Zobrazeno 1 - 10
of 198
pro vyhledávání: '"Verma, Varun B."'
Autor:
Slussarenko, Sergei, Weston, Morgan M., Shalm, Lynden K., Verma, Varun B., Nam, Sae-Woo, Kocsis, Sacha, Ralph, Timothy C., Pryde, Geoff J.
Publikováno v:
Nature Communications 13, 1832 (2022)
Long-distance optical quantum channels are necessarily lossy, leading to errors in transmitted quantum information, entanglement degradation and, ultimately, poor protocol performance. Quantum states carrying information in the channel can be probabi
Externí odkaz:
http://arxiv.org/abs/2406.04661
Autor:
White, Simon J. U., Polino, Emanuele, Ghafari, Farzad, Joch, Dominick J., Villegas-Aguilar, Luis, Shalm, Lynden K., Verma, Varun B., Huber, Marcus, Tischler, Nora
Quantum states encoded in the time-bin degree of freedom of photons represent a fundamental resource for quantum information protocols. Traditional methods for generating and measuring time-bin encoded quantum states face severe challenges due to opt
Externí odkaz:
http://arxiv.org/abs/2404.16106
Publikováno v:
Appl. Phys. Lett. 124, 042602 (2024)
A large-format mid-infrared single-photon imager with very low dark count rates would enable a broad range of applications in fields like astronomy and chemistry. Superconducting nanowire single-photon detectors (SNSPDs) are a mature photon-counting
Externí odkaz:
http://arxiv.org/abs/2309.16890
Autor:
Luskin, Jamie S., Schmidt, Ekkehart, Korzh, Boris, Beyer, Andrew D., Bumble, Bruce, Allmaras, Jason P., Walter, Alexander B., Wollman, Emma E., Narváez, Lautaro, Verma, Varun B., Nam, Sae Woo, Charaev, Ilya, Colangelo, Marco, Berggren, Karl K., Peña, Cristián, Spiropulu, Maria, Garcia-Sciveres, Maurice, Derenzo, Stephen, Shaw, Matthew D.
Superconducting nanowire single photon detectors (SNSPDs) are the highest-performing technology for time-resolved single-photon counting from the UV to the near-infrared. The recent discovery of single-photon sensitivity in micrometer-scale supercond
Externí odkaz:
http://arxiv.org/abs/2303.10739
Autor:
Hampel, Benedikt, Slichter, Daniel H., Leibfried, Dietrich, Mirin, Richard P., Nam, Sae Woo, Verma, Varun B.
Publikováno v:
Appl. Phys. Lett. 122, 174001 (2023)
State readout of trapped-ion qubits with trap-integrated detectors can address important challenges for scalable quantum computing, but the strong rf electric fields used for trapping can impact detector performance. Here, we report on NbTiN supercon
Externí odkaz:
http://arxiv.org/abs/2302.01462
Publikováno v:
APL Photonics 7, 051302 (2022)
Single-photon detection via absorption in current-biased nanoscale superconducting structures has become a preferred technology in quantum optics and related fields. Single-mode fiber packaged devices have seen new records set in detection efficiency
Externí odkaz:
http://arxiv.org/abs/2202.05942
Autor:
Protte, Maximilian, Verma, Varun B., Höpker, Jan Philipp, Mirin, Richard P., Nam, Sae Woo, Bartley, Tim J.
We demonstrate the fabrication of micron-wide tungsten silicide superconducting nanowire single-photon detectors on a silicon substrate using laser lithography. We show saturated internal detection efficiencies with wire widths from 0.59$\mu$m to 1.4
Externí odkaz:
http://arxiv.org/abs/2112.07976
Autor:
Zhang, Xiaofu, Lita, Adriana E., Liu, Huanlong, Verma, Varun B., Zhou, Qiang, Nam, Sae Woo, Schilling, Andreas
The nature of the magnetic-field driven superconductor-to-insulator quantum-phase transition in two-dimensional systems at zero temperature has been under debate since the 1980s, and became even more controversial after the observation of a quantum-G
Externí odkaz:
http://arxiv.org/abs/2105.06133
Autor:
Höpker, Jan Philipp, Verma, Varun B., Protte, Maximilian, Ricken, Raimund, Quiring, Viktor, Eigner, Christof, Ebers, Lena, Hammer, Manfred, Foerstner, Jens, Silberhorn, Christine, Mirin, Richard P., Nam, Sae Woo, Bartley, Tim J.
Publikováno v:
J. Phys. Photonics 3 034022 (2021)
We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently-coupled photons of 1550nm waveleng
Externí odkaz:
http://arxiv.org/abs/2104.12500
Autor:
Slussarenko, Sergei, Joch, Dominick J., Tischler, Nora, Ghafari, Farzad, Shalm, Lynden K., Verma, Varun B., Nam, Sae Woo, Pryde, Geoff J.
Publikováno v:
NPJ Quantum Inf. 8, 20 (2022)
Violating a nonlocality inequality enables the most powerful remote quantum information tasks and fundamental tests of quantum physics. Loophole-free photonic verification of nonlocality has been achieved with polarization-entangled photon pairs, but
Externí odkaz:
http://arxiv.org/abs/2009.03918