1 Quantum Interference and Entanglement Lab 2 Acknowledgements 3 Apparatus 3.1 Blue Laser Beam Path 3.2 Downconverted Photon Beam Path 3.3 Single Photon Detectors and Coincidence Detection 4 Equipment Notes 4.1 Single Photon Detectors 5 Using the LabVIEW Program 6 Viewing/Loading a Program on the DE2-115 7 Procedure for Bell's Inequality 7.1 A Quicker Estimate of S 8 Optimizing the Bell state 9...

Preprint submitted to Elsevier Science 17 December 2004 We have measured the cosmic ray spectrum at energies above 1017 eV using the two air fluorescence detectors of the High Resolution Fly’s Eye experiment operating in monocular mode. We describe the detector, PMT and atmospheric calibrations, and the analysis techniques for the two detectors. We fit the spectrum to models describing galactic...

We have described an approach for miniaturizing spectroscopic devices by using the advantages presented by elastomeric based microfluidics and semiconductor detectors/emitters. Elastomers allow for both absorption and fluorescent spectroscopy in the visible range to be conducted on small volumes of solution and allow for easy integration with existing detectors such as CMOS imagers, CCD imagers...

Large NaI detectors are commonly used in gamma measurement systems where nuclide identification and quantification is desired. These systems are used to measure people, soil, drums, boxes, animals, and other things. For quantification, an efficiency calibration must be performed, which becomes increasingly difficult as the sources become large and complicated. Mathematical techniques can be qui...

RICH detectors have become extraordinarily useful. Results include measurement of solar neutrino rates, evidence for neutrino oscillations, measurement of TeV γ-rays from gravitational sources, properties of QCD, charm production and decay, and measurement of the CKM matrix elements Vcs, Vcb and Vub. A new value |Vub/Vcb| = 0.087 ± 0.012 is determined. . . . . . . . . . . . . . . . . . . . . . ...

In searching for and interpreting signals from binary mergers, gravitational wave detectors need information about the features of gravitational wave bursts generated by these strong field events. Numerical relativity will ultimately provide the answers, but not on the time scale needed by the first detectors. We propose here a method in which exact numerical solutions to Einstein’s equations, ...

The standard coded aperture imaging approach assumes: • sources at infinity; • isolated point sources in specific directions; • masks with flat power spectrum (except for DC); • thin masks free of vignetting; • collimation to block rays from " out of view " directions; • visible sources cast full cycle of mask pattern on detectors; • use of correlation with the mask pattern to generate an image...

High energy photons are a powerful probe for astrophysics and for fundamental physics under extreme conditions. During the recent years, our knowledge of the most violent phenomena in the Universe has impressively progressed thanks to the advent of new detectors for high energy gamma rays. Observation of γ-rays gives an exciting view of the high energy universe thanks to the current (AGILE) and...

We propose a practical scheme to use photons from causally disconnected cosmic sources to set the detectors in an experimental test of Bell's inequality. In current experiments, with settings determined by quantum random number generators, only a small amount of correlation between detector settings and local hidden variables, established less than a millisecond before each experiment, would su...

Abstract We present a scheme for a photon-counting detection system that can be operated at incident photon rates higher than otherwise possible by suppressing the effects of detector deadtime. The method uses an array of N detectors and a 1-by-N optical switch with a control circuit to direct input light to live detectors. Our calculations and models highlight the advantages of the technique. ...