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Li, T. F.; Pashkin, Yu. A.; Astafiev, O.; Nakamura, Y.; Tsai, J. S.; Im, H. |
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Title |
High-frequency metallic nanomechanical resonators |
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Journal Article |
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2008 |
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Appl. Phys. Lett. |
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Appl. Phys. Lett. |
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92 |
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043112(1)-043112(3) |
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Keywords |
nanomechanical resonator, polycrystalline metal films |
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We developed a technology to fabricate fully metallic doubly clamped beams working as nanomechanical resonators. Measured with a magnetomotive detection scheme, the beams, made of polycrystalline metal films, show as good quality as previously reported ones made of single crystal materials, such as Si, GaAs, AlN, and SiC. Our method is compatible with the conventional fabrication process for nanoscale electronic circuits and thus offers a possibility of easily integrating the beams into superconducting charge and flux qubits and single-electron transistors as well as coupling them to coplanar waveguide resonators. |
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621 |
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Jiang, Leaf A.; Luu, Jane X. |
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Title |
Heterodyne detection with a weak local oscillator |
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2008 |
Publication |
Appl. Opt. |
Abbreviated Journal |
Appl. Opt. |
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47 |
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10 |
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1486-1503 |
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weak local oscillator, weak LO, photon-counting detector, photon-counting mixer, counter detector, counter mixer, PD mixer, PCD mixer |
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Abstract |
eterodyne detection in the limit of weak (a few photons) local oscillator and signal power levels has been largely neglected in the past, as authors almost always assumed that the noise was dominated by the shot noise from a strong local oscillator. We present the theory for heterodyne detection of diffuse and specular targets at arbitrary power levels, including the case where the local oscillator power is only a few photons per coherent integration period. The theory was tested with experimental results, and was found to show good agreement. We show how to interpret the power spectral density of the heterodyne signal and how to determine the optimal number of signal and local oscillator photons per coherent integration. |
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979 |
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Jukna, A.; Kitaygorsky, J.; Pan, D.; Cross, A.; Perlman, A.; Komissarov, I.; Sobolewski, R.; Okunev, O.; Smirnov, K.; Korneev, A.; Chulkova, G.; Milostnaya, I.; Voronov, B.; Gol'tsman, G. |
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Dynamics of hotspot formation in nanostructured superconducting stripes excited with single photons |
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2008 |
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Acta Physica Polonica A |
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Acta Physica Polonica A |
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113 |
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3 |
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955-958 |
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SSPD, SNSPD |
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Dynamics of a resistive hotspot formation by near-infrared-wavelength single photons in nanowire-type superconducting NbN stripes was investigated. Numerical simulations of ultrafast thermalization of photon-excited nonequilibrium quasiparticles, their multiplication and out-diffusion from a site of the photon absorption demonstrate that 1.55 μm wavelength photons create in an ultrathin, two-dimensional superconducting film a resistive hotspot with the diameter which depends on the photon energy, and the nanowire temperature and biasing conditions. Our hotspot model indicates that under the subcritical current bias of the 2D stripe, the electric field penetrates the superconductor at the hotspot boundary, leading to suppression of the stripe superconducting properties and accelerated development of a voltage transient across the stripe. |
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1414 |
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Thijs de Graauw; Nick Whyborn; Frank Helmich; Pieter Dieleman; Peter Roelfsema; Emmanuel Caux; Tom Phillips; Jürgen Stutzki; Douwe Beintema; Arnold Benz; Nicolas Biver; Adwin Boogert; Francois Boulanger; Sergey Cherednichenko; Odile Coeur-Joly; Claudia Comito; Emmanuel Dartois; Albrecht de Jonge; Gert de Lange; Ian Delorme; Anna DiGiorgio; Luc Dubbeldam; Kevin Edwards; Michael Fich; Rolf Güsten; Fabrice Herpin; Netty Honingh; Robert Huisman; Herman Jacobs; Willem Jellema; Jon Kawamura; Do Kester; Teun Klapwijk; Thomas Klein; Jacob Kooi; Jean-Michel Krieg; Carsten Kramer; Bob Kruizenga; Wouter Laauwen; Bengt Larsson; Christian Leinz; Rene Liseau; Steve Lord; Willem Luinge; Anthony Marston; Harald Merkel; Rafael Moreno; Patrick Morris; Anthony Murphy; Albert Naber; Pere Planesas; Jesus Martin-Pintado; Micheal Olberg; Piotr Orleanski; Volker Ossenkopf; John Pearson; Michel Perault; Sabine Phillip; Mirek Rataj; Laurent Ravera; Paolo Saraceno; Rudolf Schieder; Frank Schmuelling; Ryszard Szczerba; Russell Shipman; David Teyssier; Charlotte Vastel; Huib Visser; Klaas Wildeman; Kees Wafelbakker; John Ward; Roonan Higgins; Henri Aarts; Xander Tielens; Peer Zaal |
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The Herschel-heterodyne instrument for the far-infrared (HIFI): instrument and pre-launch testing |
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2008 |
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Proc. SPIE |
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7010 |
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701004 |
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422 |
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Steier, W. H.; Oh, M. C.; Zhang, C.; Zhang, H.; Szep, A.; Fetterman, H. R.; Chang, Y.; Erlig, H.; Tsap, B.; Dalton, L. R. |
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Electro-optic polymers and applications in next generation phase array antennas |
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Miscellaneous |
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2008 |
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IR modulator |
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Presentation. The year of the publication is from the file (pdf) properties. |
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