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Marsili, F.; Bitauld, D.; Divochiy, A.; Gaggero, A.; Leoni, R.; Mattioli, F.; Korneev, A.; Seleznev, V.; Kaurova, N.; Minaeva, O.; Gol’tsman, G.; Lagoudakis, K.G.; Benkahoul, M.; Lévy, F.; Fiore, A. |
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Title |
Superconducting nanowire photon number resolving detector at telecom wavelength |
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Conference Article |
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2008 |
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CLEO/QELS |
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CLEO/QELS |
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Qmj1 (1 to 2) |
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PNR SSPD; SNSPD; Detectors; Infrared; Low light level; Diode lasers; Photons; Scanning electron microscopy; Superconductors; Ti:sapphire lasers |
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We demonstrate a photon-number-resolving (PNR) detector, based on parallel superconducting nanowires, capable of resolving up to 5 photons in the telecommunication wavelength range, with sensitivity and speed far exceeding existing approaches. |
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Optical Society of America |
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978-1-55752-859-9 |
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Marsili:08 |
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1243 |
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Korneev, A.; Divochiy, A.; Tarkhov, M.; Minaeva, O.; Seleznev, V.; Kaurova, N.; Voronov, B.; Okunev, O.; Chulkova, G.; Milostnaya, I.; Smirnov, K.; Gol'tsman, G. |
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Title |
New advanced generation of superconducting NbN-nanowire single-photon detectors capable of photon number resolving |
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Conference Article |
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2008 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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97 |
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012307 (1 to 6) |
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PNR SSPD; SNSPD |
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We present our latest generation of ultrafast superconducting NbN single-photon detectors (SSPD) capable of photon-number resolving (PNR). We have developed, fabricated and tested a multi-sectional design of NbN nanowire structures. The novel SSPD structures consist of several meander sections connected in parallel, each having a resistor connected in series. The novel SSPDs combine 10 μm × 10 μm active areas with a low kinetic inductance and PNR capability. That resulted in a significantly reduced photoresponse pulse duration, allowing for GHz counting rates. The detector's response magnitude is directly proportional to the number of incident photons, which makes this feature easy to use. We present experimental data on the performances of the PNR SSPDs. The PNR SSPDs are perfectly suited for fibreless free-space telecommunications, as well as for ultrafast quantum cryptography and quantum computing. |
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1742-6596 |
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1245 |
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Korneev, A.; Divochiy, A.; Tarkhov, M.; Minaeva, O.; Seleznev, V.; Kaurova, N.; Voronov, B.; Okunev, O.; Chulkova, G.; Milostnaya, I.; Smirnov, K.; Gol’tsman, G. |
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Superconducting NbN-nanowire single-photon detectors capable of photon number resolving |
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Conference Article |
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2008 |
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Supercond. News Forum |
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Supercond. News Forum |
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PNR SSPD, SNSPD |
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We present our latest generation of ultra-fast superconducting NbN single-photon detectors (SSPD) capable of photon-number resolving (PNR). The novel SSPDs combine 10 μm x 10 μm active area with low kinetic inductance and PNR capability. That resulted in significantly reduced photoresponse pulse duration, allowing for GHz counting rates. The detector’s response magnitude is directly proportional to the number of incident photons, which makes this feature easy to use. We present experimental data on the performance of the PNR SSPDs. These detectors are perfectly suited for fibreless free-space telecommunications, as well as for ultra-fast quantum cryptography and quantum computing. |
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Reference No. ST34, paper # 012307, eventually not pulished (skipped) at https://iopscience.iop.org/issue/0953-2048/21/1 |
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RPLAB @ sasha @ korneevsuperconducting |
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1046 |
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Author |
Pernice, W.; Schuck, C.; Minaeva, O.; Li, M.; Goltsman, G. N.; Sergienko, A. V.; Tang, H. X. |
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Title |
High speed and high efficiency travelling wave single-photon detectors embedded in nanophotonic circuits |
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Miscellaneous |
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2012 |
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arXiv |
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arXiv |
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1108.5299 |
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1-23 |
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Keywords |
optical waveguides, waveguide SSPD, guantum photonics, jitter, detection efficiency |
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Ultrafast, high quantum efficiency single photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. High photon detection efficiency is essential for scalable measurement-based quantum computation, quantum key distribution, and loophole-free Bell experiments. However, imperfect modal matching and finite photon absorption rates have usually limited the maximum attainable detection efficiency of single photon detectors. Here we demonstrate a superconducting nanowire detector atop nanophotonic waveguides which allows us to drastically increase the absorption length for incoming photons. When operating the detectors close to the critical current we achieve high on-chip single photon detection efficiency up to 91% at telecom wavelengths, with uncertainty dictated by the variation of the waveguide photon flux. We also observe remarkably low dark count rates without significant compromise of detection efficiency. Furthermore, our detectors are fully embedded in a scalable silicon photonic circuit and provide ultrashort timing jitter of 18ps. Exploiting this high temporal resolution we demonstrate ballistic photon transport in silicon ring resonators. The direct implementation of such a detector with high quantum efficiency, high detection speed and low jitter time on chip overcomes a major barrier in integrated quantum photonics. |
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845 |
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Kitaygorsky, Jennifer; Komissarov, I.; Jukna, A.; Sobolewski, Roman; Minaeva, O.; Kaurova, N.; Korneev, A.; Voronov, B.; Milostnaya, I.; Gol'Tsman, Gregory |
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Nanosecond, transient resistive state in two-dimensional superconducting stripes |
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2006 |
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Proc. APS March Meeting |
Abbreviated Journal |
Proc. APS March Meeting |
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H38.13 |
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NbN stripes |
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We have observed, nanosecond-in-duration, transient voltage pulses, generated across two-dimensional (2-D) NbN stripes (width: 100--500 nm; thickness: 3.5--10 nm) of various lengths (1--500 μm), when the wires were completely isolated from the outside world, biased at currents close to the critical current, and kept at temperatures below the mean-field critical temperature Tco. In 2-D superconducting films, at temperatures below the Kosterlitz-Thouless transition, all vortices are bound and the resistance is zero. However, these vortices can get unbound when a large enough transport current is applied. The latter results in a transient resistive state, which manifests itself as spontaneous, 2.5--8-ns-long voltage pulses with the amplitude corresponding to the unbinding potential of a vortex pair. In our 100-nm-wide stripes, we have also observed the formation of phase slip centers (PSCs) at temperatures close to Tco, and a mixture of PSCs and unbound vortex-antivortex pairs at low temperatures. |
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Baltimore, MD |
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1454 |
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