@article{Klein2024,

title = {Designing metasurface optical interfaces for solid-state qubits using many-body adjoint shape optimization},

author = {Amelia R. Klein and Nader Engheta and Lee C. Bassett},

url = {https://opg.optica.org/oe/fulltext.cfm?uri=oe-32-22-38504&id=561330},

doi = {10.1364/OE.522501},

year  = {2024},

date = {2024-10-09},

urldate = {2024-10-09},

journal = {Optics Express},

volume = {32},

issue = {22},

pages = {38504-38515},

abstract = {We present a general strategy for the inverse design of metasurfaces composed of elementary shapes. We use it to design a structure that collects and collimates light from nitrogen-vacancy centers in diamond. Such metasurfaces constitute scalable optical interfaces for solid-state qubits, enabling efficient photon coupling into optical fibers and eliminating free-space collection optics. The many-body shape optimization strategy is a practical alternative to topology optimization that explicitly enforces material and fabrication constraints throughout the optimization, while still achieving high performance. The metasurface is easily adaptable to other solid-state qubits, and the optimization method is broadly applicable to fabrication-constrained photonic design problems.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Huang2019,

title = {Imaging a nitrogen-vacancy center with a diamond immersion metalens},

author = {T -Y Huang and R R Grote and S A Mann and D A Hopper and A L Exarhos and G G Lopez and A R Klein and E C Garnett and L C Bassett},

url = {https://www.nature.com/articles/s41467-019-10238-5

https://medium.com/penn-engineering/penn-engineers-design-nanostructured-diamond-metalens-for-compact-quantum-technologies-271adddf69ba},

year  = {2019},

date = {2019-06-03},

journal = {Nature Communications},

volume = {10},

number = {2392},

abstract = {Quantum emitters such as the diamond nitrogen-vacancy (NV) center are the basis for a wide range of quantum technologies. However, refraction and reflections at material interfaces impede photon collection, and the emitters’ atomic scale necessitates the use of free space optical measurement setups that prevent packaging of quantum devices. To overcome these limitations, we design and fabricate a metasurface composed of nanoscale diamond pillars that acts as an immersion lens to collect and collimate the emission of an individual NV center. The metalens exhibits a numerical aperture greater than 1.0, enabling efficient fiber-coupling of quantum emitters. This flexible design will lead to the miniaturization of quantum devices in a wide range of host materials and the development of metasurfaces that shape single-photon emission for coupling to optical cavities or route photons based on their quantum state.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}