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Demonstration of a state-insensitive, compensated nanofiber trap

Goban, A. and Choi, K. S. and Alton, D. J. and Ding, D. and Lacroûte, C. and Pototschnig, M. and Thiele, T. and Stern, N. P. and Kimble, H. J. (2012) Demonstration of a state-insensitive, compensated nanofiber trap. Physical Review Letters, 109 (3). Art. No. 033603 . ISSN 0031-9007. doi:10.1103/PhysRevLett.109.033603.

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We report the experimental realization of an optical trap that localizes single Cs atoms ≃ 215 nm from surface of a dielectric nanober. By operating at magic wavelengths for pairs of counterpropagating red- and blue-detuned trapping beams, dierential scalar light shifts are eliminated, and vector shifts are suppressed by ≈ 250. We thereby measure an absorption linewidth Γ/2π = 5.7 ± 0.1 MHz for the Cs 6S_(1/2), F = 4 → 6P_(3/2), F' = 5 transition, where Γ_0/2π = 5.2 MHz in free space. Optical depth d ≃ 66 is observed, corresponding to an optical depth per atom d_1 ≃ 0.08. These advances provide an important capability for the implementation of functional quantum optical networks and precision atomic spectroscopy near dielectric surfaces.

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Additional Information:© 2012 American Physical Society. Received 4 March 2012; published 19 July 2012. We gratefully acknowledge the contributions of D. Chang, I. Cirac, A. Gorshkov, L. Jiang, J. A. Muniz Silva, and E. Polzik. Funding at Caltech is provided by the IQIM, an NSF Physics Frontier Center with support of the Gordon and Betty Moore Foundation, by the AFOSR QuMPASS MURI, by the DoD NSSEFF program, and by NSF Grant No. PHY0652914. A.G. is supported by the Nakajima Foundation. The research of K. S. C. at KIST is supported by the KIST Institutional Programs (No. 2E22732 and No. 2Z03610). A. Goban, K. S. Choi, and D. J. Alton contributed equally to this work.
Group:Institute for Quantum Information and Matter
Funding AgencyGrant Number
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
National Security Science and Engineering Faculty FellowshipUNSPECIFIED
Nakajima FoundationUNSPECIFIED
Korea Institute of Science and Technology (KIST)2E22732
Korea Institute of Science and Technology (KIST)2Z03610
Issue or Number:3
Classification Code:PACS: 42.50.Ct, 37.10.Gh, 37.10.Jk, 42.50.Ex
Record Number:CaltechAUTHORS:20120515-133717073
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31475
Deposited By: Joy Painter
Deposited On:15 May 2012 21:06
Last Modified:09 Nov 2021 19:53

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