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Engineering a mechanically stable hybrid photonic crystal cavity coupled to color defects in diamond

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2022-04-27
JournalJournal of Optics
AuthorsAyan Majumder, Bikash Dev Choudhury, Kasturi Saha
InstitutionsIndian Institute of Technology Bombay
Citations1

Abstract

Section titled ā€œAbstractā€

Abstract Wavelength scale photonic, high-quality factor ( Q -factor), cavities are crucial for enhancing light-matter interaction. Such on-chip hybrid devices could potentially provide a route towards scalable quantum technologies with color defects in diamond. A variety of designs for photonic crystal cavities have been proposed; however, the challenging and multi-step fabrication processes required for such designs limit the experimentally observed Q -factors in addition to significant radiation loss. One possible way to minimize the radiation loss in a one-dimensional (1D) photonic crystal cavity is by introducing a so-called Gaussian defect region around the cavity. In this work, we propose a versatile approach to design a Gaussian defect region by changing the lattice parameter in a 1D photonic crystal. Further, to circumvent the problem of creating freestanding cavities for achieving high- Q factor in a 1D photonic crystal cavity, we propose a novel hybrid diamond-titanium dioxide (TiO 2 ) based materials for color defects in diamond, in particular the nitrogen-vacancy (NV āˆ’ ) center. Our proposed mechanically stable and high- Q cavity could be crucial for on-chip integration of different nanophotonic components for chip-scale photonic devices. We show via simulations that Q -factor <mml:math xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ overflow=ā€œscrollā€> <mml:mo>&gt;</mml:mo> </mml:math> 10 5 can be achieved with the device.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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  6. 2016 - A quantum phase switch between a single solid-state spin and a photon [Crossref]
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  9. 2016 - Large conditional single-photon cross-phase modulation [Crossref]
  10. 2016 - A photon-photon quantum gate based on a single atom in an optical resonator [Crossref]

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