8 papers
A complex-linear reformulation of Hamilton-Jacobi theory and emergent quantum structure
Yong Zhang
Classical mechanics admits multiple equivalent formulations, from Newton's equations to the variational Lagrange-Hamilton framework and the scalar Hamilton-Jacobi (HJ) theory. In t…
Notes on Bell states and quantum teleportation
Yong Zhang, Wei Zeng, Ming Lian
Bell states and quantum teleportation play important roles in the study of quantum information and computation. But a comprehensive theoretical research on both of them remains to…
Quantum fields from real-time ensemble dynamics
Yong Zhang
Relativistic quantum field theory (QFT) is commonly formulated in terms of operators, asymptotic states, and covariant amplitudes, a perspective that tends to obscure the real-time…
Feeding a Kerr black hole with quantized vortices
Shilong Jin, Xiaofei Zhao, Yong Zhang +1
By solving a nonlinear Klein-Gordon equation in Kerr geometry, we uncover new phenomena and key characteristics of quantized vortices in quantum fluids near a Kerr black hole. The…
Analytic 3D vector non-uniform Fourier crystal optics in arbitrary dielectric
Chenzhu Xie, Yong Zhang
To find a suitable framework for nonlinear crystal optics(NCO), we have revisited linear crystal optics(LCO). At the methodological level, three widely used plane wave bases are co…
Computing the Bogoliubov-de Gennes excitations of two-component Bose-Einstein condensates
Manting Xie, Yong Zhang
In this paper, we present an efficient and spectrally accurate numerical method to compute elementary/collective excitations in two-component Bose-Einstein condensates (BEC), aroun…