作者:Ananya Paul , Tabish Qureshi
来源:[J].Quanta, 2018, Vol.7 (1), pp.1-6Quanta
摘要:A double-slit experiment with entangled photons is theoretically analyzed. It is shown that, under suitable conditions, two entangled photons of wavelength λ can behave like a biphoton of wavelength λ/2. The interference of these biphotons, passing through a double-slit can ...
作者:Michael Nauenberg
来源:[J].Quanta, 2017, Vol.6 (1), pp.53-56Quanta
摘要:In non-relativistic quantum mechanics, the absolute square of Schrödinger's wave function for a particle in a potential determines the probability of finding it either at a position or momentum at a given time. In classical mechanics the corresponding problem is determined b...
作者:Radu Ionicioiu
来源:[J].Quanta, 2017, Vol.6 (1), pp.57-60Quanta
摘要:Schrödinger's cat is one of the most striking paradoxes of quantum mechanics that reveals the counterintuitive aspects of the microscopic world. Here, I discuss the paradox in the framework of quantum information. Using a quantum networks formalism, I analyse the information...
作者:Mani L. Bhaumik
来源:[J].Quanta, 2017, Vol.6 (1), pp.70-80Quanta
摘要:Erwin Schrödinger is famous for presenting his wave equation of motion that jump-started quantum mechanics. His disenchantment with the Copenhagen interpretation of quantum mechanics led him to unveil the Schrödinger's cat paradox, which did not get much attention for nearly...
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:John J. O'Connor , Edmund F. Robertson
来源:[J].Quanta, 2017, Vol.6 (1), pp.48-52Quanta
摘要:The fathers of matrix quantum mechanics believed that the quantum particles are unanschaulich (unvisualizable) and that quantum particles pop into existence only when we measure them. Challenging the orthodoxy, in 1926 Erwin Schrödinger developed his wave equation that descr...
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:Fedor Herbut
来源:[J].Quanta, 2018, Vol.7 (1), pp.19-39Quanta
摘要:An elaborated review with proofs of Schmidt canonical decomposition of any bipartite state vector is approached through general subsystem basis expansion. The upgraded forms of Schmidt decomposition in terms of correlation operator and twin observables are presented in detai...
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: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...


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