Quantum state manipulation of single-Cesium-atom qubit in a micro-optical trap
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- 作者：Zhi-Hui Wang ; Gang Li ; Ya-Li Tian ; Tian-Cai Zhang
- 关键词：qubit ; single atom ; Rabi flopping ; spin ; echo ; dephasing time
- 刊名：Frontiers of Physics
- 出版年：2014
- 出版时间：October 2014
- 年：2014
- 卷：9
- 期：5
- 页码：634-639
- 全文大小：639 KB
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Gang Li (1)
Ya-Li Tian (1)
Tian-Cai Zhang (1)
1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, 030006, China - ISSN：2095-0470
文摘
Based on single Cesium atoms trapped in a 1064 nm microscopic optical trap we have exhibited a single qubit encoded in the Cesium “clock states- The single qubit initialization, detection and the fast state rotation with high efficiencies are demonstrated and this state manipulation is crucial for quantum information processing. The ground states Rabi flopping rate of 229.0 ± 0.6 kHz is realized by a two-photon Raman process. A clock states dephasing time of 3.0±0.7 ms is measured, while an irreversible homogeneous dephasing time of 124±17 ms is achieved by using the spin-echo technique. This well-controlled single atom provides an idea quantum qubit and quantum node for quantum information processing.