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arXiv · 1310.6184

Long range universal quantum computation in large-size coupled cavity array independent of cavity number

Xiao-Qiang Shao·Tai-Yu Zheng·Jia-Bin You·C. H. Oh·Shou Zhang
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Abstract

We present a new approach for implementing a $\sqrt{\rm swap}$ gate between two spatially far apart sites connected by a large-size coupled cavity array as quantum bus. The duration is only related to the parity of cavity number but independent of a specific number of cavity, thus it is possible to process quantum information in an arbitrary long distance in principle without time varied. Referring to the recent experimental progresses on coupled-cavity array, we also make an assessment of the scalability and take the cavity number $N$ = 5 as an example to illustrate the robustness of our proposal via quantum process tomography.

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Xiao-Qiang Shao, Tai-Yu Zheng, Jia-Bin You, C. H. Oh, Shou Zhang. 2013-10-23. Long range universal quantum computation in large-size coupled cavity array independent of cavity number. https://doi.org/10.1088/1612-2011%2F11%2F10%2F105203

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