We propose a method to enhance bipartite and tripartite entanglement in cavity magnomechanics using an optical parametric amplifier (OPA). analyze this system identified regimes where different types of are enhanced. show that proper choice phase the leads enhancement entanglements. Moreover, is also significantly enhanced presence OPA. The OPA not only enhances strength but increases domain ov...

We study the adiabatic density perturbation in the oscillating inflation, proposed by Damour and Mukhanov. The recent study of the cosmological perturbation during reheating shows that the adiabatic fluctuation behaves like as the perfect fluid and no significant amplification occurs on super-horizon scales. In the oscillating inflation, however, the accelerated expansion takes place during the...

We describe a near-IR two-stage noncollinear optical parametric amplifier (NOPA) pumped at 800 nm that employs bulk congruent lithium niobate [LiNbO3 (c-LNB)] and bulk potassium niobate [KNbO3 (KNB)] crystals. Noncollinear phase matching in these materials allows for generation of pulses as broad as 2900 cm−1 (∼78 THz) centered in the near-IR at ∼1300 nm. In the particular geometry described he...

We propose a scheme for continuous-variable quantum cloning of coherent states with phaseconjugate input modes using linear optics. The quantum cloning machine yields M identical optimal clones from N replicas of a coherent state and N its replicas of phase conjugate. This scheme can be straightforwardly implemented with the setup accessible at present since its optical implementation only empl...

Highly efficient quantum dense coding for continuous variables has been experimentally accomplished by means of exploiting bright EPR beam with anticorrelation of amplitude quadratures and correlation of phase quadratures, which is generated from a nondegenerate optical parametric amplifier operating in the state of deamplification. Two bits of classical information are encoded on two quadratur...