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 315 for “"Single photon"”.
-
Multi-element superconducting nanowire single photon detectors
Single-photon-detector arrays can provide unparalleled performance and detailed information in applications that require precise timing and single photon sensitivity. Such arrays have been demonstrated using a number of single-photon-detector technologies, but the high performance of …
-
Self-organized Quantum Dots for Single Photon Sources
Die effiziente Erzeugung von einzelnen Photonen oder verschränkten Photonenpaaren ist der Schlüssel für neuartige Quantenkryptografie und Quantencomputer. Einzelne Halbleiter Quantenpunkte (QPe) mit ihren einzigartigen elektronischen Eigenschaften, haben bereits bewiesen, dass sie solche Photonen …
-
Timing performance of superconducting nanowire single-photon detectors
Superconducting nanowire single-photon detectors (SNSPDs) are becoming increasingly popular for applications in quantum information and long-distance communication. While the detection efficiency of SNSPDs has significantly improved over time, their timing performance has largely remained …
-
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 …
-
Nano-optical studies of superconducting nanowire single-photon detectors
uperconducting single-photon detectors based on superconducting nanowires offer broadband single-photon sensitivity, from visible to mid-infrared wavelengths. They have attracted particular attention due to their promising performance at telecommunications wavelengths. The additional benefits of …
-
Towards MDI QKD using Quantum Dot Single Photon Sources
… common attacks are detector-based attacks, and photon-number splitting attacks. For my thesis, I designed the first implementation of Measurement-Device-Independent Quantum Key Distribution (MDI QKD) using quantum dot single photon sources. This form of QKD is not only information-theoretic …
-
Strong proton-photon interactions at the single-photon level
Engineering light at the single photon level is a long-standing goal in physics. In this thesis, we investigate optical nonlinearities at the single photon level orchestrated by an optical cavity. We demonstrate an all-optical transistor where one stored 'gate' photon controls the propagation of a …
-
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 …
-
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) …
-
Microscopy and Spectroscopy of Materials for Blue Single Photon Sources
… shown much interest in recent years as potential single photon emitters. The InGaN-GaN system in particular offers comparably high temperature emission, polarised emission, and access to the green and blue regions. This has the advantages of completing the visible spectrum, and being the region in …
-
Superconducting nanowire single-photon detectors and sub-10-nm lithography
Superconducting nanowire single-photon detectors (SNSPDs) are useful in applications such as free-space optical communications to achieve high-speed data transfer across vast distances with minimum transmission power. In this and other applications, SNSPDs with high detection efficiencies are …
-
Color centers in diamond from single-photon emission to sensing applications
L'abstract è presente nell'allegato / the abstract is in the attachment
-
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 …
-
Single photon emission computed tomography: performance assessment, development and clinical applications
This is a general investigation of the SPECT imaging process. The primary aim is to determine the manner in which the SPECT studies should be performed in order to maximise the relevant clinical information given the characteristics and limitations of the particular gamma camera imaging system …
-
Optical quantum random number generation: applications of single-photon event timing
… the theory, design, and characterization of two photon-arrival-time quantum random number generators (QRNGs). After the QRNGs were completed, it was realized that their performance was severely limited both by the maximum detection rate of the single-photon detectors used, and the precision at …
-
Real-Time Non-Line-of-Sight Imaging Using Single-Photon LiDAR
… A promising approach to NLOS sensing is through single-photon LiDAR, which is commonly used for range-finding in many imaging systems. In addition to range-finding, single-photon LiDAR systems can provide a deeply rich data source in the form of photon count histograms after reflecting off scene …
Page 1 of 16