Ultrastable frequency reference at 1.56 μm using a CO molecular overtone transition with the noise immune cavity-enhanced optical heterodyne molecular spectroscopy method

Posted by klaurent Stanford

Kavli Affiliate: Robert Byer | First 5 Authors: Shailendar Saraf, Paul Berceau, Alberto Stochino, Robert Byer, John Lipa | Summary: We report on an ultrastable molecular clock based on the interrogation of the 3{nu} rotational-vibrational combination band at 1563nm of carbon monoxide 12C16O. The laser stabilization scheme is based on frequency modulation (FM) saturation spectroscopy […]


Continue.. Ultrastable frequency reference at 1.56 μm using a CO molecular overtone transition with the noise immune cavity-enhanced optical heterodyne molecular spectroscopy method

Closing the proximity gap in a metallic Josephson junction between three superconductors

Posted by klaurent Delft

Kavli Affiliate: Yu V. Nazarov | First 5 Authors: C. Padurariu, T. Jonckheere, J. Rech, R. Mélin, D. Feinberg | Summary: We describe the proximity effect in a short disordered metallic junction between three superconducting leads. Andreev bound states in the multi-terminal junction may cross the Fermi level. We reveal that for a quasi-continuous metallic […]


Continue.. Closing the proximity gap in a metallic Josephson junction between three superconductors

Thermal Maps of Gases in Heterogeneous Reactions

Posted by klaurent Berkeley

Kavli Affiliate: Omar M. Yaghi | First 5 Authors: Nanette N. Jarenwattananon, Stefan Gloeggler, Trenton Otto, Arek Melkonian, William Morris | Summary: Over 85% of all chemical industry products are made using catalysts, with the overwhelming majority of these employing heterogeneous catalysts functioning at the gas-solid interface. Consequently, optimizing catalytic reactor design attracts much effort. […]


Continue.. Thermal Maps of Gases in Heterogeneous Reactions

Dispersion Distance and the Matter Distribution of the Universe in Dispersion Space

Posted by klaurent MIT

Kavli Affiliate: Kiyoshi Wesley Masui | First 5 Authors: Kiyoshi Wesley Masui, Kris Sigurdson, , , | Summary: We propose that "standard pings", brief broadband radio impulses, can be used to study the three-dimensional clustering of matter in the Universe even in the absence of redshift information. The dispersion of radio waves as they travel […]


Continue.. Dispersion Distance and the Matter Distribution of the Universe in Dispersion Space

Percolation lithography: Tuning and freezing disorder in 3D photonic crystals using partial wetting and drying

Posted by klaurent Harvard

Kavli Affiliate: Anna V. Shneidman | First 5 Authors: Ian B. Burgess, Navid Abedzadeh, Theresa M. Kay, Anna V. Shneidman, Derek J. Cranshaw | Summary: Although complex, hierarchical nanoscale geometries with tailored degrees of disorder are commonly found in biological systems, few simple self-assembly routes to fabricating synthetic analogues have been identified. We present two […]


Continue.. Percolation lithography: Tuning and freezing disorder in 3D photonic crystals using partial wetting and drying

Optimizing a Dynamical Decoupling Protocol for Solid-State Electronic Spin Ensembles in Diamond

Posted by klaurent Delft

Kavli Affiliate: Viatcheslav V. Dobrovitski | First 5 Authors: Demitry Farfurnik, Andrey Jarmola, Linh M. Pham, Zhi-Hui Wang, Viatcheslav V. Dobrovitski | Summary: We demonstrate significant improvements of the spin coherence time of a dense ensemble of nitrogen-vacancy (NV) centers in diamond through optimized dynamical decoupling (DD). Cooling the sample down to $77$ K suppresses […]


Continue.. Optimizing a Dynamical Decoupling Protocol for Solid-State Electronic Spin Ensembles in Diamond

Serendipitous discovery of a dying Giant Radio Galaxy associated with NGC 1534, using the Murchison Widefield Array

Posted by klaurent MIT

Kavli Affiliate: Robert Goeke | First 5 Authors: Natasha Hurley-Walker, Melanie Johnston-Hollitt, Ron Ekers, Richard Hunstead, Elaine M. Sadler | Summary: Recent observations with the Murchison Widefield Array at 185~MHz have serendipitously unveiled a heretofore unknown giant and relatively nearby ($z = 0.0178$) radio galaxy associated with NGC,1534. The diffuse emission presented here is the […]


Continue.. Serendipitous discovery of a dying Giant Radio Galaxy associated with NGC 1534, using the Murchison Widefield Array

GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology

Posted by klaurent Stanford

Kavli Affiliate: Philip J. Marshall | First 5 Authors: Rachel Mandelbaum, Barnaby Rowe, Robert Armstrong, Deborah Bard, Emmanuel Bertin | Summary: We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravitational lensing shear distortions from simulated galaxy images. […]


Continue.. GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology

Modeling the Expected Performance of the REgolith X-ray Imaging Spectrometer (REXIS)

Posted by klaurent MIT

Kavli Affiliate: Rebecca A. Masterson | First 5 Authors: Niraj K. Inamdar, Richard P. Binzel, Jae Sub Hong, Branden Allen, Jonathan Grindlay | Summary: OSIRIS-REx is the third spacecraft in the NASA New Frontiers Program and is planned for launch in 2016. OSIRIS-REx will orbit the near-Earth asteroid (101955) Bennu, characterize it, and return a […]


Continue.. Modeling the Expected Performance of the REgolith X-ray Imaging Spectrometer (REXIS)