of the EPR-Bohm example
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