67 citations · 164 across the 13 of their papers we have counts for
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quant-ph2013★ 10 cited
Evidence that All States Are Unitarily Equivalent to X States of the Same Entanglement
Samuel R. Hedemann
Strong numerical evidence is presented suggesting that all two-qubit mixed states are equivalent to X states by a single entanglement-preserving unitary (EPU) transformation, so th…
quant-ph2013★ 44 cited
Restoration of Quantum State in Dephasing Channel
Xinyu Zhao, Samuel R. Hedemann, Ting Yu
In this paper, we propose an explicit scheme to fully recover a multiple-qubit state subject to a phase damping noise. We establish the theoretical framework and the operational pr…
quant-ph2013★ 4 cited
Hyperspherical Parameterization of Unitary Matrices
S. R. Hedemann
Unitary operators are essential to quantum mechanics, however for discrete systems larger than a qubit, it is difficult to express them in a self-contained way. This report present…