MiS Preprint Repository

We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV ( that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.

MiS Preprint

One-way deficit of SU(2) invariant states

Yao-Kun Wang, Teng Ma, Shao-Ming Fei and Zhi-Xi Wang


We calculate analytically the one-way deficit for systems consisting spin-$j$ and spin-$\frac{1}{2}$ subsystems with $SU(2)$ symmetry. Comparing our results with the quantum discord of $SU(2)$ invariant states, we show that the one-way deficit is equal to the quantum discord for half-integer $j$, and is larger than the quantum discord for integer $j$. Moreover, we also compare the one-way deficit with entanglement of formation. The quantum entanglement tends to zero as $j$ increases, while the one-way deficit can remain significantly large.


Related publications

2014 Repository Open Access
Yao-Kun Wang, Teng Ma, Shao-Ming Fei and Zhi-Xi Wang

One-way deficit of SU (2) invariant states

In: Reports on mathematical physics, 73 (2014) 2, pp. 165-175