Search Results - (Author, Cooperation:J. M. Martinis)
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1Latest Papers from Table of Contents or Articles in PressT. F. Ronnow ; Z. Wang ; J. Job ; S. Boixo ; S. V. Isakov ; D. Wecker ; J. M. Martinis ; D. A. Lidar ; M. Troyer
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-07-26Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressR. Barends ; J. Kelly ; A. Megrant ; A. Veitia ; D. Sank ; E. Jeffrey ; T. C. White ; J. Mutus ; A. G. Fowler ; B. Campbell ; Y. Chen ; Z. Chen ; B. Chiaro ; A. Dunsworth ; C. Neill ; P. O'Malley ; P. Roushan ; A. Vainsencher ; J. Wenner ; A. N. Korotkov ; A. N. Cleland ; J. M. Martinis
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-04-25Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Latest Papers from Table of Contents or Articles in PressP. Roushan ; C. Neill ; Y. Chen ; M. Kolodrubetz ; C. Quintana ; N. Leung ; M. Fang ; R. Barends ; B. Campbell ; Z. Chen ; B. Chiaro ; A. Dunsworth ; E. Jeffrey ; J. Kelly ; A. Megrant ; J. Mutus ; P. J. O'Malley ; D. Sank ; A. Vainsencher ; J. Wenner ; T. White ; A. Polkovnikov ; A. N. Cleland ; J. M. Martinis
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-11-14Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
4Latest Papers from Table of Contents or Articles in PressM. Mariantoni ; H. Wang ; T. Yamamoto ; M. Neeley ; R. C. Bialczak ; Y. Chen ; M. Lenander ; E. Lucero ; A. D. O'Connell ; D. Sank ; M. Weides ; J. Wenner ; Y. Yin ; J. Zhao ; A. N. Korotkov ; A. N. Cleland ; J. M. Martinis
American Association for the Advancement of Science (AAAS)
Published 2011Staff ViewPublication Date: 2011-09-03Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
5Latest Papers from Table of Contents or Articles in PressJ. Kelly ; R. Barends ; A. G. Fowler ; A. Megrant ; E. Jeffrey ; T. C. White ; D. Sank ; J. Y. Mutus ; B. Campbell ; Y. Chen ; Z. Chen ; B. Chiaro ; A. Dunsworth ; I. C. Hoi ; C. Neill ; P. J. O'Malley ; C. Quintana ; P. Roushan ; A. Vainsencher ; J. Wenner ; A. N. Cleland ; J. M. Martinis
Nature Publishing Group (NPG)
Published 2015Staff ViewPublication Date: 2015-03-06Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
6Latest Papers from Table of Contents or Articles in PressNeill, C., Roushan, P., Kechedzhi, K., Boixo, S., Isakov, S. V., Smelyanskiy, V., Megrant, A., Chiaro, B., Dunsworth, A., Arya, K., Barends, R., Burkett, B., Chen, Y., Chen, Z., Fowler, A., Foxen, B., Giustina, M., Graff, R., Jeffrey, E., Huang, T., Kelly, J., Klimov, P., Lucero, E., Mutus, J., Neeley, M., Quintana, C., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Neven, H., Martinis, J. M.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-04-13Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: PhysicsPublished by: -
7Articles: DFG German National LicensesClarke, R. M. ; Brink, P. L. ; Cabrera, B. ; Colling, P. ; Crisler, M. B. ; Davies, A. K. ; Eichblatt, S. ; Gaitskell, R. J. ; Hellmig, J. ; Martinis, J. M. ; Nam, S. W. ; Saab, T. ; Young, B. A.
