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quant-ph2012★ 25 cited
Computing complexity measures for quantum states based on exponential families
Sönke Niekamp, Tobias Galla, Matthias Kleinmann +1
Given a multiparticle quantum state, one may ask whether it can be represented as a thermal state of some Hamiltonian with k-particle interactions only. The distance from the expon…
quant-ph2012★ 51 cited
Estimating entanglement monotones with a generalization of the Wootters formula
Zhi-Hua Chen, Zhi-Hao Ma, Otfried Gühne +1
Entanglement monotones, such as the concurrence, are useful tools to characterize quantum correlations in various physical systems. The computation of the concurrence involves, how…