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Secure Direct Communication Based on Non-Orthogonal Entangled Pairs and Local Measurement

Xiao-Jie Yi, Yi-you Nie, Nanrun Zhou +2 more

International Journal of Theoretical PhysicsJun 12, 200813 citations

Quantum secure direct communication with entanglement source and single-photon measurement

Lu Yang, Jiawei Wu, Zaisheng Lin +2 more

Science China Physics Mechanics and AstronomyAug 25, 202048 citations

Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

Yi Xiao

We present a scheme for quantum secure direct communication,in which the message is encoded by local unitary operations,transmitted through entangled photons,and deduced from both the sender and receiver's local measurement results.In such a scheme,only one pair of entangled photons is consumed,and there is no need to transmit the sender's qubit carrying the secret message in a public channel,in order to transmit two-bit classical information.

理论物理通讯：英文版Jan 1, 20080 citations

Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

Yi Xiao-Jie, Yi-you Nie, Nanrun Zhou +3 more

We present a scheme for quantum secure direct communication, in which the message is encoded by local unitary operations, transmitted through entangled photons, and deduced from both the sender and receiver's local measurement results. In such a scheme, only one pair of entangled photons is consumed, and there is no need to transmit the sender's qubit carrying the secret message in a public channel, in order to transmit two-bit classical information.

Communications in Theoretical PhysicsJul 1, 20085 citations

Quantum Secure Direct Communication by Using General Entangled States

Yan-Hua Wu, Wei-Dong Zhai, Wen-Zhen Cao +1 more

International Journal of Theoretical PhysicsOct 19, 201026 citations

Efficient quantum secure direct communication with complete Bell‐state measurement

Cheng‐Yan Gao, Peng‐Liang Guo, Bao‐Cang Ren

Quantum secure direct communication (QSDC) is a powerful technique of transmitting confidential information directly and securely based on the pre-established secure quantum channel and block transmission. Here we propose an efficient QSDC protocol using the complete Bell-state measurement (CBSM) resorting to linear optical elements and temporal-polarization hyperentanglement. In this protocol, the polarized entangled photons are utilized as the information carrier, and all the detection events of CBSM can be identified with common single-photon detectors instead of photon number resolving detectors due to the introduction of temporal degree of freedom (DOF). Moreover, since all the two-photon detection events in CBSM are effective and can be preserved with the efficiency of 100% rather than 50% in the previous QSDC, the quantum efficiency of QSDC can be doubled by encoding more messages on entangled photon pairs.Quantum secure direct communication (QSDC) is a powerful technique of transmitting confidential information directly and securely based on the pre-established secure quantum channel and block transmission. Here we propose an efficient QSDC protocol using the complete Bell-state measurement (CBSM) resorting to linear optical elements and temporal-polarization hyperentanglement. In this protocol, the polarized entangled photons are utilized as the information carrier, and all the detection events of CBSM can be identified with common single-photon detectors instead of photon number resolving detectors due to the introduction of temporal degree of freedom (DOF). Moreover, since all the two-photon detection events in CBSM are effective and can be preserved with the efficiency of 100% rather than 50% in the previous QSDC, the quantum efficiency of QSDC can be doubled by encoding more messages on entangled photon pairs.

Quantum EngineeringNov 3, 202123 citations

Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

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Quantum Secure Direct Communication Using Entangled Photon Pairs and Local Measurement

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