48 citations · 133 across the 5 of their papers we have counts for
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quant-ph2006★ 48 cited
Entanglement between qubits induced by a common environment with a gap
Sangchul Oh, Jaewan Kim
We study a system of two qubits interacting with a common environment, described by a two-spin boson model. We demonstrate two competing roles of the environment: inducing entangle…
quant-ph2006★ 22 cited
Entanglement of an impurity and conduction spins in the Kondo model
Sangchul Oh, Jaewan Kim
Based on Yosida's ground state of the single-impurity Kondo Hamiltonian, we study three kinds of entanglement between an impurity and conduction electron spins. First, it is shown…