Sökning: "single-photon"
Visar resultat 1 - 5 av 75 uppsatser innehållade ordet single-photon.
1. Generation and detection of entangled single-photon pairs
Kandidat-uppsats, Uppsala universitet/FREIASammanfattning : Quantum information technology is an emerging field with important applications such as quantum cryptography and teleportation, quantum imaging and lithography. These applications make use of single photons and pairs of entangled photons. In this work, we experimentally generate and attempt to detect the entangled photons. LÄS MER
2. Quantum Espionage
Master-uppsats, KTH/Tillämpad fysikSammanfattning : This thesis investigates the security of optical fiber communication and demonstrates the feasibility of eavesdropping using different tapping methods and superconducting nanowire single-photon detectors (SNSPDs). Methods for surveillance against fiber intrusion are also investigated. LÄS MER
3. Beyond Pulse Position Modulation : a Feasibility Study
Master-uppsats, Linköpings universitet/Institutionen för systemteknikSammanfattning : During the thesis work, a feasibility study of the BPPM error-correction protocol is performed. The beyond pulse position modulation (BPPM) protocol was invented at Ericsson AB and describes a modulation encoding using vertically and horizontally polarized single photons for optical transmission and error-correction. LÄS MER
4. Jämförelse av datortomografisk lungangiografi och planar samt tomografisk scintigrafi vid diagnostik av lungemboli hos gravida kvinnor : En litteraturstudie
Kandidat-uppsats, Uppsala universitet/RadiologiSammanfattning : Bakgrund: Lungemboli är en av de vanligaste dödsorsakerna för gravida kvinnor och symtomen är ofta diffusa. Korrekt tillämpad bilddiagnostik är centralt vid lungemboliutredning för att undvika över- och underdiagnostisering, vilka båda kan leda till allvarliga konsekvenser. LÄS MER
5. Experimental Study of Magnetic Field Effects on Hairpin SNSPD Turn Designs for Single Photon Detection : Investigating the Relationship between Magnetic Field Strength and SNSPD Performance
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Superconducting Nanowire Single Photon Detectors (SNSPDs) are a promising technology for detecting single photon emissions with high efficiency and low noise. This detector class has numerous applications in quantum optics, communication, and sensing. LÄS MER