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arXiv 0705.0312quant-ph
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单原子量子比特在光镊中的二维输运和转移

Two-dimensional transport and transfer of a single atomic qubit in optical tweezers

J. Beugnon, C. Tuchendler, H. Marion, A. Gaetan, Y. Miroshnychenko, Y. R. P. Sortais, A. M. Lance, M. P. A. Jones, G. Messin, A. Browaeys, P. Grangier

摘要:

量子计算机有能力在某些计算问题上超越经典计算机。已经提出了几种可扩展的量子计算架构。一个有吸引力的架构是一组物理上独立的量子位,排列在三个空间区域中,其中(i)初始化的量子位存储在寄存器中,(ii)两个量子位被放在一起以实现门,以及(iii)执行量子位的读出。对于基于中性原子的架构,连接这些区域的一种自然方法是使用光镊在系统内移动量子位。在这封信中,我们演示了量子比特的相干传输,编码在一个亚微米镊子中捕获的原子上,在一个典型的光阱阵列中原子之间的距离。此外,我们在两个镊子之间转移一个量子比特,并表明这种操作也保持了量子比特的相干性。

英文摘要:

Quantum computers have the capability of out-performing their classical counterparts for certain computational problems. Several scalable quantum computing architectures have been proposed. An attractive architecture is a large set of physically independant qubits, arranged in three spatial regions where (i) the initialized qubits are stored in a register, (ii) two qubits are brought together to realize a gate, and (iii) the readout of the qubits is performed. For a neutral atom-based architecture, a natural way to connect these regions is to use optical tweezers to move qubits within the system. In this letter we demonstrate the coherent transport of a qubit, encoded on an atom trapped in a sub-micron tweezer, over a distance typical of the separation between atoms in an array of optical traps. Furthermore, we transfer a qubit between two tweezers, and show that this manipulation also preserves the coherence of the qubit.

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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