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Publikováno v:
Physical Review Letters 107, 137005 (2011)
We report on graphene-based Josephson junctions with contacts made from lead. The high transition temperature of this superconductor allows us to observe the supercurrent branch at temperatures up to $\sim 2$ K, at which point we can detect a small,
Externí odkaz:
http://arxiv.org/abs/1109.0769
Autor:
Jones, S. J., Wiseman, H. M.
Publikováno v:
Phys. Rev. A 84, 012110 (2011)
A single photon incident on a beam splitter produces an entangled field state, and in principle could be used to violate a Bell-inequality, but such an experiment (without post-selection) is beyond the reach of current experiments. Here we consider t
Externí odkaz:
http://arxiv.org/abs/1102.5369
Publikováno v:
D. J. Saunders, S. J. Jones, H. M. Wiseman and G. J. Pryde, "Experimental EPR-Steering using Bell-local States", in Nature Physics, 6, 845-849 (November 2010)
Entanglement is the defining feature of quantum mechanics, and understanding the phenomenon is essential at the foundational level and for future progress in quantum technology. The concept of steering was introduced in 1935 by Schr\"odinger as a gen
Externí odkaz:
http://arxiv.org/abs/0909.0805
Publikováno v:
Phys. Rev. A 80, 032112 (2009)
We formally link the concept of steering (a concept created by Schrodinger but only recently formalised by Wiseman, Jones and Doherty [Phys. Rev. Lett. 98, 140402 (2007)] and the criteria for demonstrations of Einstein-Podolsky-Rosen (EPR) paradox in
Externí odkaz:
http://arxiv.org/abs/0907.1109
Autor:
Jones, S. J.
Telecommunications capabilities have increased dramatically in recent years. Especially significant is the introduction and tremendous growth of mobile telephone communications. Given the limitations of current mobile phone communications and the nee
Externí odkaz:
http://hdl.handle.net/10919/46338
http://scholar.lib.vt.edu/theses/available/etd-12232009-020026/
http://scholar.lib.vt.edu/theses/available/etd-12232009-020026/
Publikováno v:
Phys. Rev. A 76, 052116 (2007)
In a recent work [Phys. Rev. Lett. {\bf 98}, 140402 (2007)] we defined ``steering'', a type of quantum nonlocality that is logically distinct from both nonseparability and Bell-nonlocality. In the bipartite setting, it hinges on the question of wheth
Externí odkaz:
http://arxiv.org/abs/0709.0390
Publikováno v:
Phys. Rev. Lett. 98, 140402 (2007)
The concept of steering was introduced by Schrodinger in 1935 as a generalization of the EPR paradox for arbitrary pure bipartite entangled states and arbitrary measurements by one party. Until now, it has never been rigorously defined, so it has not
Externí odkaz:
http://arxiv.org/abs/quant-ph/0612147
Publikováno v:
Phys. Rev. A 74, 062313 (2006)
This paper concentrates on a particular example of a constraint imposed by superselection rules (SSRs): that which applies when the parties (Alice and Bob) cannot distinguish among certain quantum objects they have. This arises naturally in the conte
Externí odkaz:
http://arxiv.org/abs/quant-ph/0608056