We present experimental and numerical studies of the dynamics of two delay-coupled device-identical semiconductor lasers. We concentrate on the regime of short delay times where the coupling delay is comparable to the period of the relaxation oscillation frequency. We find characteristic scenarios in the intensity dynamics depending on the spectral detuning and the coupling phase. For small spe...

Color encoded phase-stepping light projection method is a new and promising technique for 3D shape modeling However, the 3D model acquired is often smeared by large error. The main cause of the error is color coupling amongst the three primary colors RGB. In this paper, we first analyzed the color-coupling problem. It is found that there is a strong coupling between G and R element. The couplin...

We demonstrate coherent tunable coupling between a superconducting phase qubit and a lumped-element resonator. The coupling strength is mediated by a flux-biased rf SQUID operated in the nonhysteretic regime. By tuning the applied flux bias to the rf SQUID we change the effective mutual inductance, and thus the coupling energy, between the phase qubit and resonator. We verify the modulation of ...

In electroencephalography (EEG) study, gamma oscillations were reported to participate in pain processing; theta oscillations were also involved in pain processing. Moreover, theta always modulated gamma activity by phase-amplitude coupling in event-related oscillations. Whether theta modulate gamma by phase-amplitude coupling in pain processing is of interest. In the present study, using EEG o...

Based on exact diagonalization and density matrix renormalization group method, we show that an anisotropic triangular lattice Heisenberg spin model has three distinct quantum phases. In particular, a spin-liquid phase is present in the weak interchain coupling regime, which is characterized by an anisotropic spin structure factor with an exponential-decay spin correlator along the weaker coupl...

In the framework of noncompact lattice QED with light fermions, we derive the functional dependence of the average energy per plaquette on the bare parameters using block-spin Renormalization Group arguments and assuming that the renormalized coupling vanishes. Our numerical results for this quantity in 8 4 and 10 4 lattices show evidence for triviality in the weak coupling phase and point to a...

Phase locking in chains of weakly coupled oscillators with coupling beyond nearest neighbors is studied. Starting with a piecewise linear coupling function, a homotopy method is applied to prove the existence of phase locked solutions. Numerical examples are provided to illustrate the existence and the properties of the solutions. Differences between multiple coupling and nearest neighbor coupl...

The successive phase transitions of [Mg(H?0)6][SiF6] were studied by measuring 2 H NMR spectra. The quadrupole coupling constant eQq/h and asymmetry parameter 77 changed drastically at each transition temperature. 1 2 H and 1 F NMR T\ were measured for this compound to study the relation between the molecular motions and the successive phase transitions. The activation energy Ea and the pre-exp...

The anesthetic propofol elicits many different spectral properties on the EEG, including alpha oscillations (8-12 Hz), Slow Wave Oscillations (SWO, 0.1-1.5 Hz), and dose-dependent phase-amplitude coupling (PAC) between alpha and SWO. Propofol is known to increase GABAA inhibition and decrease H-current strength, but how it generates these rhythms and their interactions is still unknown. To inve...