Extremely confined gap-plasmon waveguide modes excited by nitrogen-vacancy centers in diamonds

Shailesh Kumar*, Sebastian K.H. Andersen, Sergey I. Bozhevolnyi

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Resumé

Quantum emitters with high emission rates and efficiently coupled to optical waveguides are in demand for various applications in quantum information technologies. Accurate positioning of a quantum emitter within a strongly confined gap-plasmon waveguide (GPW) mode would allow one to significantly enhance the decay rate and efficiency of channeling of emitted photons into the waveguide mode. Here, we present experimental results on the GPW mode excitation in a gap between a monocrystalline silver nanowire and a monocrystalline silver flake by using a single nitrogen-vacancy center in a nanodiamond. The coupled systems containing a nanodiamond and the structure supporting the GPW mode are created by a combination of electron beam lithography and nanomanipulation with an atomic force microscope (AFM). In these systems, we find decay rate enhancements of up to ∼50 and the efficiency of channeling of photons into the GPW mode of up to 82%, resulting in an exceptionally high figure-of-merit of 212 for the emitter-plasmonic waveguide coupled system. The results obtained suggest new avenues for practical realization of integrated solid-state quantum systems.

OriginalsprogEngelsk
TidsskriftACS Photonics
Vol/bind6
Udgave nummer1
Sider (fra-til)23-29
ISSN2330-4022
DOI
StatusUdgivet - 16. jan. 2019

Fingeraftryk

Diamond
Photons
Silver
Vacancies
Diamonds
Waveguides
Nitrogen
diamonds
Nanowires
waveguides
nitrogen
Nanodiamonds
emitters
Electrons
decay rates
silver
Electron beam lithography
flakes
photons
Optical waveguides

Citer dette

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title = "Extremely confined gap-plasmon waveguide modes excited by nitrogen-vacancy centers in diamonds",
abstract = "Quantum emitters with high emission rates and efficiently coupled to optical waveguides are in demand for various applications in quantum information technologies. Accurate positioning of a quantum emitter within a strongly confined gap-plasmon waveguide (GPW) mode would allow one to significantly enhance the decay rate and efficiency of channeling of emitted photons into the waveguide mode. Here, we present experimental results on the GPW mode excitation in a gap between a monocrystalline silver nanowire and a monocrystalline silver flake by using a single nitrogen-vacancy center in a nanodiamond. The coupled systems containing a nanodiamond and the structure supporting the GPW mode are created by a combination of electron beam lithography and nanomanipulation with an atomic force microscope (AFM). In these systems, we find decay rate enhancements of up to ∼50 and the efficiency of channeling of photons into the GPW mode of up to 82{\%}, resulting in an exceptionally high figure-of-merit of 212 for the emitter-plasmonic waveguide coupled system. The results obtained suggest new avenues for practical realization of integrated solid-state quantum systems.",
keywords = "gap-plasmon waveguide, nitrogen-vacancy center, quantum optics, quantum plasmonics, silver flake, silver nanowire",
author = "Shailesh Kumar and Andersen, {Sebastian K.H.} and Bozhevolnyi, {Sergey I.}",
year = "2019",
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Extremely confined gap-plasmon waveguide modes excited by nitrogen-vacancy centers in diamonds. / Kumar, Shailesh; Andersen, Sebastian K.H.; Bozhevolnyi, Sergey I.

I: ACS Photonics, Bind 6, Nr. 1, 16.01.2019, s. 23-29.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Extremely confined gap-plasmon waveguide modes excited by nitrogen-vacancy centers in diamonds

AU - Kumar, Shailesh

AU - Andersen, Sebastian K.H.

AU - Bozhevolnyi, Sergey I.

PY - 2019/1/16

Y1 - 2019/1/16

N2 - Quantum emitters with high emission rates and efficiently coupled to optical waveguides are in demand for various applications in quantum information technologies. Accurate positioning of a quantum emitter within a strongly confined gap-plasmon waveguide (GPW) mode would allow one to significantly enhance the decay rate and efficiency of channeling of emitted photons into the waveguide mode. Here, we present experimental results on the GPW mode excitation in a gap between a monocrystalline silver nanowire and a monocrystalline silver flake by using a single nitrogen-vacancy center in a nanodiamond. The coupled systems containing a nanodiamond and the structure supporting the GPW mode are created by a combination of electron beam lithography and nanomanipulation with an atomic force microscope (AFM). In these systems, we find decay rate enhancements of up to ∼50 and the efficiency of channeling of photons into the GPW mode of up to 82%, resulting in an exceptionally high figure-of-merit of 212 for the emitter-plasmonic waveguide coupled system. The results obtained suggest new avenues for practical realization of integrated solid-state quantum systems.

AB - Quantum emitters with high emission rates and efficiently coupled to optical waveguides are in demand for various applications in quantum information technologies. Accurate positioning of a quantum emitter within a strongly confined gap-plasmon waveguide (GPW) mode would allow one to significantly enhance the decay rate and efficiency of channeling of emitted photons into the waveguide mode. Here, we present experimental results on the GPW mode excitation in a gap between a monocrystalline silver nanowire and a monocrystalline silver flake by using a single nitrogen-vacancy center in a nanodiamond. The coupled systems containing a nanodiamond and the structure supporting the GPW mode are created by a combination of electron beam lithography and nanomanipulation with an atomic force microscope (AFM). In these systems, we find decay rate enhancements of up to ∼50 and the efficiency of channeling of photons into the GPW mode of up to 82%, resulting in an exceptionally high figure-of-merit of 212 for the emitter-plasmonic waveguide coupled system. The results obtained suggest new avenues for practical realization of integrated solid-state quantum systems.

KW - gap-plasmon waveguide

KW - nitrogen-vacancy center

KW - quantum optics

KW - quantum plasmonics

KW - silver flake

KW - silver nanowire

U2 - 10.1021/acsphotonics.8b01225

DO - 10.1021/acsphotonics.8b01225

M3 - Journal article

VL - 6

SP - 23

EP - 29

JO - A C S Photonics

JF - A C S Photonics

SN - 2330-4022

IS - 1

ER -