We propose a linear compression technique for the time interval distribution of photon pairs. Using a partially frequency-entangled two-photon (TP) state with appropriate mean time width, the compressed TP time interval width can be kept in the minimum limit set by the phase modulation, and is independent of its initial width. As a result of this effect, ultra-narrow TP time interval distributi...

In this second part, we will focus on a detailed examination of two critical specifications associated with PLLs: phase noise and reference spurs. What causes them and how can they be minimized? The discussion will include measurement techniques and the effect of these errors on system performance. We will also consider output leakage current, with an example showing its significance in openloo...

Considering the density dependence of quark mass, we investigate the phase transition between the ( unpaired ) strange quark matter and the color-flavor-locked matter, which are supposed to be two candidates for the ground state of strongly interacting matter. We find that if the current mass of strange quarkms is small, the strange quark matter remains stable unless the baryon density is very ...

In this paper, we develop a framework of generalized phase retrieval in which one aims to reconstruct a vector x in R or C through quadratic samples x∗A1x, . . . ,x ∗ANx. The generalized phase retrieval includes as special cases the standard phase retrieval as well as the phase retrieval by orthogonal projections. We first explore the connections among generalized phase retrieval, low-rank matr...

In the following we will desefibe a PC based system which allows motor disabled persons to control devices in a domestic environment. The system will be able to "learn" and reproduce infrared (IR) code from virtually every IR controller currently available, so it can relay on a wide range of commercial devices, now and in the future. The configuration phase will be quite easy, enabling non-expe...

Resonances appearing in hadronic scattering processes are described by a two-phase model. In the one phase, scattering products are observed, whereas the other phase describes confinement. A so-called “Resonance-Spectrum Expansion” is derived, containing expressions that resemble Breit-Wigner formulae. This method also provides a straightforward explanation for the origin of the light scalar me...

Timing jitter in oscillators is a key factor determining the phase noise performance of phase-locked loops. This paper reviews a theory of phase noise in oscillators, and presents timing jitter models suitable for discrete event simulation of these systems.

A model of motion detection is presented. The model contains three stages. The first stage is unoriented and is selective for contrast polarities. The next two stages work in parallel. A phase insensitive stage pools across different contrast polarities through a spatiotemporal filter and thus can detect first and second order motion. A phase sensitive stage keeps contrast polarities separate, ...

A theoretical analysis of a recently proposed phasenoise cancellation technique that relaxes the fundamental tradeoff between phase noise and bandwidth in fractionalphasedlocked loops (PLLs) is presented. The limits imposed by circuit errors and PLL dynamics on the phase noise and loop bandwidth that can be achieved by PLLs incorporating the technique are quantified. Design guidelines are deriv...

We present a brief overview of different methods for simultaneous phase-matching of several parametric optical processes (the so-called multistep cascading) in engineered structures with the modulated second-order nonlinear susceptibility. In particular, we discuss the possibility of double phase-matching in both uniform and non-uniform quasi-phase-matched (QPM) periodic optical superlattices a...