Implementations of more general solid-state (SWAP)$^{1/m}$ and controlled-(swap)$^{1/m}$ gates

• URL: http://arxiv.org/abs/2001.03428v1
• Date: Fri, 10 Jan 2020 13:21:45 GMT
• Title: Implementations of more general solid-state (SWAP)$^{1/m}$ and controlled-(swap)$^{1/m}$ gates
• Authors: Wen-Qiang Liu and Hai-Rui Wei
• Abstract summary: Universal quantum gates are the core elements in quantum information processing. We design two schemes to realize more general (SWAP)$1/m$ gates. $m$ is easily controlled by adjusting two quarter-wave plates and one half-wave plate.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Universal quantum gates are the core elements in quantum information processing. We design two schemes to realize more general (SWAP)$^{1/m}$ and controlled--(swap)$^{1/m}$ gates (for integer $m\geq1$) by directing flying single photons to solid--state quantum dots. The parameter $m$ is easily controlled by adjusting two quarter--wave plates and one half--wave plate. Additional computational qubits are not required to construct the two gates. Evaluations of the gates indicate that our proposals are feasible with current experimental technology.

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