A nonreciprocal magnon laser is proposed in a compound cavity optomagnonical system consisting of an yttrium iron garnet sphere coupled to spinning resonator. On the basis magnon-induced Brillouin scattering process making it possible achieve lasing action, Fizeau light-dragging effect caused by resonator further results significant modifications gain and threshold power for different driving directions, then realized. Especially, this highly tunable speed direction. Our work provides...

We investigate magnon statistics in a qubit-magnon hybrid quantum system which an effective appreciable coupling can be realized by exchanging virtual cavity photons. A conventional blockade and two types of unconventional blockades are proposed, respectively, based on three different physical mechanisms. verify theoretically that occur strong, weak, moderate regimes. It is interesting asymmetry structure for anti-bunching observed the case strength, especially where interference...

In this paper, we introduce the Hermite polynomial's coherent state (HPCS) |α〉H, which is defined as Hn(X)|α〉 up to a normalization constant and where Hn(X) coordinate operator's polynomial of order nand |α〉=exp(−(1/2)|α|2+αa†)|0〉. This may be produced by superposition some different photon added states when n=2. The mathematical physical properties HPCS are also studied. It shown that has remarkable nonclassical features such sub-Poissonian squeezing properties.

We study phase-controlled quantum entanglement and one-way steering in a cavity magnonic system, where two magnon modes couple to microwave cavities driven by squeezed fields. The magnon-magnon the directivity can be controlled adjusting ratio of coupling strengths between modes. In particular, significantly enhanced vacuum field, which also exhibits robustness against temperature variations. More intriguingly, both are susceptible variations phase difference Josephson parametric amplifiers,...

We put forward a proposal to prepare tripartite interplay in cavity optomechanical system with two-level atom. study the dynamical properties of atomic linear entropy and find that entanglement between atom subsystem field mechanical resonator can be effectively manipulated by coherence. The Mandel parameter is employed reveal sub-Poissonian statistics optical modes. Moreover, we discuss influence dissipations, including atomic, modes, on temporal evolution parameters.

By virtue of the completeness Wigner operator and Weyl correspondence we construct a general equation for deriving pure state density operators. Several important examples are considered as applications this equation, which shows that our approach is effective convenient deducing these entangled representations.

In the context of quantum mechanics classical wavelet transform a function f with mother can be recast into matrix element squeezing-displacing operator U(,s) as 〈|U(,s) |f〉. The technique integral within an ordered product operators is used to support this theory. Based on this, transforms are done for even- and odd-binomial states, corresponding numerical calculation leads spectrum transform, which helpful recognizing difference between odd-states.

In this work, we theoretically construct an orthogonal state of a coherent where the orthogonalizer is based on Hermite polynomial excited operation with Hm(x) being order m and creation operator , called Hermite-excite-orthogonalized (HEOCS). Then, in comparison (HPECS), numerically investigate their different nonclassical properties by examining several measurable features, such as photon number distribution, sub-Poisson statistics, antibunching effect, quadrature squeezing negative Wigner...

We introduce the generalized fermionic Wigner operator with an s parameter. Based on its remarkable properties, we establish one-to-one mapping between fermion operators and their s-parametrized pseudo-classical correspondence, which may involve Weyl P-representation Q-representation in a unified way. Furthermore, starting projector of coherent state, obtain s-ordered expansion formula density operators, includes normally ordered, antinormally ordered product for different values s....

A scheme is proposed to investigate the non-classical states generated by a quantum scissors device (QSD) operating on cavity mode of an optomechanical system. When catalytic QSD acts system, resulting state contains only vacuum, single-photon and two-photon depending upon coupling parameter system as well transmission coefficients beam splitters (BSs). Especially, output just class multicomponent cat truncations at time t = 2 π choosing appropriate value parameter. We discuss success...