CdSe/ZnS colloidal quantum dots generally exist as blinking phenomena during the luminescence process that remarkably influences its applications. In this work, we used the surface plasmonic effect to effectively modulate single quantum dots. Obvious contrasts have been observed by comparing single quantum dots on silica and gold films. The surface plasmon is shown to obviously suppress the blinking of single quantum dots. With further demonstrated second- order correlation measurements, an anti-bunching effect was observed. The anti-bunching dip gives the smallest value of g⁽²⁾(0) = 0.15, and the lifetime of the exciton has been reduced. This method presents the application’s potential towards tunable high-emitting-speed single photon sources at room temperature.

© 2010 Optical Society of America

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4. H. Mattoussi, J. M. Mauro, E. R. Goldman, G. P. Anderson, V. C. Sundar, F. V. Mikulec, and M. G. Bawendi, "Self-assembly of CdSe/ZnS quantum dot bioconjugates using an engineered recombinant protein," J. Am. Chem. Soc. 122,12142-12150 (2000). [CrossRef]
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6. Y. Fedutik, V. V. Temnov, O. Sch¨ops, U. Woggon, and M. V. Artemyev, "Exciton-plasmon-photon conversion in plasmonic nanostructures," Phys. Rev. Lett. 99,136802 (2007). [CrossRef] [PubMed]
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8. C. Yang, Z. Zhong, and C. M. Lieber, "Encoding electronic properties by synthesis of axial modulation-doped silicon nanowires," Science 310,1304-1307 (2005). [CrossRef] [PubMed]
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25. K. Sebald, P. Michler, T. Passow, D. Hommel, G. Bacher, and A. Forchel, "Single-photon emission of CdSe quantum dots at temperatures up to 200 K," Appl. Phys. Lett. 81,2920-2922 (2002). [CrossRef]
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28. X. Wang, X. Ren, K. Kahen, M. A. Hahn, M. Rajeswaran, S. Maccagnano-Zacher, J. Silcox, G. E. Cragg, A. L. Efros, and T. D. Krauss, "Non-blinking semiconductor nanocrystals," Nature 459,686-689 (2009). [CrossRef] [PubMed]
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Adv. Mater.

• Q1. F. Koberling, A. Mews, and T. Basch’e, "Oxygen-induced blinking of single CdSe nanocrystals," Adv. Mater. 13,672-676 (2000). [CrossRef]

Appl. Phys. Lett.

• C. T. Yuan, P. Yu, and J. Tang, "Blinking suppression of colloidal CdSe/ZnS quantum dots by coupling to silver nanoprisms," Appl. Phys. Lett. 94,243108 (2009). [CrossRef]
• M. T. Cheng, S. D. Liu, and Q. Q. Wang, "Modulating emission polarization of semiconductor quantum dots through surface plasmon of metal nanorod," Appl. Phys. Lett. 92,162107 (2008). [CrossRef]
• K. Sebald, P. Michler, T. Passow, D. Hommel, G. Bacher, and A. Forchel, "Single-photon emission of CdSe quantum dots at temperatures up to 200 K," Appl. Phys. Lett. 81,2920-2922 (2002). [CrossRef]

Chem. Phys. Lett.

• B. Lounis, H. A. Bechtel, D. Gerion, A. P. Alivisatos, and W. E. Moerner, "Photon antibunching in single CdSe/ZnS quantum dot fluorescence," Chem. Phys. Lett. 329,399-404 (2000). [CrossRef]

J. Am. Chem. Soc.

• H. Mattoussi, J. M. Mauro, E. R. Goldman, G. P. Anderson, V. C. Sundar, F. V. Mikulec, and M. G. Bawendi, "Self-assembly of CdSe/ZnS quantum dot bioconjugates using an engineered recombinant protein," J. Am. Chem. Soc. 122,12142-12150 (2000). [CrossRef]

J. Chem. Phys.

• M. Kuno, D. P. Fromm, H. F. Hamann, A. Gallagher, and D. J. Nesbitt, "Nonexponential ’blinking’ kinetics of single CdSe quantum dots: a universal power law behavior," J. Chem. Phys. 112,3117-3120 (2000). [CrossRef]

Nano Lett.

