A scalable quantum computer with ultranarrow optical transition of ultracold neutral atoms in an optical lattice
A scalable quantum computer with ultranarrow optical transition of ultracold neutral atoms in an optical lattice
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DOI：
10.1007/s00340-009-3696-4
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发表时间：
2009-04
期刊：
影响因子：
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通讯作者：
K. Shibata;Shinya Kato;A. Yamaguchi;S. Uetake;Yoshiro Takahashi
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作者：
K. Shibata;Shinya Kato;A. Yamaguchi;S. Uetake;Yoshiro Takahashi
我们提出了一个新的量子计算方案，利用超冷中性镱原子在光学晶格中，特别是在单层三维光学晶格中。原子核的塞曼子能级定义了一个量子比特。这种选择避免了由于量子位之间的磁偶极相互作用而导致的自然相位演化。在长寿命亚稳态中具有大磁矩的塞曼子能级也被用来寻址单个原子和构建受控多量子比特门。该方案所需的估计参数表明，该建议是可扩展的和实验可行的。
We propose a new quantum-computing scheme using ultracold neutral ytterbium atoms in an optical lattice, especially in a monolayer of three-dimensional optical lattice. The nuclear Zeeman sublevels define a qubit. This choice avoids the natural phase evolution due to the magnetic dipole interaction between qubits. The Zeeman sublevels with large magnetic moments in the long-lived metastable state are also exploited to address individual atoms and to construct a controlled-multiqubit gate. Estimated parameters required for this scheme show that this proposal is scalable and experimentally feasible.