光电子快报(英文版), 2012, 8 (1): 63, Published Online: Jul. 12, 2017  

Programmable quantum logic gates using teleportation with non-maximally entangled states

LI Hui 1,2,*LI Chun-wen 1,2JIANG Min 1,3
Author Affiliations
1 Department of Automation, Tsinghua University, Beijing 100084, China
2 National Laboratory for Information Science and Technology, Center for Quantum Information Science and Technology, Tsinghua University, Beijing 100084, China
3 Department of Electronics and Information, Soochow University, Suzhou 215021, China
Abstract
A scheme is proposed for involving programmable quantum logic gates via teleportation, which is a unique technique in quantum mechanics. In our scheme, considering the inevitable decoherence caused by noisy environment, the quantum states are not maximally entangled. We show the implementation of single qubit quantum gates and controlled-NOT (CNOT) gate, which are universal quantum gates. Hence, any quantum gate can be implemented by using teleportation with non-maximally entangled states. Furthermore, two schemes in differet connections of universal gates are proposed and compared, and our results show the parallel connection outperforms the cascade connection.

LI Hui, LI Chun-wen, JIANG Min. Programmable quantum logic gates using teleportation with non-maximally entangled states[J]. 光电子快报(英文版), 2012, 8(1): 63.

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