Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Cavalcanti, E. G."'
Autor:
Pearl, J. C., Cavalcanti, E. G.
Publikováno v:
Quantum 5, 518 (2021)
In a recent work, it was shown by one of us (EGC) that Bell-Kochen-Specker inequality violations in phenomena satisfying the no-disturbance condition (a generalisation of the no-signalling condition) cannot in general be explained with a faithful cla
Externí odkaz:
http://arxiv.org/abs/1909.05434
Publikováno v:
Phys. Rev. E 101, 060101 (2020)
The standard formulation of thermostatistics, being based on the Boltzmann-Gibbs distribution and logarithmic Shannon entropy, describes idealized uncorrelated systems with extensive energies and short-range interactions. In this letter, we use the f
Externí odkaz:
http://arxiv.org/abs/1907.01855
Autor:
Olsen, M. K., Cavalcanti, E. G.
The fully symmetric Gaussian tripartite entangled pure states will not exhibit two-mode Einstein Podolsky-Rosen (EPR)-steering. This means that any two participants cannot share quantum secrets using the security of one-sided device independent quant
Externí odkaz:
http://arxiv.org/abs/1510.01821
Autor:
Bennet, A. J., Evans, D. A., Saunders, D. J., Branciard, C., Cavalcanti, E. G., Wiseman, H. M., Pryde, G. J.
Publikováno v:
Physical Review X 2, 031003 (2012)
Demonstrating nonclassical effects over longer and longer distances is essential for both quantum technology and fundamental science. The main challenge is loss of photons during propagation, because considering only those cases where photons are det
Externí odkaz:
http://arxiv.org/abs/1111.0739
Publikováno v:
Phys. Rev. A 84, 032115 (2011)
Wiseman and co-workers (Phys. Rev. Lett. 98, 140402, 2007) proposed a distinction between the nonlocality classes of Bell's nonlocality, steering and entanglement based on whether or not an overseer trusts each party in a bipartite scenario where the
Externí odkaz:
http://arxiv.org/abs/1008.5014
Publikováno v:
Phys. Rev. A 81, 062106 (2010)
Tests of local hidden variable theories using measurements with continuous variable (CV) outcomes are developed, and a comparison of different methods is presented. As examples, we focus on multipartite entangled GHZ and cluster states. We suggest a
Externí odkaz:
http://arxiv.org/abs/1005.2208
Publikováno v:
Phys. Rev. Lett. 103, 180402 (2009)
We show that arbitrary functions of continuous variables, e.g. position and momentum, can be used to generate tests that distinguish quantum theory from local hidden variable theories. By optimising these functions, we obtain more robust violations o
Externí odkaz:
http://arxiv.org/abs/0911.2532
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
Publikováno v:
Phys. Rev. A 78, 060104(R) (2008)
We propose three criteria for identifying continuous variable entanglement between two many-particle systems with no restrictions on the quantum state of the local oscillators used in the measurements. Mistakenly asserting a coherent state for the lo
Externí odkaz:
http://arxiv.org/abs/0806.3120
Autor:
Cavalcanti, E. G., Reid, M. D.
Publikováno v:
Phys. Rev. A 77, 062108 (2008)
We consider macroscopic, mesoscopic and "S-scopic" quantum superpositions of eigenstates of an observable, and develop some signatures for their existence. We define the extent, or size $S$ of a superposition, with respect to an observable \hat{x}, a
Externí odkaz:
http://arxiv.org/abs/0806.0457