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相关论文: Fluorescence photon measurements from single quant…

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We experimentally demonstrate the efficient channeling of fluorescence photons from single q-dots on optical nanofiber into the guided modes, by measuring the photon-count rates through the guided and radiation modes simultaneously. We…

量子物理 · 物理学 2015-06-04 Ramachandrarao Yalla , Fam Le Kien , M. Morinaga , K. Hakuta

We demonstrate a fiber in-line single photon source based on a hybrid system of colloidal single quantum dots deposited on an optical nanofiber and cooled down to cryogenic temperature (3.7 K). We show that a charged state (trion) of the…

光学 · 物理学 2020-03-16 K. Muhammed Shafi , Kali P. Nayak , Akiharu Miyanaga , Kohzo Hakuta

We demonstrate a spectrally broadband and effcient technique for collecting photoluminescence from a single InAs quantum dot directly into a standard single mode optical fiber. In this approach, an optical fiber taper waveguide is placed in…

光学 · 物理学 2015-05-27 M. Davanco , M. T. Rakher , W. Wegscheider , D. Schuh , A. Badolato , K. Srinivasan

We demonstrate a bright and polarized fiber in-line single photon source based on plasmon-enhanced emission of colloidal single quantum dots into an optical nanofiber. We show that emission properties of single quantum dots can be strongly…

量子物理 · 物理学 2022-06-28 K. Muhammed Shafi , Ramachandrarao Yalla , Kali P. Nayak

We demonstrate how optical nanofibers can be used to manipulate and probe single-atom fluorescence. We show that fluorescence photons from a very small number of atoms, average atom number of less than 0.1, around the nanofiber can readily…

量子物理 · 物理学 2007-05-23 K. P. Nayak , P. N. Melentiev , M. Morinaga , Fam Le Kien , V. I. Balykin , K. Hakuta

Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. 7.4 +/- 1.2 % of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300-nm-diameter…

We demonstrate the channeling of fluorescence photons from quantum dots (QDs) into guided modes of an optical nanofiber tip (ONFT). We deposit QDs on the ONFT using micro/nano fluidic technology. We measure the photon-counting and emission…

量子物理 · 物理学 2024-04-18 Resmi M , Elaganuru Bashaiah , Ramachandrarao Yalla

We demonstrate a single-photon collection efficiency of $(44.3\pm2.1)\%$ from a quantum dot in a low-Q mode of a photonic-crystal cavity with a single-photon purity of $g^{(2)}(0)=(4\pm5)\%$ recorded above the saturation power. The high…

量子物理 · 物理学 2014-10-14 K. H. Madsen , S. Ates , J. Liu , A. Javadi , S. M. Albrecht , I. Yeo , S. Stobbe , P. Lodahl

We perform balanced homodyne detection of the electromagnetic field in a single-mode tapered optical nanofiber surrounded by rubidium atoms in a magneto-optical trap. Resonant fluorescence of atoms into the nanofiber mode manifests itself…

We describe a robust and reliable fluorescence detector for single atoms that is fully integrated into an atom chip. The detector allows spectrally and spatially selective detection of atoms, reaching a single atom detection efficiency of…

We demonstrate an optical tweezer based single atom trapping on an optical nanofiber cavity. We show that the fluorescence of single atoms trapped on the nanofiber cavity can be readily observed in real-time through the fiber guided modes.…

原子物理 · 物理学 2019-11-27 Kali P. Nayak , Jie Wang , Jameesh Keloth

Many photonic quantum information processing applications would benefit from a high brightness, fiber-coupled source of triggered single photons. Here, we present a fiber-coupled photonic-crystal waveguide single-photon source relying on…

A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network based on today's existing fiber infrastructure. Here, we develop a Purcell enhanced, polarized source of single photons at…

量子物理 · 物理学 2022-03-04 Masakazu Sugawara , Yining Xuan , Yasuyoshi Mitsumori , Keiichi Edamatsu , Mark Sadgrove

A diamond nano-crystal hosting a single nitrogen vacancy (NV) center is optically selected with a confocal scanning microscope and positioned deterministically onto the subwavelength-diameter waist of a tapered optical fiber (TOF) with the…

We demonstrate a robust fiber-optics-based fluorescence detector, fully integrated on an atom chip, which detects single atoms propagating in a guide with 66% efficiency. We characterize the detector performance and the atom flux by…

量子物理 · 物理学 2009-03-24 Dennis Heine , Marco Wilzbach , Thomas Raub , Björn Hessmo , Jörg Schmiedmayer

We perform extended numerical studies to maximize the overall photon coupling efficiency of fiber-coupled quantum dot single-photon sources emitting in the near-infrared and telecom regime. Using the finite element method, we optimize the…

We demonstrate efficient in-plane optical fiber collection of single photon emission from quantum dots embedded in photonic crystal cavities. This was achieved via adiabatic coupling between a tapered optical fiber and a tapered on-chip…

Deterministic coupling between photonic nodes in a quantum network is an essential step towards implementing various quantum technologies. The omnidirectionality of free-standing emitters, however, makes this coupling highly inefficient, in…

Combining resonant excitation with Purcell-enhanced single quantum dots (QDs) stands out as a prominent strategy for realizing high performance solid-state single photon sources. However, optimizing photon efficiency requires addressing…

量子物理 · 物理学 2024-03-19 Zhixuan Rao , Jiawei Yang , Changkun Song , Mujie Rao , Ziyang Zheng , Luyu Liu , Xuebin Peng , Ying Yu , Siyuan Yu

We have demonstrated efficient production of triggered single photons by coupling a single semiconductor quantum dot to a three-dimensionally confined optical mode in a micropost microcavity. The efficiency of emitting single photons into a…

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