Sökning: "single-photon detector"

Visar resultat 11 - 15 av 19 avhandlingar innehållade orden single-photon detector.

1. 11. NbTiN for improved superconducting detectors

   Författare :Julien Zichi; Val Zwiller; Gregory Gol'tsman; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; superconducting nanowire sngle photon detector; SNSPD; niobium titanium nitride; NbTiN; reactive co-sputtering; quantum communications; quantum sensing; Fysik; Physics;

   Sammanfattning : The physics of single photons is fascinating, by manipulating them we can observe and probe quantum effects. Doing so requires the fabrication and utilization of single photon sources, of which many types have been developed including quantum dots, trapped atoms and ions, and color centers. LÄS MER

3. 12. Theory for superconducting few-photon detectors

   Författare :Mattias Jönsson; Jack Lidmar; Mats Wallin; Marcin Swillo; Karl Berggren; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

   Sammanfattning : High-performance photon detectors are essential for fiber communication, which is the foundation of the modern internet. Emerging quantum information technologies, such as quantum key distribution, impose new requirements on the photon detectors used. LÄS MER

4. 13. SPECT Imaging using Pinhole Collimation : System Design and Simulation Studies for Pre-Clinical and Clinical Imaging

   Författare :Mikael Peterson; Lund Medicinsk strålningsfysik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pinhole SPECT tomography; Nuclear medicine imaging; Monte Carlo-based image reconstruction;

   Sammanfattning : The focus of this dissertation is the use of pinhole collimation in Nuclear Medicine. A pinhole is a single aperture in an opaque material that is placed between the detector and source of interest, and photons must pass through the hole to reach the detector. The choices of pinhole parameters, e.g. LÄS MER

5. 14. Creation and Detection of Single Photons

   Författare :Hatim Azzouz; Mohamed Bourennane; Sergey Cherednichenko; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

   Sammanfattning : A growing number of technologies employ quantum properties in order to produce solutions that surpass the performance of conventional devices, or to execute operations that are fundamentally impossible with classical systems alone. In the field of optical quantum information science, photons are utilized to encode, communicate and manipulate information, making them vitally important. LÄS MER

7. 15. Measurement Back-Action and Photon Detection in Microwave Quantum Optics

   Författare :Anton Frisk Kockum; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Parity Measurement; Quantum Measurement; Quantum Optics; Quantum Stochastic Calculus; Circuit QED; Photodetection; Transmon; Dephasing;

   Sammanfattning : In quantum optics, the interaction between atoms and photons is studied. In recent years, microwave quantum optics with superconducting circuits has emerged as an important tool for fundamental quantum optics experiments, and also as a promising way for implementing quantum computation. LÄS MER