We demonstrate the connection between theoretical expressions for the correlation of ambient noise Rayleigh and Love waves and the exact surface-wave Green’s tensors for a point force. The surface-wave Green’s tensors are well known in the far-field limit. On the other hand, the imaginary part of the exact Green’s tensors, including near-field effects, arises in correlation techniques such as t...

Phase measurements are of paramount importance in quantum optical sensing. However, the promise a advantage, celebrated Heisenberg scaling, is severely curtailed presence noise and loss. Here we investigate systems which phase absorption profiles linked by Kramers–Kronig relations show that, limit large photon number, their use connects uncertainties on attainable optimal probes for loss phase....

2014 ACO synchrotron radiation has been used to obtain photoelectron spectra of the outer shell of xenon in the 75-100 electron volts energy range. Satellite peaks corresponding to the formation of excited ionic states have been observed, in addition to the main peaks corresponding to the production of the 5s2 5p5 2P and 5s 5p6 2S states of Xe+. A comparison is presented of the intensities of t...

We have previously discussed the one dimensional multibarrier potential of finite range and found that under certain values of its total length L and the ratio c of total interval to total width it shows signs of chaos as well as phase transition and a transmission amplitude of unity. We show here that, like the infinite Kronig-Penney system which is arrayed along the whole spatial region it al...

We consider the electron dynamics and transport properties of one-dimensional continuous models with random, short-range correlated impurities. We develop a generalized Poincare map formalism to cast the Schrodinger equation for any potential into a discrete set of equations, illustrating its application by means of a specific example. We then concentrate on the case of a Kronig-Penney model wi...

The electronic structure of graphene-graphane superlattices with armchair interfaces is investigated with first-principles density-functional theory. By separately varying the widths, we find that the energy gap Eg is inversely proportional to the width of the graphene strip and that the gap increases as the hydrogenated strip becomes wider due to the enhanced confinement effect. It is further ...