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A scanning probe-based pick-and-place procedure for assembly of integrated quantum optical hybrid devices
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Schematics of the setup used to pre-characterize and pick up nanodiamonds. (b) Example of an autocorrelation measurement of fluorescence from an NV center in a nanodiamond showing pronounced antibunching. The repetition rate of the pulsed excitation laser at 532 nm was . (c) Spectrum of the same NV center with a zero phonon line peak at .

Image of FIG. 2.
FIG. 2.

Photograph the body of a Zeiss Axiovert 200 microscope converted to a confocal microscope with the AFM atop (a) and removed (b), respectively. (c) Top-view photograph of the homebuilt confocal microscope. (d) Detailed view of a special holder consisting of three posts for mounting the AFM to approach complex shaped items, e.g., an optical fiber. The dashed circles label the AFM mounts, 1 labels the sample holder, and 2 labels the piezo sample scanner.

Image of FIG. 3.
FIG. 3.

(a) AFM topography image of a nanodiamond in the spot of a confocal microscope's laser. (b) Optical image, i.e., detected fluorescence signal versus tip position. In this measurement the collected fluorescence is reduced when the tip scans across the diamond nanoparticle (see text). Scalebars in (a,b) are . (c) Detected fluorescence signal when picking up the diamond. The fluorescence increases when the tip is at the sample surface. After the first unsuccessful attempt where the fluorescence had fully recovered the pick up procedure was repeated, and finally the nano-diamond was picked up indicated by a drop of the fluorescence signal to the background level.

Image of FIG. 4.
FIG. 4.

Scheme of the nanodiamond pick-and-place procedure. (a) The sample is scanned in the confocal microscope in order to find and optically characterize a nanodiamond. (b) The AFM tip is scanned across the focal region of the microscope to identify the chosen nanodiamond. (c) The tip is pressed on the nanodiamond. (d) The nanodiamond sticks to the tip. (e) The tip is pressed on a new structure to deposit the nanodiamond. (f) The diamond is positioned at the desired position.

Image of FIG. 5.
FIG. 5.

(a) and (b) AFM image of the core of a photonic crystal fiber before and after placing a nanodiamond, respectively. (c) A nanodiamond placed inside a gallium phosphide photonic crystal membrane cavity. The thickness of the free-standing membrane is ∼. All scalebars are .

Image of FIG. 6.
FIG. 6.

SEM image of Pt/Ti coated cantilever used for the pick-and-place procedure. The tip has flattened by being pressed on the surface in order to pick up a nanodiamond. Scalebar is .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A scanning probe-based pick-and-place procedure for assembly of integrated quantum optical hybrid devices