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Integration of colloidal PbS/CdS quantum dots with plasmonic antennas and superconducting detectors on a silicon nitride photonic platform

(2019) NANO LETTERS. 19. p.5452-5458
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Abstract
Single-photon sources and detectors are indispensable building blocks for integrated quantum photonics, a research field that is seeing ever increasing interest for numerous applications. In this work, we implemented essential components for a quantum key distribution transceiver on a single photonic chip. Plasmonic antennas on top of silicon nitride waveguides provide Purcell enhancement with a concurrent increase of the count rate, speeding up the microsecond radiative lifetime of IR-emitting colloidal PbS/CdS quantum dots (QDs). The use of low-fluorescence silicon nitride, with a waveguide loss smaller than 1 dB/cm, made it possible to implement high extinction ratio optical filters and low insertion loss spectrometers. Waveguide-coupled superconducting nanowire single-photon detectors allow for low time-jitter single-photon detection. To showcase the performance of the components, we demonstrate on-chip lifetime spectroscopy of PbS/CdS QDs. The method developed in this paper is predicted to scale down to single QDs, and newly developed emitters can be readily integrated on the chip-based platform.
Keywords
Colloidal quantum dots, plasmonic antennas, superconducting nanowire single photon detector, hybrid integrated photonics, OPTICAL-PROPERTIES, KEY DISTRIBUTION, EMISSION, STATE

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MLA
Elsinger, Lukas et al. “Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform.” NANO LETTERS 19 (2019): 5452–5458. Print.
APA
Elsinger, L., Gourgues, R., Zadeh, I. E., Maes, J., Guardiani, A., Bulgarini, G., Pereira, S. F., et al. (2019). Integration of colloidal PbS/CdS quantum dots with plasmonic antennas and superconducting detectors on a silicon nitride photonic platform. NANO LETTERS, 19, 5452–5458.
Chicago author-date
Elsinger, Lukas, Ronan Gourgues, Iman E Zadeh, Jorick Maes, Antonio Guardiani, Gabriele Bulgarini, Silvania F Pereira, et al. 2019. “Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform.” Nano Letters 19: 5452–5458.
Chicago author-date (all authors)
Elsinger, Lukas, Ronan Gourgues, Iman E Zadeh, Jorick Maes, Antonio Guardiani, Gabriele Bulgarini, Silvania F Pereira, Sander N Dorenbos, Val Zwiller, Zeger Hens, and Dries Van Thourhout. 2019. “Integration of Colloidal PbS/CdS Quantum Dots with Plasmonic Antennas and Superconducting Detectors on a Silicon Nitride Photonic Platform.” Nano Letters 19: 5452–5458.
Vancouver
1.
Elsinger L, Gourgues R, Zadeh IE, Maes J, Guardiani A, Bulgarini G, et al. Integration of colloidal PbS/CdS quantum dots with plasmonic antennas and superconducting detectors on a silicon nitride photonic platform. NANO LETTERS. 2019;19:5452–8.
IEEE
[1]
L. Elsinger et al., “Integration of colloidal PbS/CdS quantum dots with plasmonic antennas and superconducting detectors on a silicon nitride photonic platform,” NANO LETTERS, vol. 19, pp. 5452–5458, 2019.
@article{8626325,
  abstract     = {Single-photon sources and detectors are indispensable building blocks for integrated quantum photonics, a research field that is seeing ever increasing interest for numerous applications. In this work, we implemented essential components for a quantum key distribution transceiver on a single photonic chip. Plasmonic antennas on top of silicon nitride waveguides provide Purcell enhancement with a concurrent increase of the count rate, speeding up the microsecond radiative lifetime of IR-emitting colloidal PbS/CdS quantum dots (QDs). The use of low-fluorescence silicon nitride, with a waveguide loss smaller than 1 dB/cm, made it possible to implement high extinction ratio optical filters and low insertion loss spectrometers. Waveguide-coupled superconducting nanowire single-photon detectors allow for low time-jitter single-photon detection. To showcase the performance of the components, we demonstrate on-chip lifetime spectroscopy of PbS/CdS QDs. The method developed in this paper is predicted to scale down to single QDs, and newly developed emitters can be readily integrated on the chip-based platform.},
  author       = {Elsinger, Lukas and Gourgues, Ronan and Zadeh, Iman E and Maes, Jorick and Guardiani, Antonio and Bulgarini, Gabriele and Pereira, Silvania F and Dorenbos, Sander N and Zwiller, Val and Hens, Zeger and Van Thourhout, Dries},
  issn         = {1530-6984},
  journal      = {NANO LETTERS},
  keywords     = {Colloidal quantum dots,plasmonic antennas,superconducting nanowire single photon detector,hybrid integrated photonics,OPTICAL-PROPERTIES,KEY DISTRIBUTION,EMISSION,STATE},
  language     = {eng},
  pages        = {5452--5458},
  title        = {Integration of colloidal PbS/CdS quantum dots with plasmonic antennas and superconducting detectors on a silicon nitride photonic platform},
  url          = {http://dx.doi.org/10.1021/acs.nanolett.9b01948},
  volume       = {19},
  year         = {2019},
}

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