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You searched on: Author: zachary levine

Displaying records 11 to 20 of 120 records.
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11. Polarization-Entangled Photon Pairs From Periodically-Poled Crystalline Waveguides Over a Range of Frequencies
Series: Journal of Research (NIST JRES)
Report Number: 118.018
Published: 8/15/2013
Authors: Zachary H Levine, Dylan A. Heberle
Abstract: We propose a method to extend the range of polarization entanglement in periodically poled rubidium- doped potassium titanyl phosphate (Rb:KTP) and titanium in-diffused lithium niobate (Ti:LN) waveguides. By fabricating waveguides at an angle rel ...

12. Standard Reference Materials for Medical CT
Published: 6/27/2013
Authors: Zachary H Levine, Huaiyu H Chen-Mayer, Adam L Pintar, Daniel S Sawyer
Abstract: NIST Standard Reference Materials 2087 and 2088 for medical computed tomography (CT) have become available. The materials allow CT reconstructions to be tied to the International System of Units in length, density, and mass attenuation coefficient.

13. Fast, Optically Controlled Kerr Phase Shifter for Digital Signal Processing
Published: 4/18/2013
Authors: Runbing Li, Lu Deng, Edward W Hagley, Joshua C Bienfang, Zachary H Levine
Abstract: We demonstrate an optically controlled Kerr phase shifter using a room-temperature Rb85 vapor operating in a Raman gain scheme. Phase shifts from zero to 𝜋 relative to an unshifted reference wave are observed, and gated operations are dem ...

14. An algorithm for finding clusters with a known distribution and its application to photon-number resolution using a superconducting transition-edge sensor
Published: 7/20/2012
Authors: Zachary H Levine, Thomas Gerrits, Alan L Migdall, Daniel Victor Samarov, Brice R. Calkins, Adriana E Lita, Sae Woo Nam
Abstract: Improving photon-number resolution of single-photon sensitive detectors is important for many applications, as is extending the range of such detectors. Here we seek improved resolution for a particular Superconducting Transition-Edge Sensor (TES) t ...

15. Uncertainty in RECIST as a measure of volume for lung nodules and liver malignoma
Published: 4/27/2012
Authors: Zachary H Levine, Adam L Pintar, John G Hagedorn, Charles D. Fenimore, Claus P. Heussel
Abstract: The authors investigate the extent to which the RESPONSE Evaluation Criateria in Solid Tumors (RECIST) can predict tumor volumes and changes in volume using clinical data. The data presented are a reanalysis of data acquired in other studies, includ ...

16. How to measure the size of tumors: The RECIST standard vs. volumetrics
Published: 7/11/2011
Author: Zachary H Levine
Abstract: Response Evaluation Criteria for Solid Tumours (RECIST) proposed 1D criteria for determining if 3D tumors are growing malignantly. Here, the error introduced is quantified using physical ellipsoids and fitting to clinical data on liver malignoma.

17. Generating a Frequency-Bin Entangled Comb of Photon Pairs via Four-Wave Mixing in a Silicon-on-Insulator Microring Resonator
Published: 6/15/2011
Authors: Jun Chen, Zachary H Levine, Jingyun Fan, Alan L Migdall
Abstract: We present a quantum theory for generation of frequency-bin entangled comb of photon pairs via four-wave mixing in a Silicon-on-Insulator microring resonator. We also provide design principles of such a microring through extensive numerical simulat ...

18. Tumor volume measurement errors RECIST studied with realistic tumor models
Series: Journal of Research (NIST JRES)
Published: 5/16/2011
Authors: Benjamin R. Galloway, Adele P Peskin, Zachary H Levine
Abstract: RECIST (Response Evaluation Criteria in Solid Tumors) is a linear measure intended to predict tumor volume in medical computed tomography (CT). In this work, using purely geometrical considerations, we estimate how well RECIST can predict the volume ...

19. Tumor Volume Measurement Errors of RECIST Studied With Ellipsoids
Published: 5/5/2011
Authors: Zachary H Levine, Benjamin R. Galloway, Adele P Peskin, C. P. Heussel, Joseph J. Chen
Abstract: RECIST (Response Evaluation Criteria in Solid Tumors) is a linear measure intended to predict tumor volume in medical computed tomography (CT). In this work, using purely geometrical considerations, we establish limits for how well RECIST can ...

20. Silicon-on-Insulator Microresonator-based Source of Frequency-Bin Entangled Comb of Photon Pairs
Published: 5/1/2011
Authors: Jun Chen, Zachary H Levine, Jingyun Fan, Alan L Migdall
Abstract: We present a quantum theory for frequency-bin entangled photon-pair generation via four-wave mixing from a Silicon-on-Insulator microresonator. We also provide design principles for such a microresonator through extensive numerical simulations.

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