Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Faraz Najafi"'
Autor:
Qing-Yuan Zhao, Faraz Najafi, Andrew E. Dane, Adam N. McCaughan, Karl K. Berggren, Francesco Bellei, Kristen A. Sunter
Publikováno v:
Prof. Berggren via Phoebe Ayres
We present an optimized fabrication process for superconducting nanowire single-photon detectors that allowed us to obtain a yield of ~70% for detectors based on 80-nm-wide niobium nitride nanowires. We fabricated detectors that showed 24-ps timing j
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0e6cdbbaffad86baf32b9789ed1caf4
https://doi.org/10.1109/jstqe.2014.2372054
https://doi.org/10.1109/jstqe.2014.2372054
Autor:
Andrew E. Dane, Hyeongrak Choi, Faraz Najafi, Tsung-Ju Lu, Dirk Englund, Di Zhu, Karl K. Berggren, Qing-Yuan Zhao
Publikováno v:
Web of Science
We report successful fabrication of niobium nitride single-photon detectors on aluminum nitride substrates. The fabricated detectors showed saturated detection efficiency at 2.45 K under 1550 nm illumination (indicating near-unity internal quantum ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff26401d8e2c5c3ab3e39860e6ac6f67
https://doi.org/10.1364/cleo_qels.2016.ftu4c.1
https://doi.org/10.1364/cleo_qels.2016.ftu4c.1
Autor:
Karl K. Berggren, Qing-Yuan Zhao, Francesco Marsili, Sae Woo Nam, Faraz Najafi, Matthew D. Shaw, Varun B. Verma
Publikováno v:
Quantum Science and Technology ISBN: 9783319240893
Over the past decade, superconducting nanowire single photon detectors (SNSPDs) have emerged as a key enabling technology for quantum optics and free-space optical communication. We review the operating principle and the latest advances in the perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11c6b07e39fee8aa09394e7dc5d1d566
https://doi.org/10.1007/978-3-319-24091-6_1
https://doi.org/10.1007/978-3-319-24091-6_1
Autor:
Alyssa P. Cartwright, Andrew E. Dane, Qing-Yuan Zhao, Faraz Najafi, Karl K. Berggren, Adam N. McCaughan, Francesco Bellei
Publikováno v:
arXiv
This paper describes the construction of a cryostat and an optical system with a free-space coupling efficiency of 56.5% ± 3.4% to a superconducting nanowire single-photon detector (SNSPD) for infrared quantum communication and spectrum analysis. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d82795265ae3d0555f17391d5ddd4e9
https://orcid.org/0000-0003-2480-767X
https://orcid.org/0000-0003-2480-767X
Autor:
Alessandro Ruggeri, A. Bahgat Shehata, Vikas Anant, Faraz Najafi, Alan J. Weger, Kristen A. Sunter, Karl K. Berggren, Franco Stellari, Peilin Song
Publikováno v:
Optical Sensing, Imaging, and Photon Counting: Nanostructured Devices and Applications.
Today Superconducting Nanowire Single-Photon Detectors (SNSPDs) are commonly used in different photon-starved applications, including testing and diagnostics of VLSI circuits. Detecting very faint signals in the near-infrared wavelength range require
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::341d30fcab156476d9950d972d276c15
https://doi.org/10.1117/12.2188234
https://doi.org/10.1117/12.2188234
Autor:
Ryan P. Murphy, Eric A. Dauler, Matthew E. Grein, Theodore Gudmundsen, Faraz Najafi, Adam N. McCaughan, Francesco Marsili, Karl K. Berggren
Publikováno v:
SPIE Proceedings.
Superconducting circuits comprising SNSPDs placed in parallel—superconducting nanowire avalanche photodetectors, or SNAPs—have previously been demonstrated to improve the output signal-to-noise ratio (SNR) by increasing the critical current. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5387420626627faf754772cd009f353
https://doi.org/10.1117/12.2178322
https://doi.org/10.1117/12.2178322
Autor:
Karl K. Berggren, Francesco Marsili, Theodore Gudmundsen, Faraz Najafi, Eric A. Dauler, Adam N. McCaughan, Matthew E. Grein, Ryan P. Murphy
Publikováno v:
CLEO: 2015.
In this work, we demonstrate saturated photon detection efficiency with narrow NbN nanowires and SNAPs to boost the signal-to-noise ratio, and we demonstrate a stabilizing choke inductance that is part of the optically-active area.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::adc13ec7c5b148d415c238d4c3eb710e
https://doi.org/10.1364/cleo_qels.2015.ff2a.3
https://doi.org/10.1364/cleo_qels.2015.ff2a.3
Autor:
Edward H. Chen, Jake Mower, Andrew E. Dane, Karl K. Berggren, Luozhou Li, Jiabao Zheng, Carl B. Poitras, Nicholas C. Harris, Sara Mouradian, Tim Schrouder, Igal Bayn, Dirk Englund, Faraz Najafi, Michal Lipson, Jordan Goldstein
Publikováno v:
Prof. Berggren via Phoebe Ayres
Scopus-Elsevier
Scopus-Elsevier
Single nitrogen vacancy centers in nanostructured diamond form high quality nodes integrated into low-loss photonic circuitry, enabling on-chip detection and signal manipulation. Pre-selection provides near-unity yield. Long coherence times are demon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::358c350644dbe75cb0169ca378a4b8b1
https://orcid.org/0000-0002-4900-741X
https://orcid.org/0000-0002-4900-741X
Autor:
Jonathan J. Surick, Karl K. Berggren, Chung-Soo Kim, Andrew D. Dane, Estelle Kalfon-Cohen, Yachin Ivry, Maya Barzilay, Faraz Najafi
Publikováno v:
Nanotechnology. 28:435205
Here, we optimized ultrathin films of granular NbN on SiO2 and of amorphous αW5Si3. We showed that hybrid superconducting nanowire single-photon detectors (SNSPDs) made of 2 nm thick αW5Si3 films over 2 nm thick NbN films exhibit advantageous coexi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9348454f96e6a1f903867496bbdd5c74
https://doi.org/10.1088/1361-6528/aa8902
https://doi.org/10.1088/1361-6528/aa8902
Autor:
Francesco Bellei, Adam N. McCaughan, Yachin Ivry, Faraz Najafi, Kristen A. Sunter, Domenico De Fazio, Andrew E. Dane, Qingyuan Zhao, Karl K. Berggren
Publikováno v:
arXiv
Superconducting nanowire avalanche single-photon detectors (SNAPs) with n parallel nanowires are advantageous over single-nanowire detectors because their output signal amplitude scales linearly with n. However, the SNAP architecture has not been via
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e8c2cc0fea03e47e41fca25e4e66b90
https://orcid.org/0000-0003-2480-767X
https://orcid.org/0000-0003-2480-767X