期刊
NEW JOURNAL OF PHYSICS
卷 18, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/18/9/093038
关键词
single-photon source; quantum non-Gaussian; trapped ion
资金
- Austrian Science Fund FWF(SINFONIA, SFB FoQuS)
- Czech Science Foundation [GB14-36681G]
- European Union [227959]
- Institut fur Quanteninformation GmbH
- Austrian Science Fund (FWF) [P23022] Funding Source: Austrian Science Fund (FWF)
- European Research Council (ERC) [227959] Funding Source: European Research Council (ERC)
- Austrian Science Fund (FWF) [P 23022] Funding Source: researchfish
Single atoms or atom-like emitters are the purest source of single photons, they are intrinsically incapable of multi-photon emission. To demonstrate this degree of photon number-state purity we have realized a single-photon source using a single ion trapped at the common focus of high numerical aperture lenses. Our trapped-ion source produces single-photon pulses with g(2)(0)=(1.9 +/- 0.2) x 10(-3) without any background subtraction. After subtracting detector dark counts the residual g(2) (0) is less than 3 x 10(-4) (95% confidence interval). The multi-photon component of the source light field is low enough that we measure violation of a quantum non-Gaussian state witness, by this characterization the source output is indistinguishable from ideal attenuated single photons. In combination with efforts to enhance collection efficiency from single emitters, our results suggest that single trapped ions are not only ideal stationary qubits for quantum information processing, but promising sources of light for scalable optical quantum networks.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据