Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"Single-Photon Detection"”.
-
Microwave engineering in superconducting nanowires for single-photon detection
Detecting light at the single-photon level plays a crucial role in photonic quantum information processing, deep-space optical communication, astronomical observation, and biological and chemical sensing. With their exceptional performance, superconducting nanowire single-photon detectors (SNSPDs) …
-
Single-photon detection of 1.55 [mu]m entangled light and frequency upconversion in periodically poled lithium niobate for quantum communication
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
-
Long-range depth profiling based on time-correlated single-photon counting
Single-photon detection technologies are of high relevance to light detection and ranging (LiDAR) applications for the range resolution and surface profiling of distant target objects. Modern single-photon detectors offer high quantum efficiencies and small timing jitters in the order of tens of …
-
Applications of Quantum Measurement Techniques: Counterfactual Quantum Computation, Spin Hall Effect of Light, and Atomic-Vapor-Based Photon Detectors
Our approach to ultra-high-efficiency photon detection develops and extends a recent novel non-solid-state scheme for photo-detection based on atomic vapors. This approach is in principle capable of resolving the number of photons in a pulse, can be extended to non-destructive detection of photons, …
-
Microwave response of nonlinear oscillations in resistively shunted superconducting nanowires
Many superconducting technologies such as rapid single flux quantum computing (RSFQ) and superconducting quantum interference devices (SQUIDs) rely on the modulation of nonlinear dynamics in Josephson junctions for functionality. More recently, however, superconducting devices have been developed …
-
Single-photon frequency upconversion for long-distance quantum teleportation and communication
Entanglement generation, single-photon detection, and frequency translation that preserves the polarization quantum state of the photons are essential technologies for long distance quantum communication protocols. This thesis investigates the application of polarization entanglement to quantum …
-
Investigation of Thin Film Supercurrent and Photodetection in Wide Niobium Nitride Wires
… the past two decades, superconducting nanowire single photon detectors have become the dominant platform for detection at telecommunication wavelengths. Despite their practical success, the theoretical framework that describes the detection mechanism within the nanowire is continually evolving. …
-
Adaptive gain spatial receiver for wide dynamic range communication links
… power across six orders of magnitude down to single photon detection and data rates up to 1Gb/s are attainable, which will enable future tests in the open ocean.
-
Superconducting nanowire single photon detectors for infrared communications
… optical communications and information, based on single-photon detectors offer the most promising possibility to reach new levels of data rate and communication security. Superconducting nanowire single-photon detectors (SNSPDs) have already been used in the past to demonstrate new protocols of …
-
Ab initio modeling of superconducting nanowire single-photon detectors
Single-photon detectors are widely used in modern communication, sensing, and computing technology. Among these detectors, superconducting nanowire single-photon detectors (SNSPDs) possess the highest detection efficiencies, the shortest timing jitter, and the lowest dark count rates. However, for …
-
Novel optical communications and imaging enabled by CMOS interfaced LED technology
… pixels in an array, the non-linearity issues of single LED elements can be avoided and the device functions as a digital-to-light converter. Pulse amplitude modulation and discrete orthogonal frequency division multiplexing were performed, yielding data rates up to 200 Mb/s, and spectral …
-
Applications of quantum measurement techniques: counterfactual quantum computation, spin hall effect of light, and atomic-vapor-based photon detectors
… Hall effect of light, and ultra-high-efficiency photon detectors based on atomic vapors. Counterfactual computation entails obtaining answers from a quantum computer without actually running it, and is accomplished by preparing the computer as a whole into a superposition of being activated and …
-
Pure sources and efficient detectors for optical quantum information processing
… As inherently mobile quantum particles, photons are likely to play an important role in any mature large-scale quantum information processing system. However, the available methods for producing and detecting complex multi-photon states place practical limits on the feasibility of …
-
RO-Based TDC Design with Configurable Resolution and Power for SPAD-Based TCSPC LiDAR Applications
Single-photon avalanche diodes (SPAD) are used to measure time-of-flight (ToF) using CMOS time-to-digital Converters (TDCs) for compact, low-cost, and highly integrated three-dimensional (3D) sensing. The TDC specifications are critical determinants of the system's range, resolution, and accuracy. …
-
Modeling and engineering impact ionization in avalanche photodiodes for near and mid infrared applications
… Geiger-mode APDs are limited to operate at detection rates of about 20 MHz. In addition, there has been relatively little work on infrared APDs, although there are many applications in remote sensing, medical imaging, and environmental monitoring. In particular, there is no GaAs-based APD …
-
Development of the Visible Light Photon Counter for Applications in Quantum Information Science
<p>The visible light photon counter (VLPC) is a high quantum efficiency (QE), Si-based, single-photon detector with high gain, low-noise multiplication, low timing jitter, and photon number resolution. While the VLPC has high QE in the visible wavelengths, the QE in the ultraviolet and infrared is …
-
Decoding the Little Skate Retina: Structural Variants and Developmental Dynamics
… one type of photoreceptor: a rod cell capable of single photon detection in the dark and bright light detection in bright backgrounds, with each distinct capability achieved after a process of adaptation to the background luminance. The other morphological oddity, which is until this study not …
-
Decoding the Little Skate Retina: Structural Variants and Developmental Dynamics
… one type of photoreceptor: a rod cell capable of single photon detection in the dark and bright light detection in bright backgrounds, with each distinct capability achieved after a process of adaptation to the background luminance. The other morphological oddity, which is until this study not …
-
Magnetic X-ray Reflectivity
… left and right circular polarization. Lock-in detection is used to improve the signal-to-noise ratio at the soft x-ray branch and single photon detection at the hard x-ray branch to measure the magnetic signal. The EPW and the experimental setup was commissioned to demonstrate the feasibility …
-
Sub-nanosecond Cherenkov photon detection for LHCb particle identification in high-occupancy conditions and semiconductor tracking for muon scattering tomography
… In order to mitigate this effect, the use of photon detector hit time information is presented in the context of the Ring-Imaging Cherenkov (RICH) detectors. The application of a time gate in the FPGA of the digital readout board for the Upgrade Ia photon detector, which is being installed for …