Quantum secure direct communication over the collective amplitude damping channel
| Autor: | Su-Juan Qin, Fu-Chen Zhu, Luo-Ming Meng, Qiao-Yan Wen |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Quantum network Data_CODINGANDINFORMATIONTHEORY Quantum capacity Quantum channel Topology Classical capacity Quantum error correction Quantum mechanics Quantum algorithm Quantum information Amplitude damping channel Computer Science::Cryptography and Security Computer Science::Information Theory |
| Zdroj: | Science in China Series G: Physics, Mechanics and Astronomy. 52:1208-1212 |
| ISSN: | 1862-2844 1672-1799 |
| DOI: | 10.1007/s11433-009-0140-z |
| Popis: | An efficient quantum secure direct communication protocol is presented over the amplitude damping channel. The protocol encodes logical bits in two-qubit noiseless states, and so it can function over a quantum channel subjected to collective amplitude damping. The feature of this protocol is that the sender encodes the secret directly on the quantum states, the receiver decodes the secret by performing determinate measurements, and there is no basis mismatch. The transmission’s safety is ensured by the nonorthogonality of the noiseless states traveling forward and backward on the quantum channel. Moreover, we construct the efficient quantum circuits to implement channel encoding and information encoding by means of primitive operations in quantum computation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|