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arXiv 0802.3631quant-ph
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利用Rydberg激发阻断和绝热通过实现量子门和多粒子纠缠

Quantum gates and multi-particle entanglement by Rydberg excitation blockade and adiabatic passage

Ditte Moller, Lars Bojer Madsen, Klaus Molmer

摘要:

我们提出利用受激绝热过程将原子从基态转移到里德伯激发态。几微米远的原子经历里德伯态之间的偶极-偶极相互作用,这种相互作用足够强,可以改变原子共振,抑制多个原子的激发。我们发现,在这种相互作用的存在下,两个原子之间的绝热通道导致强大的最大纠缠态的创建和两位量子门。对于许多原子,激发阻断导致集体自旋和Jaynes-Cummings类哈密顿量的有效实施,我们表明,绝热通过可以用来产生集体Jx=0本征态和Greenberger-Horne-Zeilinger态的几十个原子。

英文摘要:

We propose to apply stimulated adiabatic passage to transfer atoms from their ground state into Rydberg excited states. Atoms a few micrometers apart experience a dipole-dipole interaction among Rydberg states that is strong enough to shift the atomic resonance and inhibit excitation of more than a single atom. We show that the adiabatic passage in the presence of this interaction between two atoms leads to robust creation of maximally entangled states and to two-bit quantum gates. For many atoms, the excitation blockade leads to an effective implementation of collective-spin and Jaynes-Cummings-like Hamiltonians, and we show that the adiabatic passage can be used to generate collective Jx=0 eigenstates and Greenberger-Horne-Zeilinger states of tens of atoms.

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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