aqora

Many facets of multiparty broadcasting of known quantum information using optimal quantum resource

Satish Kumar, Anirban Pathak

arXiv:2305.00389Quantum Information ProcessingApr 23, 20243 citations

Quantum information transmission

Lei Wang, Jie‐Hui Huang, Jonathan P. Dowling +1 more

arXiv:1106.5097Quantum Information ProcessingJun 27, 201217 citations

Quantum information distribution without quantum channel

Zichen Yang, Zeyang Fan, Liang-Zhu Mu +1 more

We investigate the optimal quantum state distribution from cloud to many spatially separated users by measure-broadcast-prepare scheme without the availability of quantum channel. The quantum information equally distributed from cloud to arbitrary number of users is generated at each port by ensemble of known quantum states with assistance of classical information of measurement outcomes by broadcasting. The obtained quantum state for each user is optimal in the sense that the fidelity universally achieves the upper bound. We present the universal quantum state distribution by providing physical realizable measurement bases in the cloud as well as the reconstruction method for each user. The quantum information distribution scheme works for arbitrary many identical pure input states in general dimensional system.We investigate the optimal quantum state distribution from cloud to many spatially separated users by measure-broadcast-prepare scheme without the availability of quantum channel. The quantum information equally distributed from cloud to arbitrary number of users is generated at each port by ensemble of known quantum states with assistance of classical information of measurement outcomes by broadcasting. The obtained quantum state for each user is optimal in the sense that the fidelity universally achieves the upper bound. We present the universal quantum state distribution by providing physical realizable measurement bases in the cloud as well as the reconstruction method for each user. The quantum information distribution scheme works for arbitrary many identical pure input states in general dimensional system.

Oct 6, 20170 citations

Transmission and Processing Quantum Information

C. H. Bennett

Jan 1, 19980 citations

Superbroadcasting of continuous variable mixed states

Giacomo Mauro D’Ariano, Paolo Perinotti, Massimiliano Federico Sacchi

We consider the problem of broadcasting quantum information encoded in the average value of the field from N to M>N copies of mixed states of radiation modes. We derive the broadcasting map that preserves the complex amplitude, while optimally reducing the noise in conjugate quadratures. We find that from two input copies broadcasting is feasible, with the possibility of simultaneous purification (superbroadcasting). We prove similar results for purification (M<=N) and for phase-conjugate broadcasting.We consider the problem of broadcasting quantum information encoded in the average value of the field from N to M>N copies of mixed states of radiation modes. We derive the broadcasting map that preserves the complex amplitude, while optimally reducing the noise in conjugate quadratures. We find that from two input copies broadcasting is feasible, with the possibility of simultaneous purification (superbroadcasting). We prove similar results for purification (M<=N) and for phase-conjugate broadcasting.

arXiv:quant-ph/0601114New Journal of PhysicsJun 13, 200612 citations

Transmitting classical information on the quantum network efficiently

一雄岩間, 治道西村, ルディレイモンド +1 more

電子情報通信学会技術研究報告. COMP, コンピュテーションDec 15, 20050 citations

Optimal Broadcasting of Quantum Information via Teleporation

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