论文标题

量子非局部性的真实激活:比本地不可区分强

Genuine Activation of Quantum Nonlocality: Stronger Than Local Indistinguishability

论文作者

Gupta, Tathagata, Ghosh, Subhendu B., A V, Ardra, Bhowmik, Anandamay Das, Saha, Sutapa, Guha, Tamal, Rahaman, Ramij, Mukherjee, Amit

论文摘要

量子理论的结构确保歧视任何可能的正交状态。然而,在有限的测量环境中,这种情况变得高度不利,并导致不同类别的不可能,即没有可区分的性,难以释放的能力,不可还能等。这些现象通常被称为量子理论的其他非定位方面,在秘密共享的领域中具有巨大的重要性,从而使这些行为变得如此庞大,因此在这些问题中变得越来越重要。功能,没有本地冗余。虽然最近报道了在纠缠状态的集合中的局部不可分割性的激活,但在激活的说法中尚未检查其他更强的量子非量化概念。在这里,我们探索了所有更强大的非局部性版本,并肯定地回答了它们每个版本。我们还发现了一组可分辨的多部分纠缠状态集,可以确定地转换为一组非平凡的本地不可约的真实纠缠状态。

The structure of quantum theory assures the discrimination of any possible orthogonal set of states. However, the scenario becomes highly nontrivial in the limited measurement setting and leads to different classes of impossibility, viz., indistinguishability, unmarkability, irreducibility etc. These phenomena, often referred to as other nonlocal aspects of quantum theory, have utmost importance in the domain of secret sharing etc. It, therefore, becomes a pertinent question to distill/activate such behaviours from a set, apparently devoid of these nonlocal features and free from local redundancy. While the activation of local indisitinguishability in the sets of entangled states has recently been reported, other stronger notion of quantum nonlocality has yet not been inspected in the parlance of activation. Here, we explored all such stronger versions of nonlocality and affirmatively answered to activate each of them. We also find a locally distinguishable set of multipartite entangled states which can be converted with certainty to a nontrivial set of locally irreducible genuinely entangled states.

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