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:Ammar Daskin
来源:[J].Quanta, 2018, Vol.7 (1), pp.7-18Quanta
摘要:The learning process for multilayered neural networks with many nodes makes heavy demands on computational resources. In some neural network models, the learning formulas, such as the Widrow–Hoff formula, do not change the eigenvectors of the weight matrix while flatting the...
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: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:Tabish Qureshi , Ushba Rizwan
来源:[J].Quanta, 2017, Vol.6 (1), pp.61-69Quanta
摘要:The Hanbury Brown–Twiss (HBT) effect, at the quantum level, is essentially an interference of one particle with another, as opposed to interference of a particle with itself. Conventional treatments of identical particles encounter difficulties while dealing with entanglemen...
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: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: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:Akshata Shenoy-Hejamadi , Anirban Pathak , Srikanth Radhakrishna
来源:[J].Quanta, 2017, Vol.6 (1), pp.1-47Quanta
摘要:Uniquely among the sciences, quantum cryptography has driven both foundational research as well as practical real-life applications. We review the progress of quantum cryptography in the last decade, covering quantum key distribution and other applications. Quanta 2017; 6: 1...
作者:Mani L. Bhaumik
来源:[J].Quanta, 2016, Vol.5 (1), pp.93-100Quanta
摘要:A satisfactory explanation of the confounding wave-particle duality of matter is presented in terms of the reality of the wave nature of a particle. In this view, a quantum particle is an objectively real wave packet consisting of irregular disturbances of underlying quantum...


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