64 citations · 414 across the 42 of their papers we have counts for
5 papers · 1 filter
Quantization of constrained systems as Dirac first class versus second class: a toy model and its implications
Eyo Eyo Ita, Chopin Soo, Abraham Tan
A toy model (suggested by Klauder) is analyzed from the perspective of First Class and Second Class Dirac constrained systems. The comparison is made by turning a First Class into…
Exact Abelian and Non-Abelian Geometric Phases
Chopin Soo, Huei-Chen Lin
The existence of Hopf fibrations S^{2N+1}/S^1 = CP^N and S^{4K+3}/S^3 = HP^K allows us to treat the Hilbert space of generic finite-dimensional quantum systems as the total bundle…
Free spin quantum computation with semiconductor nanostructures
Wei-Min Zhang, Yin-Zhong Wu, Chopin Soo
Taking the excess electron spin in a unit cell of semiconductor multiple quantum-dot structure as a qubit, we can implement scalable quantum computation without resorting to spin-s…
Universal quantum computation with electron spins in quantum dots based on superpositions of spacetime paths and Coulomb blockade
Cyrus C. Y. Lin, Chopin Soo, Yin-Zhong Wu +1
Using electrostatic gates to control the electron positions, we present a new controlled-NOT gate based on quantum dots. The qubit states are chosen to be the spin states of an exc…
Wigner rotations, Bell states, and Lorentz invariance of entanglement and von Neumann entropy
Chopin Soo, Cyrus C. Y. Lin
We compute, for massive particles, the explicit Wigner rotations of one-particle states for arbitrary Lorentz transformations; and the explicit Hermitian generators of the infinite…