From the 1 of 10 linked papers with an AI index.
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Information geometric quantification of effective privacy in quantum metrology
Luca Bianchi, Shimpei Yamaguchi, Wojciech Roga +2
The paper introduces an information‑geometric framework to quantify privacy and accessibility in quantum metrology by measuring volumes in the parameter space, and applies it to ex…
Private quantum network sensing with efficient multi-partite entanglement distribution via lossy channels
Yoshihiro Ueda, Makoto Ishihara, Wojciech Roga +1
Quantum network sensing shows potential to enhance the estimation precision for functions of spatially distributed parameters beyond the shot noise limit. The key resource required…
Multipartite device-independent quantum key distribution using W states
Makoto Ishihara, Wojciech Roga, Masahiro Takeoka
Multipartite device-independent quantum key distribution (DI-QKD), also known as device-independent conference key agreement, enables more than two remote parties to share a common…
Demonstration of sequential processors with quantum advantage and analysis of classical performance limits
Shota Tateishi, Wenhao Wang, Baptiste Chevalier +3
In this paper, we theoretically and experimentally analyze sequential processors with limited communication between parts. We compare the expressivity of sequential quantum and cla…
Fault-tolerant modular quantum computing with surface codes using single-shot emission-based hardware
Siddhant Singh, Rikiya Kashiwagi, Kazufumi Tanji +4
Fault-tolerant modular quantum computing requires stabilizer measurements across the modules in a quantum network. For this, entangled states of high quality and rate must be distr…
Geometric measures of quantum nonlocality: characterization, quantification, and comparison by distances and operations
Gennaro Zanfardino, Wojciech Roga, Gianluigi Tartaglione +2
We introduce a geometric framework for studying Bell nonlocality in Hilbert space, where, for a given quantum state, nonlocality is quantified by the distance between the state and…