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Investigation of Quantum States of Light (Generation and Utilization Their Special Properties) in Quantum Information Science and Precision Measurements

Hosseinynejad Khaledy, Fariba Sadat | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49022 (04)
  4. University: Sharif University of Technology
  5. Department: Physics
  6. Advisor(s): Karimipour, Vahid
  7. Abstract:
  8. Quantum entanglement and superposition are wonderful and mysterious phenomena of quantum mechanics. By means of quantum entanglement, two or more systems become partner in state of each other . As a result, measurements on each of these systems affect the status of other systems. Quantum superposition allows a system inhabits several of its possible quantum states simultaneously. These two features are applicable in many technologies in present age. Photons, as an quantum unit of light, are appropriate candidate for utilization these properties. Because they are robust to decoherence and for their preparation exist various methods. Hence, we interested to generation of quantum states of light for utilization these important and useful properties. Introduce maximally entangled quantum NOON states for utilization entanglement in precision measurements. But, entanglement may often be a fragile quality when losses are involved. For this reason introduce multipartite quantum W states, that they are uniform superposition of single photon across multiple modes. Then, investigate application of these states in data storage by quantum memories. In this project we designed optical circuit for generation these states and their results are given in chapter
  9. Keywords:
  10. Quantum Entanglement ; Superposition Principle ; Quantum Memory ; Maximally Entangled NOON States ; Multipartite W States ; Precision Measurments ; Optical Circuits

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