Quanta期刊
期刊
会议
图书
作者:Johannes Fankhauser
来源:[J].Quanta, 2019, Vol.8 (1), pp.44-56Quanta
摘要:I discuss the delayed choice quantum eraser experiment by drawing an analogy to a Bell-type measurement and giving a straightforward account in standard quantum mechanics. The delayed choice quantum eraser experiment turns out to resemble a Bell-type scenario in which the re...
作者:Kamal Bhattacharyya
来源:[J].Quanta, 2019, Vol.8 (1), pp.36-43Quanta
摘要:We highlight overlap as one of the simplest inequalities in linear space that yields a number of useful results. One obtains the Cauchy–Schwarz inequality as a special case. More importantly, a variant of it is seen to work desirably in certain singular situations where the ...
作者:Tabish Qureshi
来源:[J].Quanta, 2019, Vol.8 (1), pp.24-35Quanta
摘要:The interference observed for a quanton, traversing more than one path, is believed to characterize its wave nature. Conventionally, the sharpness of interference has been quantified by its visibility or contrast, as defined in optics. Based on this visibility, wave-particle...
作者:Basil J. Hiley , Maurice A. de Gosson , Glen Dennis
来源:[J].Quanta, 2019, Vol.8 (1), pp.11-23Quanta
摘要:We recall Dirac's early proposals to develop a description of quantum phenomena in terms of a non-commutative algebra in which he suggested a way to construct what he called quantum trajectories . Generalising these ideas, we show how they are related to weak values and expl...
作者:Fedor Herbut
来源:[J].Quanta, 2019, Vol.8 (1), pp.1-10Quanta
摘要:To uncover the hidden complete-lattice structure of Hilbert-space projectors, which is not seen by the operator operations and relations (algebraically), resort is taken to the ranges of projectors (to subspaces—to geometry). Taking the range of a projector is completed into...
作者:Mani L. Bhaumik
来源:[J].Quanta, 2018, Vol.7 (1), pp.111-117Quanta
摘要:The enigmatic nonlocal quantum correlation that was famously derided by Einstein as "spooky action at a distance" has now been experimentally demonstrated to be authentic. The quantum entanglement and nonlocal correlations emerged as inevitable consequences of John Bell's ep...
作者:Maurice A. de Gosson
来源:[J].Quanta, 2018, Vol.7 (1), pp.74-110Quanta
摘要:We will study rigorously the notion of mixed states and their density matrices. We will also discuss the quantum-mechanical consequences of possible variations of Planck's constant h. This review has been written having in mind two readerships: mathematical physicists and qu...
作者:Anthony Sudbery
来源:[J].Quanta, 2018, Vol.7 (1), pp.68-73Quanta
摘要:I outline Bell's vision of the "great enterprise" of science, and his view that conventional teachings about quantum mechanics constituted a betrayal of this enterprise. I describe a proposal of his to put the theory on a more satisfactory footing, and review the subsequent ...
作者:Vinayak Jagadish , Francesco Petruccione
来源:[J].Quanta, 2018, Vol.7 (1), pp.54-67Quanta
摘要:Open quantum systems have become an active area of research, owing to its potential applications in many different fields ranging from computation to biology. Here, we review the formalism of dynamical maps used to represent the time evolution of open quantum systems and dis...
作者:Emily Christine Adlam
来源:[J].Quanta, 2018, Vol.7 (1), pp.40-53Quanta
摘要:It is proposed that certain features of quantum mechanics may be perspectival effects, which arise because experiments performed on locally accessible variables can only uncover a certain subset of the correlations exhibited by an underlying deterministic theory. This hypoth...

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