Approximate recoverability of quantum states and noisy quantum secret sharing schemes
- 講者Yingkai Ouyang 先生 (新加坡國立大學量子情報研究所)
邀請人：鐘楷閔 - 時間2022-12-14 (Wed.) 10:45 ~ 12:45
- 地點資訊所新館106演講廳
摘要
We consider the theory of approximate quantum secret sharing in a formal cryptographic setting. A dealer encodes a quantum secret and distributes it amongst multiple players such that authorized sets of players can approximately recover the secret.
Adversaries control all of the universe, except for authorized sets of players, and establish effective channels between the quantum secret and themselves. We relate the approximate recoverability of the secret to $C$, where $C$ is the maximum entanglement-assisted capacities of these channels. This thereby establishes a fundamental duality between information received by complementary parties, and has applications beyond quantum cryptography.
Adversaries control all of the universe, except for authorized sets of players, and establish effective channels between the quantum secret and themselves. We relate the approximate recoverability of the secret to $C$, where $C$ is the maximum entanglement-assisted capacities of these channels. This thereby establishes a fundamental duality between information received by complementary parties, and has applications beyond quantum cryptography.