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Displaying 51 - 75 of 237

Extending single-photon optimized superconducting transition edge sensors beyond the single-photon counting regime

May 6, 2012
Author(s)
Thomas Gerrits, Brice R. Calkins, Nathan A. Tomlin, Adriana E. Lita, Alan L. Migdall, Richard P. Mirin, Sae Woo Nam
We illuminate a photon-number-resolving transition edge sensor with strong pulses of light containing up to 6.7 million photons (0.85 pJ per pulse). These bright pulses heat the sensor far beyond its transition edge into the normal resistance regime. We

Structure Analysis of the 6H - Ba[Ti,Fe 3+ ,Fe 4+ ]O 3 -d^ Solid Solution

February 1, 1998
Author(s)
I E. Grey, C Li, L M. Cranswick, Robert S. Roth, Terrell A. Vanderah
… octahedra. The maximum vacancy concentration occurs at x=0.67, corresponding to a composition of Ba O2 in the h-stacked … square pyramids. Solid solution members with x> 0.67 were unstable relative to other polymorphs. Further …

Delocalized Correlations in Twin Light Beams with Orbital Angular Momentum

August 29, 2008
Author(s)
Alberto M. Marino, Vincent Boyer, Raphael C. Pooser, Paul D. Lett, Kristin Lemons, Kevin Jones
We generate intensity-difference-squeezed Laguerre-Gauss twin beams carrying orbital angular momentum using 4-wave mixing (4WM) in a hot atomic vapor. The conservation of orbital angular momentum in the 4WM process is studied as well as the spatial

HBAR-Based 3.6GHz Oscillator with Low Power Consumption and Low Phase Noise

February 1, 2009
Author(s)
Hongyu Yu, Chuang-yuan Lee, Wei Pang, Hao Zhang, Alan Brannon, John E. Kitching, Eun Sok Kim
… The measured phase noise of the 3.6-GHz oscillator is -67 dBc/Hz at 300 Hz offset and ?102 dBc/Hz at 10 kHz offset. … Allan deviation of the free-running oscillator is 1.5x10 -9 at one second integration time and the power consumption is …

Searching for best Karatsuba recurrences

September 1, 2019
Author(s)
Cagdas Calik, Morris Dworkin, Nathan Dykas, Rene Peralta
Efficient circuits for multiplication of binary polynomials use what are known as Karatsuba recurrences. These methods divide the polynomials of size kn into k pieces of size n. Multiplication is performed by treating the factors as degree-(k-1)

External Magnetic Field Effects on a Distorted Kagome Antiferromagnet

September 2, 2008
Author(s)
J.-H. Kim, Sungdae Ji, S.-H. Lee, B. Lake, Taner N. Yildirim, H. Nojiri, H. Kikuchi, K. Habicht, Yiming Qiu, K. Kiefer
We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field, H, on the weakly coupled distorted kagom¿e system, Cu 2(OD) 3Cl. Our results show that the ordered state below 6.7 K is a canted

Sub-dekahertz spectroscopy of 199 Hg +

September 21, 2001
Author(s)
J. C. Bergquist, R J. Rafac, B. A. Young, James A. Beall, Wayne M. Itano, David J. Wineland
… stability, we probe the 5d 10 6s 2 S = (F=0, m f =0) 5d 9 6s 2 2 d5/2 (F=2, m f =0) electric-quadrupole transition of …
Displaying 51 - 75 of 237
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