32 citations · 63 across the 3 of their papers we have counts for
3 papers
quant-ph2008★ 32 cited
Entanglement, Berry Phases, and Level Crossings for the Atomic Breit-Rabi Hamiltonian
Sangchul Oh, Zhen Huang, Uri Peskin +1
The relation between level crossings, entanglement, and Berry phases is investigated for the Breit-Rabi Hamiltonian of hydrogen and sodium atoms, describing a hyperfine interaction…
quant-ph2008★ 18 cited
Quantum phase transitions, entanglement, and geometric phases of two qubits
Sangchul Oh
The relation between quantum phase transitions, entanglement, and geometric phases is investigated with a system of two qubits with XY type interaction. A seam of level crossings o…
quant-ph2007★ 13 cited
Quantum Computational Method of Finding the Ground State Energy and Expectation Values
Sangchul Oh
We propose a new quantum computational way of obtaining a ground-state energy and expectation values of observables of interacting Hamiltonians. It is based on the combination of t…