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Mixed state sensitivity of several quantum information benchmarks
Nicholas A. Peters, Tzu-Chieh Wei, Paul G. Kwiat
We investigate an imbalance between the sensitivity of the common state measures--fidelity, trace distance, concurrence, tangle, von Neumann entropy and linear entropy--when acted…
Global entanglement and quantum criticality in spin chains
Tzu-Chieh Wei, Dyutiman Das, Swagatam Mukhopadyay +2
Entanglement in quantum XY spin chains of arbitrary length is investigated via a recently-developed global measure suitable for generic quantum many-body systems. The entanglement…
Connections between relative entropy of entanglement and geometric measure of entanglement
Tzu-Chieh Wei, Marie Ericsson, Paul M. Goldbart +1
As two of the most important entanglement measures--the entanglement of formation and the entanglement of distillation--have so far been limited to bipartite settings, the study of…