K-quantum Nonlinear Jaynes-Cummings Model in Two Trapped Ions

A k-quantum nonlinear Jaynes-Cummings model for two trapped ions interacting with laser beams resonant to k-th red side-band of center-of-mass mode, far from Lamb-Dicke regime, has been obtained. The exact analytic solution showed the existence of quantum collapses and revivals of the occupation of two atoms.Comment: 8 pages, 3 figure

Depth Assisted Full Resolution Network for Single Image-based View Synthesis

Researches in novel viewpoint synthesis majorly focus on interpolation from multi-view input images. In this paper, we focus on a more challenging and ill-posed problem that is to synthesize novel viewpoints from one single input image. To achieve this goal, we propose a novel deep learning-based technique. We design a full resolution network that extracts local image features with the same resolution of the input, which contributes to derive high resolution and prevent blurry artifacts in the final synthesized images. We also involve a pre-trained depth estimation network into our system, and thus 3D information is able to be utilized to infer the flow field between the input and the target image. Since the depth network is trained by depth order information between arbitrary pairs of points in the scene, global image features are also involved into our system. Finally, a synthesis layer is used to not only warp the observed pixels to the desired positions but also hallucinate the missing pixels with recorded pixels. Experiments show that our technique performs well on images of various scenes, and outperforms the state-of-the-art techniques

Quantum-State Engineering of Multiple Trapped Ions for Center-of-Mass Mode

We propose a scheme to generate a superposition with arbitrary coefficients on a line in phase space for the center-of-mass vibrational mode of N ions by means of isolating all other spectator vibrational modes from the center-of-mass mode. It can be viewed as the generation of previous methods for preparing motional states of one ion. For large number of ions, we need only one cyclic operatin to generate such a superposition of many coherent states.Comment: 14 pages, revte

The Impact of Environmental Information Disclosure on Business Performance: Evidence from High-Polluting Industries in China

Environmental management is a major goal for many Chinese companies as sustainability has become a critical issue not only for one company but, for the whole society. The paper studies the relationship between environmental information disclosure and business performance by investigating the publicly available environmental information disclosure in China. We use data of annual financial statements, sustainability disclosure reports, environment reports, and social responsibility reports of high-polluting companies listed at Shanghai Stock Exchange. Our investigation leads towards following two findings: (1) Environmental information disclosure has a positive impact on business performance; and (2) the positive impact is more significant for state-owned enterprises as compared to non-state-owned enterprises. Keywords: Environmental information disclosure; Business performance; High-polluting industries; Chin

Marketization Level，Debt Maturity and Expense Stickiness of Chinese Listed Companies: Analysis Based on Fixed Effect Model

Expense stickiness is the phenomenon that the marginal rate of change of expense is different when the volume changes in different directions. It can be regarded as a form of agency cost. Both the debt financing and the external environment of the companies are important corporate governance mechanism and can play a role of inhibition on agency cost. With the data of listed companies from Shanghai Stock Exchange(SSE) and Shenzhen Stock Exchange(SZSE) in China, this paper finds that expense stickiness exists in the listed companies in China. We also observe that the shorter listed companies’ debt maturity can inhibit the cost stickiness. At last, this paper shows that the lower marketization level of the place the listed companies are located in, the stronger the debt maturity’s inhibiting effect on expense stickiness is. This result also suggests the substitution between the debt maturity and the marketization level. Strengthening cost management and rationalizing the maturity of debt are two important issues of Chinese companies. Hence, putting cost stickiness and debt maturity into a research framework has a significant guiding meaning. Keywords: Marketization level；Debt maturity；Expense stickiness；Fixed effect model