Single-photon experiments at telecommunication wavelengths using nanowire superconducting detectors

Abstract

Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers)Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Zinoni, C., Alloing, B., Li, L., Marsili, F., Fiore, A., Lunghi, L., ... Gol'tsman, G. N. (2007). Single-photon experiments at telecommunication wavelengths using nanowire superconducting detectors. Applied Physics Letters, 91(3), 031106-1/3. [031106]. DOI: 10.1063/1.2752108 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. The authors report fiber-coupled superconducting single-photon detectors with specifications that exceed those of avalanche photodiodes, operating at telecommunication wavelength, in sensitivity, temporal resolution, and repetition frequency. The improved performance is demonstrated by measuring the intensity correlation function g ͑2͒ ͑͒ of single-photon states at 1300 nm produced by single semiconductor quantum dots.

Ultrafast non-local control of spontaneous emission

“…2) were performed by exciting the target cavity with a pulsed laser at 1,064 nm, pulse width of 6 ps and energy of 2 µJ cm −2 per pulse, with the FP cavity heated by a continuous wave (CW) beam at 780 nm. Decay curves at different detunings were measured by time-correlated single-photon counting (TCSPC) using a superconducting single-photon detector by filtering out the cavity peak with a narrow bandpass filter (FWHM = 0.5 nm) 29 . In the ultrafast tuning experiments (Fig.…”

Enhanced spontaneous emission from quantum dots in short photonic crystal waveguides

“…After being collected by the objectives, emitted photons are coupled into single mode optical fibers, dispersed by a f=1m spectrometer and either detected by a charge-coupled device (CCD) camera or by a superconducting single photon detector (SSPD) for time-resolved measurements. 18 We first explore the slow group velocity band by plotting in Fig. 2b two PL spectra which were we have a localization which can be controlled by the PhC WG termination.…”

Low density 1.55 μm InAs/InGaAsP/InP (100) quantum dots enabled by an ultrathin GaAs interlayer

“…The SSPD provides a sensitivity over two orders of magnitude higher than that of commercial InGaAs avalanche photodiodes. 11 The output of the SSPD was amplified and sent to the stop input of a correlation card, whose start input was activated by the laser to determine the PL time decay. Figure 1 shows the AFM images of the 2 ML InAs QDs with 1 ML GaAs interlayer for TBA flow rates of ͑a͒ 0.5 SCCM, ͑b͒ 3 SCCM, and ͑c͒ 5 SCCM.…”