Sökning: "POVM"

Hittade 3 avhandlingar innehållade ordet POVM.

1. 1. Photonic multipartite entanglement : Generation, measurement and applications

   Författare :Massimiliano Smania; Mohamed Bourennane; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum information; entanglement; Bell tests; POVM; device-independent; self-testing; quantum optics; prepare-and-measure; fysik; Physics;

   Sammanfattning : We are currently witnessing a fundamental change in the field of quantum information, whereby protocols and experiments previously performed in university labs are now being implemented in real-world scenarios, and a strong commercial push for new and reliable applications is contributing significantly in advancing fundamental research. In this thesis and related included papers, I first look at a keystone of quantum science, Bell's theorem. LÄS MER

3. 2. Studies in the Geometry of Quantum Measurements

   Författare :Irina Dumitru; Ingemar Bengtsson; David Gross; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; quantum measurements; Bell nequalities; Weyl-Heiseberg group; device-independent certification; symmetric informationally-complete POVM; teoretisk fysik; Theoretical Physics;

   Sammanfattning : Quantum information studies quantum systems from the perspective of information theory: how much information can be stored in them, how much the information can be compressed, how it can be transmitted. Symmetric informationally-Complete POVMs are measurements that are well-suited for reading out the information in a system; they can be used to reconstruct the state of a quantum system without ambiguity and with minimum redundancy. LÄS MER

4. 3. Exploring the Elegant Bell Inequality

   Författare :Irina Dumitru; Ingemar Bengtsson; Marcin Pawłowski; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bell inequality; Symmetric Informationally Complete POVM; Device Independent Certification; teoretisk fysik; Theoretical Physics;

   Sammanfattning : In quantum information, device independent certification is a matter of both practical and fundamental interest. In this thesis, we explore the use of a particular Bell inequality, known as the elegant Bell inequality, in device independent certification. LÄS MER