Results 31 to 40 of about 5,471 (136)
Coherent feedback that beats all measurement-based feedback protocols
New Journal of Physics, 2014 We show that when the speed of control is bounded, there is a widely applicable minimal-time control problem for which a coherent feedback protocol is optimal, and is faster than all measurement-based feedback protocols, where the latter are defined in a
Kurt Jacobs +2 more
doaj +1 more source
Towards symmetric scheme for superdense coding between multiparties [PDF]
, 2002 Recently Liu, Long, Tong and Li [Phys. Rev. A 65, 022304 (2002)] have proposed a scheme for superdense coding between multiparties. This scheme seems to be highly asymmetric in the sense that only one sender effectively exploits entanglement.
Andrzej Grudka +5 more
core +4 more sources
Propagation and survival of frequency‐bin entangled photons in metallic nanostructures
Nanophotonics, Volume 4, Issue 3, Page 324-331, October 2015., 2015 Abstract We report on the design of two plasmonic nanostructures and the propagation of frequency‐bin entangled photons through them. The experimental findings clearly show the robustness of frequency‐bin entanglement, which survives after interactions with both a hybrid plasmo‐photonic structure, and a nano‐pillar array.
Laurent Olislager +7 more
wiley +1 more source
Optimal quantum states for frequency estimation
New Journal of Physics, 2014 We investigate different quantum parameter estimation scenarios in the presence of noise, and identify optimal probe states. For frequency estimation of local Hamiltonians with dephasing noise, we determine optimal probe states for up to 70 qubits, and ...
F Fröwis +3 more
doaj +1 more source
Modification of One‐Dimensional TiO2 Nanotubes with CaO Dopants for High CO2 Adsorption
International Journal of Photoenergy, Volume 2014, Issue 1, 2014., 2014 One‐dimensional calcium oxide (CaO‐) based titanium dioxide (TiO2) nanotubes were successfully synthesized through a rapid electrochemical anodization and chemical wet impregnation techniques. In this study, calcium nitrate solution was used as a calcium source precursor.
Chin Wei Lai, Tian-Yi Ma
wiley +1 more source
Maximally entangled mixed states of two atoms trapped inside an optical cavity
, 2008 In some off-resonant cases, the reduced density matrix of two atoms symmetrically coupled with an optical cavity can very approximately approach to maximally entangled mixed states or maximal Bell violation mixed states in their evolution.
Bell J S +5 more
core +1 more source
Solid-State Quantum Computer Based on Scanning Tunneling Microscopy [PDF]
, 2001 We propose a solid-state nuclear spin quantum computer based on application of scanning tunneling microscopy (STM) and well-developed silicon technology.
A. Barenco +10 more
core +2 more sources
The Scientific World Journal, Volume 2012, Issue 1, 2012., 2012 This study describes the chemical speciation of Pb, Zn, Cu, Cr, As, and Sn in soil of former tin mining catchment. Total five sites were selected for sampling and subsequent subsamples were collected from each site in order to create a composite sample for analysis.
M. A. Ashraf +3 more
wiley +1 more source
Imprecise probability for non-commuting observables
New Journal of Physics, 2015 It is known that non-commuting observables in quantum mechanics do not have joint probability. This statement refers to the precise (additive) probability model.
Armen E Allahverdyan
doaj +1 more source
Geometric observation for the Bures fidelity between two states of a qubit [PDF]
, 2001 In this Brief Report, we present a geometric observation for the Bures fidelity between two states of a qubit.Comment: 4 pages, 1 figure, RevTex, Accepted by Phys. Rev.
A. A. Ungar +26 more
core +2 more sources