arXiv subjects

Shogo Chiwaki

Publications and source records attributed to Shogo Chiwaki.

2 recordsLinked to original sources

arXiv2025

Measurement-free reconstruction circuit of quantum secrets in quantum secret sharing

For a quantum secret sharing scheme built from a general quantum stabilizer code, no measurement-free circuit has been known for reconstructing its quantum secrets, except particular classes, such as one proposed by Cleve, Gottesman and Lo. We propose a measurement-free reconstruction circuit of quantum secrets in quantum secret sharing based on stabilizer codes. Our reconstruction circuit has width $k+|J|$ and consists of $O(k|J|)$ one- or two-qudit unitary gates when $|J|$ participants reconstruct $k$-qudit quantum secrets.

quant-ph↗

arXiv2023

Performance comparison of the two reconstruction methods for stabilizer-based quantum secret sharing

Stabilizer-based quantum secret sharing has two methods to reconstruct a quantum secret: The erasure correcting procedure and the unitary procedure. It is known that the unitary procedure has a smaller circuit width. On the other hand, it is unknown which method has smaller depth and fewer circuit gates. In this paper, it is shown that the unitary procedure has smaller depth and fewer circuit gates when the circuits are designed for quantum secret sharing using $[[5, 1, 3]]$ binary stabilizer codes.

quant-ph↗