Woodbury, NY : American Institute of Physics (AIP)
Published 2000Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We present evidence of an enhanced ballistic phonon component resulting from surface events in a 100 g silicon cryogenic dark matter detector. Surface events, calibrated using a 14C electron source, were found to have faster rise times (∼5 μs) than bulk gamma and neutron events (∼7 μs). Using this effect, we were able to discriminate bulk nuclear recoil events from a surface electron background at better than the 97% level above 25 keV recoil energy. The phonon risetime for bulk gamma events was dependent on the applied voltage, confirming that phonons produced from electron-hole emission are ballistic. © 2000 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesKoch, Roger H. ; Clarke, John ; Goubau, W. M. ; Martinis, J. M. ; Pegrum, C. M. ; Harlingen, D. J.
Springer
Published 1983Staff ViewISSN: 1573-7357Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract We have measured the spectral density of the 1/f voltage noise in current-biased resistively shunted Josephson tunnel junctions and dc SQUIDs. A theory in which fluctuations in the temperature give rise to fluctuations in the critical current and hence in the voltage predicts the magnitude of the noise quite accurately for junctions with areas of about 2 × 104 µm2, but significantly overestimates the noise for junctions with areas of about 6 µm2. DC SQUIDs fabricated from these two types of junctions exhibit substantially more 1/f voltage noise than would be predicted from a model in which the noise arises from critical current fluctuations in the junctions. This result was confirmed by an experiment involving two different bias current and flux modulation schemes, which demonstrated that the predominant 1/f voltage noise arises not from critical current fluctuations, but from some unknown source that can be regarded as an apparent 1/f flux noise. Measurements on five different configurations of dc SQUIDs fabricated with thin-film tunnel junctions and with widely varying areas, inductances, and junction capacitances show that the spectral density of the 1/f equivalent flux noise is roughly constant, within a factor of three of (10−10/f)ϕ 0 2 Hz−1. It is emphasized that 1/f flux noise may not be the predominant source of 1/f noise in SQUIDS fabricated with other technologies.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesBenford, D. J. ; Allen, C. A. ; Chervenak, J. A. ; Freund, M. M. ; Kutyrev, A. S. ; Moseley, S. H. ; Shafer, R. A. ; Staguhn, J. G. ; Grossman, E. N. ; Hilton, G. C. ; Irwin, K. D. ; Martinis, J. M. ; Nam, S. W. ; Reintsema, O. D.
Springer
Published 2000Staff ViewISSN: 1572-9559Keywords: bolometers ; SQUIDS ; multiplexing ; transition edge sensors ; far infrared ; submillimeterSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract Studies of emission in the far-infrared and submillimeter from astrophysical sources require large arrays of detectors containing hundreds to thousands of elements. A multiplexed readout is necessary for practical implementation of such arrays, and can be developed using SQUIDS, such that, e.g., a 32 × 32 array of bolometers can be read out using ≈100 wires rather than the 〉2000 needed with a brute force expansion of existing arrays. These bolometer arrays are made by micromachining techniques, using superconducting transition edge sensors as the thermistors. We describe the development of this multiplexed superconducting bolometer array architecture as a step toward bringing about the first astronomically useful arrays of this design. This technology will be used in the SAFIRE instrument on SOFIA, and is a candidate for a wide variety of other spectroscopic and photometric instruments.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesNewbury, D. E. ; Wollman, D. A. ; Hilton, G. C. ; Irwin, K. D. ; Bergren, N. F. ; Rudman, D. A. ; Martinis, J. M.
Springer
Published 2000Staff ViewISSN: 1588-2780Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyEnergy, Environment Protection, Nuclear Power EngineeringNotes: Abstract A high-resolution energy-dispersive X-ray spectrometer (EDS) based on cryogenic microcalorimeter X-ray detectors has been developed for use in X-ray microanalysis. With an energy resolution of 3 eV at 1.5 keV, count rate of ∼500 s−1, and an effective collection area of ∼5 mm2 (using polycapillary X-ray optics), the microcalorimeter EDS combines many of the favorable qualities of commercially-available wavelength dispersive spectrometers (WDS) and semiconductor EDS. After describing the spectrometer system, we present several applications of microcalorimeter EDS to important microanalysis problems.Type of Medium: Electronic ResourceURL: