ph Changes Over Two Centuries in Three Dutch Moorland Pools

Dam, Herman van; Geel, B. van; Wijk, A. Van Der; Dickman, Mike

doi:10.1007/978-94-009-4003-1_128

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2005

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“…[6]. This hypothetical machine was constructed to violate the Clauser-Horne-Shimony-Holt (CHSH) inequality [7] B ≤ 2 up to its algebraic bound of B = 4 (while it is known that QM reaches up only to B = 2 √ 2) without violating the no-signaling constraint; and it would also provide a very powerful primitive for informationtheoretical tasks [8,9]. Cerf, Gisin, Massar and Popescu [10] have shown that the singlet can be simulated by local variables plus just a single use of the NLM per pair: this is the analog of the Toner-Bacon result for communication.…”

Section: Introductionmentioning

confidence: 99%

Entanglement and non-locality are different resources

2005

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Bell's theorem states that, to simulate the correlations created by measurement on pure entangled quantum states, shared randomness is not enough: some "non-local" resources are required. It has been demonstrated recently that all projective measurements on the maximally entangled state of two qubits can be simulated with a single use of a "non-local machine". We prove that a strictly larger amount of this non-local resource is required for the simulation of pure non-maximally entangled states of two qubits |ψ(α) = cos α|00 + sin α|11 with 0 < α < ∼ π 7.8 .

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Section: Introductionmentioning

confidence: 99%