288 citations · 1.7k across the 40 of their papers we have counts for
Showing 2013Show all
3 papers · 1 filter
quant-ph2013★ 138 cited
Quantum discord for two-qubit X states: Analytical formula with very small worst-case error
Yichen Huang
Quantum discord is a measure of quantum correlation beyond entanglement. Computing quantum discord for simple quantum states is a basic problem. An analytical formula of quantum di…
quant-ph2013★ 64 cited
Scaling of quantum discord in spin models
Yichen Huang
We study the scaling of quantum discord (a measure of quantum correlation beyond entanglement) in spin models analytically and systematically. We find that at finite temperature th…
quant-ph2013★ 288 cited
Computing quantum discord is NP-complete
Yichen Huang
We study the computational complexity of quantum discord (a measure of quantum correlation beyond entanglement), and prove that computing quantum discord is NP-complete. Therefore,…