模拟GHZ相关性放松物理约束
Simulating GHZ Correlations Relaxing Physical Constraints
摘要：
非局部相关对贝尔不等式（或贝尔型不等式）的违反是合理的，因为放松了至少一个用于模拟这种不等式的合理物理约束。基于这一事实，在这封信中，我们提出了一个程序来模拟三量子比特GHZ关联放松两个约束，确定性和无信号同时。我们还推导出了在系统中引入的最小量的不确定性和信号。还提供了通信所需的信令和本地互信息位的相应数量，因此我们能够专注于放松这两个约束作为有用资源的效用。
英文摘要：
Violation of Bell inequality (or, Bell-type inequalities) by nonlocal correlations is justified by relaxation of at least one of the plausible physical constraints used to model such inequality. Based on this fact, in this letter we present a procedure to simulate three-qubit GHZ correlation relaxing two constraints, determinism and no signaling simultaneously. We have also derived the minimum amount of indeterminism and signaling to be introduced in a system. The corresponding number of signaling and local bits of mutual information needed to communicate are also provided and thus we are able to focus on utility of relaxation of these two constraints as useful resources.
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