110 citations · 251 across the 6 of their papers we have counts for
6 papers
Demonstration of nonstoquastic Hamiltonian in coupled superconducting flux qubits
I. Ozfidan, C. Deng, A. Y. Smirnov +45
Quantum annealing (QA) is a heuristic algorithm for finding low-energy configurations of a system, with applications in optimization, machine learning, and quantum simulation. Up t…
Equation-of-motion treatment of hyperfine interaction in a quantum dot
Changxue Deng, Xuedong Hu
Isolated electron spins in semiconductor nanostructures are promising qubit candidates for a solid state quantum computer, There have seen truly impressive experimental progresses…
Analytical Solution of Electron Spin Decoherence Through Hyperfine Interaction in a Quantum Dot
Changxue Deng, Xuedong Hu
We analytically solve the {\it Non-Markovian} single electron spin dynamics due to hyperfine interaction with surrounding nuclei in a quantum dot. We use the equation-of-motion met…
Decoherence of Nuclear Spin Quantum Memory in Quantum Dot
Changxue Deng, Xuedong Hu
Recently an ensemble of nuclear spins in a quantum dot have been proposed as a long-lived quantum memory. A quantum state of an electron spin in the dot can be faithfully transfere…
Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot
Changxue Deng, Xuedong Hu
We study the mechanism of dynamical nuclear spin polarization by hyperfine interaction in spin-blocked double quantum dot system. We calculate the hyperfine transition rates and so…
Nuclear spin diffusion in semiconductor nanostructures: Effects of inhomogeneous hyperfine interactions
Changxue Deng, Xuedong Hu
We study the effect of contact hyperfine interaction on the nuclear spin diffusion coefficients in semiconductor quantum dots. The diffusion coefficients are calculated with both t…