• S. Schietinger, M. Barth, T. Aichele, and O. Benson, "Plasmon-enhanced single photon emission from a nanoassembled metal-diamond hybrid structure at room temperature," Nano Lett. 9,1694-1698 (2009). [CrossRef] [PubMed]
• A. O. Govorov, G. W. Bryant, W. Zhang, T. Skeini, J. Lee, N. A. Kotov, J. M. Slocik, and R. R. Naik, "Excitonplasmon interaction and hybrid excitons in semiconductor-metal nanoparticle assemblies," Nano Lett. 6,984-994 (2006). [CrossRef]

Nature

• X. Wang, X. Ren, K. Kahen, M. A. Hahn, M. Rajeswaran, S. Maccagnano-Zacher, J. Silcox, G. E. Cragg, A. L. Efros, and T. D. Krauss, "Non-blinking semiconductor nanocrystals," Nature 459,686-689 (2009). [CrossRef] [PubMed]
• J. P. Reithmaier, G. Sek, A. L¨offler, C. Hofmann, S. Kuhn, S. Reitzenstein, L. V. Keldysh, V. D. Kulakovskii, T. L. Reinecke, and A. Forchel, "Strong coupling in a single quantum dot-semiconductor microcavity system," Nature 432,197-200 (2004). [CrossRef] [PubMed]
• P. Michler, A. Imamo˘glu, M. D. Mason, P. J. Carson, G. F. Strouse, and S. K. Buratto, "Quantum correlation among photons from a single quantum dot at room temperature," Nature 406,968-970 (2000). [CrossRef] [PubMed]
• T. Yoshie, A. Scherer, J. Hendrickson, G. Khitrova, H. M. Gibbs, G. Rupper, C. Ell, O. B. Shchekin, and D. G. Deppe, "Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity," Nature 432,200-203 (2004). [CrossRef] [PubMed]

Opt. Express

• P. Bharadwaj and L. Novotny, "Spectral dependence of single molecule fluorescence enhancement," Opt. Express 15,14266-14274 (2007). [CrossRef] [PubMed]

Phys. Rev. A

• E. Waks, C. Santori, and Y. Yamamoto, "Security aspects of quantum key distribution with sub-Poisson light," Phys. Rev. A 66,042315 (2002). [CrossRef]
• D. Loss and D. P. DiVincenzo, "Quantum computation with quantum dots," Phys. Rev. A 57,120-126 (1998). [CrossRef]

Phys. Rev. B

• Y. Ito, K. Matsuda, and Y. Kanemitsu, "Mechanism of photoluminescence enhancement in single semiconductor nanocrystals on metal surfaces," Phys. Rev. B 75,033309 (2007). [CrossRef]
• K. T. Shimizu, R. G. Neuhauser, C. A. Leatherdale, S. A. Empedocles,W. K. Woo, and M. G. Bawendi, "Blinking statistics in single semiconductor nanocrystal quantum dots," Phys. Rev. B 63,205316 (2001). [CrossRef]
• M. Califano, A. Franceschetti, and A. Zunger, "Lifetime and polarization of the radiative decay of excitons, biexcitons, and trions in CdSe nanocrystal quantum dots," Phys. Rev. B 75,115401 (2007). [CrossRef]
• C. Becker, A. Kiraz, P. Michler, A. Imamoglu, W. V. Schoenfeld, P. M. Petroff, L. D. Zhang, and E. Hu, "Nonclassical radiation from a single self-assembled InAs quantum dot," Phys. Rev. B 63,121312 (2001). [CrossRef]

Phys. Rev. Lett.

• K. T. Shimizu, W. K. Woo, B. R. Fisher, H. J. Eisler, and M. G. Bawendi, "Surface-enhanced emission from single semiconductor nanocrystals," Phys. Rev. Lett. 89,117404 (2002). [CrossRef]
• C. Kurtsiefer, S. Mayer, P. Zarda, and H. Weinfurter, "Stable solid-state source of single photons," Phys. Rev. Lett. 85,290-293 (2000). [CrossRef] [PubMed]
• S. K¨uhn, U. H°akanson, L. Rogobete, and V. Sandoghdar, "Enhancement of single-molecule fluorescence using a gold nanoparticle as an optical nanoantenna," Phys. Rev. Lett. 97,017402 (2006). [CrossRef] [PubMed]
• H. J. Kimble, M. Dagenais, and L. Mandel, "Photon antibunching in resonance fluorescence," Phys. Rev. Lett. 39,691-695 (1977). [CrossRef]
• Y. Fedutik, V. V. Temnov, O. Sch¨ops, U. Woggon, and M. V. Artemyev, "Exciton-plasmon-photon conversion in plasmonic nanostructures," Phys. Rev. Lett. 99,136802 (2007). [CrossRef] [PubMed]

Rep. Prog. Phys.

• B. Lounis and M. Orrit, "Single-photon sources," Rep. Prog. Phys. 68,1129-1179 (2005). [CrossRef]

Rev. Mod. Phys.

• M. Moskovits, "Surface-enhanced spectroscopy," Rev. Mod. Phys. 57,783-826 (1985). [CrossRef]

Science

• C. Yang, Z. Zhong, and C. M. Lieber, "Encoding electronic properties by synthesis of axial modulation-doped silicon nanowires," Science 310,1304-1307 (2005). [CrossRef] [PubMed]
• V. I. Klimov, A. A. Mikhailovsky, D. W. McBranch, C. A. Leatherdale, and M. G. Bawendi, "Quantization of multiparticle Auger rates in semiconductor quantum dots," Science 287,1011-1013 (2000). [CrossRef] [PubMed]

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