3 research outputs found
Fabrication of Diamond Nanowires for Quantum Information Processing Applications
We present a design and a top-down fabrication method for realizing diamond
nanowires in both bulk single crystal and polycrystalline diamond. Numerical
modeling was used to study coupling between a Nitrogen Vacancy (NV) color
center and optical modes of a nanowire, and to find an optimal range of
nanowire diameters that allows for large collection efficiency of emitted
photons. Inductively coupled plasma (ICP) reactive ion etching (RIE) with
oxygen is used to fabricate the nanowires. Drop-casted nanoparticles (including
, and ) as well as electron
beam lithography defined spin-on glass and evaporated have been
used as an etch mask. We found nanoparticles to be the most
etch resistant. At the same time FOx e-beam resist (spin-on glass) proved to be
a suitable etch mask for fabrication of ordered arrays of diamond nanowires. We
were able to obtain nanowires with near vertical sidewalls in both
polycrystalline and single crystal diamond. The heights and diameters of the
polycrystalline nanowires presented in this paper are \unit[\approx1]{\mu m}
and \unit[120-340]{nm}, respectively, having a \unit[200]{nm/min} etch
rate. In the case of single crystal diamond (types Ib and IIa) nanowires the
height and diameter for different diamonds and masks shown in this paper were
\unit[1-2.4]{\mu m} and \unit[120-490]{nm} with etch rates between
\unit[190-240]{nm/min}.Comment: 11 pages, 26 figures, submitted to Diamond and related Materials;
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWV-4Y7MM1M-1&_user=10&_coverDate=01%2F25%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=6dc58b30f4773a710c667306fc541cc
Integrated Diamond Networks for Quantum Nanophotonics
We demonstrate an integrated nanophotonic network in
diamond, consisting
of a ring resonator coupled to an optical waveguide with grating in-
and outcouplers. Using a nitrogen-vacancy color center embedded inside
the ring resonator as a source of photons, single photon generation
and routing at room temperature is observed. Furthermore, we observe
a large overall photon extraction efficiency (10%) and high quality
factors of ring resonators (3200 for waveguide-coupled system and
12 600 for a bare ring)
Integrated diamond networks for quantum nanophotonics
Diamond is a unique material with exceptional physical and chemical
properties that offers potential for the realization of high-performance
devices with novel functionalities. For example diamond's high refractive
index, transparency over wide wavelength range, and large Raman gain are of
interest for the implementation of novel photonic devices. Recently, atom-like
impurities in diamond emerged as an exceptional system for quantum information
processing, quantum sensing and quantum networks. For these and other
applications, it is essential to develop an integrated nanophotonic platform
based on diamond. Here, we report on the realization of such an integrated
diamond photonic platform, diamond on insulator (DOI), consisting of a thin
single crystal diamond film on top of an insulating silicon dioxide/silicon
substrate. Using this approach, we demonstrate diamond ring resonators that
operate in a wide wavelength range, including the visible (630nm) and
near-infrared (1,550nm). Finally, we demonstrate an integrated, on-chip quantum
nanophotonic network, consisting of ring resonators coupled to low loss
waveguides with grating couplers, that enables the generation and efficient
routing of single photons at room temperature.Comment: This paper has been withdrawn to change the outline of the pape