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10 papers · 2 filters
Multiple Schrödinger pictures and dynamics in shortcuts to adiabaticity
S. Ibáñez, Xi Chen, E. Torrontegui +2
A Schrödinger equation may be transformed by unitary operators into dynamical equations in different interaction pictures which share with it a common physical frame, i.e., the sam…
Spatial fluctuations in an optical parametric oscillator below threshold with an intracavity photonic crystal
M. A. Garcia-March, M. M. De Castro, R. Zambrini
We show how to control spatial quantum correlations in a multimode degenerate optical parametric oscillator type I below threshold by introducing a spatially inhomogeneous medium,…
Hamilton's turns as visual tool-kit for designing of single-qubit unitary gates
B. Neethi Simon, C. M. Chandrashekar, Sudhavathani Simon
Unitary evolutions of a qubit are traditionally represented geometrically as rotations of the Bloch sphere, but the composition of such evolutions is handled algebraically through…
Alternate two-dimensional quantum walk with a single-qubit coin
C. Di Franco, M. Mc Gettrick, T. Machida +1
We have recently proposed a two-dimensional quantum walk where the requirement of a higher dimensionality of the coin space is substituted with the alternance of the directions in…
Bypassing state initialization in Hamiltonian tomography on spin-chains
C. Di Franco, M. Paternostro, M. S. Kim
We provide an extensive discussion on a scheme for Hamiltonian tomography of a spin-chain model that does not require state initialization [Phys. Rev. Lett. 102, 187203 (2009)]. Th…
Propagation of non-classical correlations across a quantum spin chain
S. Campbell, T. J. G. Apollaro, C. Di Franco +5
We study the transport of quantum correlations across a chain of interacting spin-1/2 particles. As a quantitative figure of merit, we choose a symmetric version of quantum discord…