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Showing 1 to 12 of 12 for “"pulse timing"”.
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Pulse timing and neutron star structure
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T15:36:50Z No. of bitstreams: 1 1985_nandkumar.pdf: 3440297 bytes, checksum: 2b2f05ec0073943c2c64c3c2f89f1bd3 (MD5)
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Sub-femtosecond precision timing distribution, synchronization and coherent synthesis of ultrafast lasers
… control and distribution of ultrafast optical pulse trains, with respect to pulse timing and phase. First, analytical analysis of the balanced optical cross-correlator (BOC) for attosecond precision pulse timing measurement is presented for both short and long crystal devices. It is found that …
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Nano-optical studies of superconducting nanowire single-photon detectors
… include low dark count rates (Hz) and low timing jitter (sub 100 ps). SNSPDs have been employed in practical photon-counting applications such as quantum key distribution (QKD), operation of quantum waveguide circuits and quantum emitter characterisation. Major challenges in the development …
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Frequency Estimation of Linear FM Scatterometer Pulses Received by the SeaWinds Calibration Ground Station
… include uncertainties in transmitted power, pulse timing, and carrier frequency drift. Identifying these errors prevents their propagation to data products. A key aspect of this analysis involves accurately estimating the parameters of the SeaWinds transmissions. As better parameter estimates …
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Noise and stability of actively modelocked fiber lasers
The timing jitter of a modelocked laser is fundamentally limited by the amplified spontaneous emission in the laser cavity. While one cannot, even in principle, remove this source of noise, one does have control over the pulse timing by using filtering and modulation. In this thesis, we report on …
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Superconducting Nanowire Integrated Circuits for Scalable Cryogenic Memory
… framework. Tradeoffs in bias current levels, pulse timing, and read/write conditions are systematically evaluated through cryogenic measurements, revealing their impact on bit error rate, operational margins, and energy efficiency across single cells and arrays. Together, these contributions …
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Analysis of nonmodal glottal event patterns with application to automatic speaker recognition
… a representation of patterns in the relative timing and height of nonmodal glottal pulses. To extract the timing and height of candidate pulses, we investigate a variety of inverse-filtering schemes including maximum-entropy deconvolution that minimizes predictability of a signal and …
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Exploring Anisotropic Noise and Fast Gates with Superconducting Qubits
… The second protocol---commensurate pulses---uses pulse-timing restrictions to homogenize counter-rotating errors and enable their mitigation with conventional calibration routines. With commensurate pulses, we demonstrate world-class single-qubit gate fidelities reliably exceeding …
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Theoretical and Experimental Investigation of the Nonlinear Dynamical Trends of Passively Mode-Locked Quantum Dot Lasers
… great promise as compact, efficient and reliable pulsed sources of light for a range of precision and high performance applications, such as high bit-rate optical communications, diverse waveform generation, metrology, and clock distribution in high-performance computing (HPC) processors. For such …
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Silicon-Based RFIC Multi-band Transmitter Front Ends for Ultra-Wideband Communications and Sensor Applications
… detail. To generate the required UWB signals, pulse generators are designed and integrated into the transmitter chips. The first prototype UWB transmitter is designed in Freescale Semiconductor 0.18μm SiGe BiCMOS technology for operation over three 500 MHz bands at center frequencies of …
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Investigating exciton correlations using coherent multidimensional optical spectroscopy
… time, and polarization of the femtosecond light pulse(s) in each of those beams; it then recombines all of the beams at the 5 sample to generate the signal field; and finally it measures the signal field, including its phase. Using this instrument, we isolated--with a high degree of …
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Timing Diagnostics and Coherent Harmonics from a test-FEL
… time circularly polarized coherent femtosecond pulses at 66 nm wavelength. A 375 MeV electron bunch was seeded by a femtosecond laser at 263 nm and coherent harmonics were extracted in an APPLE-II type elliptical undulator. A thermionic gun with a barium oxide cathode was adapted for …