| Records |
| Author |
Kitaeva, G. K.; Kornienko, V. V.; Kuznetsov, K. A.; Pentin, I. V.; Smirnov, K. V.; Vakhtomin, Y. B. |
| Title |
Direct detection of the idler THz radiation generated by spontaneous parametric down-conversion |
Type |
Journal Article |
| Year |
2019 |
Publication |
Opt. Lett. |
Abbreviated Journal  |
Opt. Lett. |
| Volume |
44 |
Issue |
5 |
Pages |
1198-1201 |
| Keywords |
HEB applications |
| Abstract |
We study parametric down-conversion (PDC) of optical laser radiation in the strongly frequency non-degenerate regime which is promising for the generation of quantum-correlated pairs of extremely different spectral ranges, the optical and the terahertz (THz) ones. The possibility to detect tenuous THz-frequency photon fluxes generated under low-gain spontaneous PDC is demonstrated using a hot electron bolometer. Then experimental dependences of the THz radiation power on the detection angle and on the pump intensity are analyzed. |
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| ISSN |
0146-9592 |
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PMID:30821747 |
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no |
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1801 |
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| Author |
Elezov, M.; Ozhegov, R.; Goltsman, G.; Makarov, V. |
| Title |
Countermeasure against bright-light attack on superconducting nanowire single-photon detector in quantum key distribution |
Type |
Journal Article |
| Year |
2019 |
Publication |
Opt. Express |
Abbreviated Journal |
Opt. Express |
| Volume |
27 |
Issue |
21 |
Pages |
30979-30988 |
| Keywords |
SSPD, SNSPD |
| Abstract |
We present an active anti-latching system for superconducting nanowire single-photon detectors. We experimentally test it against a bright-light attack, previously used to compromise security of quantum key distribution. Although our system detects continuous blinding, the detector is shown to be partially blindable and controllable by specially tailored sequences of bright pulses. Improvements to the countermeasure are suggested. |
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English |
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| ISSN |
1094-4087 |
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PMID:31684339 |
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no |
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Serial |
1275 |
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| Author |
Chandrasekar, R.; Lapin, Z. J.; Nichols, A. S.; Braun, R. M.; Fountain, A. W. |
| Title |
Photonic integrated circuits for Department of Defense-relevant chemical and biological sensing applications: state-of-the-art and future outlooks |
Type |
Conference Article |
| Year |
2019 |
Publication |
Opt. Eng. |
Abbreviated Journal |
Opt. Eng. |
| Volume |
58 |
Issue |
02 |
Pages |
1 |
| Keywords |
photonic integrated circuits, PIC, optical waveguides, defense applications |
| Abstract |
Photonic integrated circuits (PICs), the optical counterpart of traditional electronic integrated circuits, are paving the way toward truly portable and highly accurate biochemical sensors for Department of Defense (DoD)-relevant applications. We introduce the fundamentals of PIC-based biochemical sensing and describe common PIC sensor architectures developed to-date for single-identification and spectroscopic sensor classes. We discuss DoD investments in PIC research and summarize current challenges. We also provide future research directions likely required to realize widespread application of PIC-based biochemical sensors. These research directions include materials research to optimize sensor components for multiplexed sensing; engineering improvements to enhance the practicality of PIC-based devices for field use; and the use of synthetic biology techniques to design new selective receptors for chemical and biological agents. |
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| ISSN |
0091-3286 |
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no |
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1346 |
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Komrakova, S.; Javadzade, J.; Vorobyov, V.; Bolshedvorskii, S.; Soshenko, V.; Akimov, A.; Kovalyuk, V.; Korneev, A.; Goltsman, G. |
| Title |
CMOS compatible nanoantenna-nanodiamond integration |
Type |
Conference Article |
| Year |
2019 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
| Volume |
1410 |
Issue |
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Pages |
012180 |
| Keywords |
bull-eye antenna, hyperbolic metamaterials, NV-centers |
| Abstract |
Here we demonstrate CMOS compatible method to deterministically produce nanoantenna with nanodiamonds systems on example of bull-eye antenna on top of on hyperbolic metamaterials. We study the statistics of the placement of nanodiamonds and measure the fluorescence lifetime and the second-order correlation function of NV-centers inside nanodiamonds. |
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| ISSN |
1742-6588 |
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no |
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Serial |
1182 |
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Zubkova, E.; Golikov, A.; An, P.; Kovalyuk, V.; Korneev, A.; Ferrari, S.; Pernice, W.; Goltsman, G. |
| Title |
CWDM demultiplexer using anti-reflection, contra-directional couplers based on silicon nitride rib waveguide |
Type |
Conference Article |
| Year |
2019 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
| Volume |
1410 |
Issue |
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Pages |
012179 |
| Keywords |
coarse wavelength-division multiplexing, Si3N4 rib waveguide |
| Abstract |
We report on the development and fabrication of a 9-channel coarse wavelength-division multiplexing for telecommunication wavelengths (1550 nm) using anti-reflection contra-directional couplers, based on silicon nitride (Si3N4) rib waveguide. The transmitted and reflected spectrum in each channel of the demultiplexer were measured. The average full width at half maximum of the transmitted (reflected) spectra is about 3 nm. |
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1742-6588 |
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no |
| Call Number |
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Serial |
1183 |
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