4 papers · 1 filter
Quantum capacity amplification via privacy
Peixue Wu, Yunkai Wang
We investigate superadditivity of quantum capacity through private channels whose Choi-Jamiolkowski operators are private states. This perspective links the security structure of p…
Reverse-type Data Processing Inequality
Paula Belzig, Li Gao, Graeme Smith +1
The quantum data processing inequality asserts that two quantum states become harder to distinguish when a noisy channel is applied. On the other hand, a reverse quantum data proce…
Lower bound for simulation cost of open quantum systems: Lipschitz continuity approach
Zhiyan Ding, Marius Junge, Philipp Schleich +1
Simulating quantum dynamics is one of the most promising applications of quantum computers. While the upper bound of the simulation cost has been extensively studied through variou…
Quantum Secret Sharing and Tripartite Information
Marius Junge, Chloe Kim, Guangkuo Liu +1
We develop a connection between tripartite information , secret sharing protocols and multi-unitaries. This leads to explicit ((2,3)) threshold schemes in arbitrary dimension…