Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Vaccaro, J. A."'
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
Information is central to thermodynamics, providing the grounds to the formulation of the theory in powerful abstract statistical terms. One must not forget, however, that, as put by Landauer, {\it information is physical}. This means that the proces
Externí odkaz:
http://arxiv.org/abs/1803.08619
Akademický článek
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Autor:
Vaccaro, J. A.
Publikováno v:
Proceedings of the 8th International Conference on Quantum Communication, Measurement and Computing, 28th November-3rd December 2006 Tsukuba Japan, Edited by O. Hirota, J.H. Shapiro, M. Sasaki (NICT, Tokyo, 2006)
We generalize Bohr's complementarity principle for wave and particle properties to arbitrary quantum systems. We begin by noting that a particle-like state is represented by a spatially-localized wave function and its narrow probability density is di
Externí odkaz:
http://arxiv.org/abs/1012.3532
Under the operational restriction of the U(1)-superselection rule, states that contain coherences between eigenstates of particle number constitute a resource. Such resources can be used to facilitate operations upon systems that otherwise cannot be
Externí odkaz:
http://arxiv.org/abs/0811.3660
Publikováno v:
Phys. Rev. A 79, 032109 (2009)
Global conservation laws imply superselection rules (SSR) which restrict the operations that are possible on any given state. Imposing the additional constraint of local operations and classical communication (LOCC) forbids the transfer of quantum sy
Externí odkaz:
http://arxiv.org/abs/0807.0064
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
Publikováno v:
Phys. Rev. A 75, 012333 (2007)
We describe quantum protocols for voting and surveying. A key feature of our schemes is the use of entangled states to ensure that the votes are anonymous and to allow the votes to be tallied. The entanglement is distributed over separated sites; the
Externí odkaz:
http://arxiv.org/abs/quant-ph/0504161
Publikováno v:
Phys. Rev. A 77, 032114 (2008)
Superselection rules (SSRs) limit the mechanical and quantum processing resources represented by quantum states. However SSRs can be violated using reference systems to break the underlying symmetry. We show that there is a duality between the abilit
Externí odkaz:
http://arxiv.org/abs/quant-ph/0501121
Autor:
Mitsumori, Y., Vaccaro, J. A., Barnett, S. M., Andersson, E., Hasegawa, A., Takeoka, M., Sasaki, M.
Publikováno v:
Phys. Rev. Lett. 91, 217902 (2003).
We report an experimental demonstration of Schumacher's quantum noiseless coding theorem. Our experiment employs a sequence of single photons each of which represents three qubits. We initially prepare each photon in one of a set of 8 non-orthogonal
Externí odkaz:
http://arxiv.org/abs/quant-ph/0304036