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تسجيل مستخدم جديدMultiple Observers Can Share the Nonlocality of Half of an Entangled Pair by Using Optimal Weak Measurements
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We investigate the trade-off between information gain and disturbance for a class of weak von Neumann measurements on spin-$frac{1}{2}$ particles, and derive the unusual measurement pointer state that saturates this trade-off. We then consider the fundamental question of sharing the non-locality of a single particle of an entangled pair among multiple observers, and demonstrate that by exploiting the information gain disturbance trade-off, one can obtain an arbitrarily long sequence of consecutive and independent violations of the CHSH-Bell inequality.
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