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Paper detail

Quantum Information transmission

We present a scheme of quantum information transmission, which transmits the quantum information contained in a single qubit via the quantum correlation shared by two parties (a two-qubit channel), whose quantum discord is non-zero. We demonstrate that the quantum correlation, which may have no entanglement, is sufficient to transmit the information of a quantum state. When the correlation matrix of the two-qubit channel is of full rank (rank three), the information of the qubit in either a mixed state or a pure state can be transmitted. The quantum discord of a channel with rank larger than or equal to three is always non-zero. Therefore, non-zero quantum discord is also necessary for our quantum information transmission protocol.

preprint2012arXivOpen access
Lei WangJie-Hui HuangJonathan P. DowlingShi-Yao Zhu
quant-ph
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Lei WangJie-Hui HuangJonathan P. DowlingShi-Yao Zhu

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