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arXiv quant-ph/0505199quant-phcond-mat.mes-hallphysics.atom-ph
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工程纠缠:快速接近的相位门

Engineering Entanglement: The Fast-Approach Phase Gate

Dan Vager, Bilha Segev, Y. B. Band

摘要:

最佳控制技术和快速接近方案被用来实现碰撞控制相位门的模型中的冷原子在光晶格,显着减少门时间相比,绝热演化,同时保持高保真度。给出了新的目标泛函的最佳路径的演化,产生一个控制相位门单原子拉比位移。此外,在最近的实验中,快速接近程序被用来设计一条路径,以显着提高非绝热传输的保真度。此外,相位门的纠缠功率进行了量化。

英文摘要:

Optimal-control techniques and a fast-approach scheme are used to implement a collisional control phase gate in a model of cold atoms in an optical lattice, significantly reducing the gate time as compared to adiabatic evolution while maintaining high fidelity. New objective functionals are given for which optimal paths are obtained for evolution that yields a control-phase gate up to single-atom Rabi shifts. Furthermore, the fast-approach procedure is used to design a path to significantly increase the fidelity of non-adiabatic transport in a recent experiment. Also, the entanglement power of phase gates is quantified.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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