TY - GEN
T1 - Metasurface-enabled single-photon generation
AU - Komisar, Danylo
PY - 2023/6/20
Y1 - 2023/6/20
N2 - The central building block of the rapidly developing field of quantum information
technologies is a single-photon source. The quantum efficiency of the source,
spectrum, and polarization of emitted photons are critical factors for progress
of quantum communication and cryptography fields, as well as sensing and
metrology.The experimental studies outlined in this dissertation focus on achieving control over the polarization and directionality of single-photon emission by coupling
quantum emitters to plasmonic metasurfaces. A comprehensive theoretical analysis is provided to describe the metasurface design and optimization, which
builds up a framework for designing a single-photon source with any desired
functionality.First, a collimated radially polarized single-photon beam is demonstrated by
coupling a nitrogen-vacancy nanodiamond to a plasmonic bullseye antenna. On-chip 15 µm size antenna was fabricated around a nanodiamond using electron
beam lithography. The single-photon emission was validated using second-order
correlation function measurements. A subsequent theoretical investigation of
the antenna design provides a set of rules that can be utilized for metasurface
optimization. Second, multichannel single-photon generation is discussed, which
shows independent control over the direction and polarization state of each channel. The plasmonic metasurface implemented in this study was designed using
a novel scattering holography approach. Furthermore, the channeling of single-photon emission into two beams of orthogonal polarizations was experimentally
demonstrated by coupling a germanium vacancy center to holographic metasurface. The repeatability of the experiment was confirmed by coupling metasurfaces
with multiphoton silicon vacancy nanodiamonds. Experimental verification of a
metasurface designed as a hologram pattern calculated with a surface plasmon
polariton as a reference wave paves the way for designing metasurfaces that can
generate any predefined emission intensity and polarization distribution in the
far-field. Furthermore, the applicability of this method extends to a broad array of
quantum emitters, establishing a new framework for single-photon source design.
AB - The central building block of the rapidly developing field of quantum information
technologies is a single-photon source. The quantum efficiency of the source,
spectrum, and polarization of emitted photons are critical factors for progress
of quantum communication and cryptography fields, as well as sensing and
metrology.The experimental studies outlined in this dissertation focus on achieving control over the polarization and directionality of single-photon emission by coupling
quantum emitters to plasmonic metasurfaces. A comprehensive theoretical analysis is provided to describe the metasurface design and optimization, which
builds up a framework for designing a single-photon source with any desired
functionality.First, a collimated radially polarized single-photon beam is demonstrated by
coupling a nitrogen-vacancy nanodiamond to a plasmonic bullseye antenna. On-chip 15 µm size antenna was fabricated around a nanodiamond using electron
beam lithography. The single-photon emission was validated using second-order
correlation function measurements. A subsequent theoretical investigation of
the antenna design provides a set of rules that can be utilized for metasurface
optimization. Second, multichannel single-photon generation is discussed, which
shows independent control over the direction and polarization state of each channel. The plasmonic metasurface implemented in this study was designed using
a novel scattering holography approach. Furthermore, the channeling of single-photon emission into two beams of orthogonal polarizations was experimentally
demonstrated by coupling a germanium vacancy center to holographic metasurface. The repeatability of the experiment was confirmed by coupling metasurfaces
with multiphoton silicon vacancy nanodiamonds. Experimental verification of a
metasurface designed as a hologram pattern calculated with a surface plasmon
polariton as a reference wave paves the way for designing metasurfaces that can
generate any predefined emission intensity and polarization distribution in the
far-field. Furthermore, the applicability of this method extends to a broad array of
quantum emitters, establishing a new framework for single-photon source design.
M3 - Ph.D. thesis
PB - Syddansk Universitet. Det Tekniske Fakultet
ER -