Author Archives: administrator

Mixture of entangled pure states with maximally mixed one-qudit reduced density matrices (M.M. Flores and E.A. Galapon, arXiv:1512.05539)

By | December 18, 2015

Abstract We study the conditions when mixtures of entangled pure states with maximally mixed one-qudit reduced density matrices remain entangled. We found that the resulting mixed state remains entangled when the number of entangled pure states to be mixed is less than or equal to the dimension of the pure states. For the latter case… Read More »

Synchronizing quantum and classical clocks made of quantum particles (arXiv:1512.05034 P.C.M. Flores, E.A. Galapon, R.C.F. Caballar)

By | December 17, 2015

We demonstrate that the quantum corrections to the classical arrival time for a quantum object in a potential free region of space, as computed by Galapon [Phys. Rev. A {\bf 80}, 030102(R) (2009)], can be eliminated up to a given order of ℏ by choosing an appropriate position-dependent phase for the object’s wavefunction. This then… Read More »

Particle detection and non-detection in a quantum time of arrival measurement (D. Sombillo and E.A. Galapon, Annals of Physics, 364, 261–273 (2016))

By | November 30, 2015

Abstract The standard time-of-arrival distribution cannot reproduce both the temporal and the spatial profile of the modulus squared of the time-evolved wave function for an arbitrary initial state. In particular, the time-of-arrival distribution gives a non-vanishing probability even if the wave function is zero at a given point for all values of time. This poses… Read More »