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Quantum Cryptography: Key Distribution and Beyond
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...
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    Deciphering the Enigma of Wave-Particle Duality
    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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      Holism and Time Symmetry
      作者：Peter J. Lewis
      来源：[J].Quanta, 2016, Vol.5 (1), pp.85-92Quanta
      摘要：Quantum mechanics is often taken to entail holism. I examine the arguments for this claim, and find that although there is no general argument from the structure of quantum mechanics to holism, there are specific arguments for holism available within the three main realist i...
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        Weak Measurement and Two-State-Vector Formalism: Deficit of Momentum Transfer in Scattering Processes
        作者：Chariton Aris Chatzidimitriou-Dreismann
        来源：[J].Quanta, 2016, Vol.5 (1), pp.61-84Quanta
        摘要：The notions of weak measurement, weak value, and two-state-vector formalism provide a new quantum-theoretical frame for extracting additional information from a system in the limit of small disturbances to its state. Here, we provide an application to the case of two-body sc...
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          Accommodating Retrocausality with Free Will
          作者：Yakir Aharonov , Eliahu Cohen , Tomer Shushi
          来源：[J].Quanta, 2016, Vol.5 (1), pp.53-60Quanta
          摘要：Retrocausal models of quantum mechanics add further weight to the conflict between causality and the possible existence of free will. We analyze a simple closed causal loop ensuing from the interaction between two systems with opposing thermodynamic time arrows, such that ea...
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            On the Wavefunction Collapse
            作者：Ovidiu Cristinel Stoica
            来源：[J].Quanta, 2016, Vol.5 (1), pp.19-33Quanta
            摘要：Wavefunction collapse is usually seen as a discontinuous violation of the unitary evolution of a quantum system, caused by the observation. Moreover, the collapse appears to be nonlocal in a sense which seems at odds with general relativity. In this article the possibility t...
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              On the Relation Between Quantum Computational Speedup and Retrocausality
              作者：Giuseppe Castagnoli
              来源：[J].Quanta, 2016, Vol.5 (1), pp.34-52Quanta
              摘要：We investigate the reason for the quantum speedup (quantum algorithms require fewer computation steps than their classical counterparts). We extend the representation of the quantum algorithm to the process of setting the problem, namely choosing the function computed by the...
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                Towards a Realistic Parsing of the Feynman Path Integral
                作者：Ken Wharton
                来源：[J].Quanta, 2016, Vol.5 (1), pp.1-11Quanta
                摘要：The Feynman path integral does not allow a one real path interpretation, because the quantum amplitudes contribute to probabilities in a non-separable manner. The opposite extreme, all paths happen , is not a useful or informative account. In this paper it is shown that an i...
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                  Antimatter in the Direct-Action Theory of Fields
                  作者：Ruth E. Kastner
                  来源：[J].Quanta, 2016, Vol.5 (1), pp.12-18Quanta
                  摘要：One of Feynman's greatest contributions to physics was the interpretation of negative energies as antimatter in quantum field theory. A key component of this interpretation is the Feynman propagator, which seeks to describe the behavior of antimatter at the virtual particle ...
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                    Was Albert Einstein Wrong on Quantum Physics?
                    作者：Mani L. Bhaumik
                    来源：[J].Quanta, 2015, Vol.4 (1), pp.35-42Quanta
                    摘要：Albert Einstein is considered by many physicists as the father of quantum physics in some sense. Yet there is an unshakable view that he was wrong on quantum physics. Although it may be a subject of considerable debate, the core of his allegedly wrong demurral was the insist...
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