Quantum state tomography of 1D resonance fluorescence

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dc.contributor.authorStrandberg, Ingrid
dc.contributor.departmentChalmers tekniska högskola / Institutionen för mikroteknologi och nanovetenskapsv
dc.contributor.departmentChalmers University of Technology / Department of Microtechnology and Nanoscienceen
dc.date.accessioned2019-07-03T14:38:58Z
dc.date.available2019-07-03T14:38:58Z
dc.date.issued2017
dc.description.abstractTomography is the name under which all state reconstruction techniques are denoted, one of the most recognized examples being medical tomography. Quantum state tomography is a procedure to determine the quantum state of a physical system. By performing homodyne measurements on resonance fluorescence from an artificial atom coupled to a one-dimensional transmission line, its quantum state can be reconstructed. Resonance fluorescence is one of the simplest setups that results in non-classical states of light. If these states are non-classical in the sense that they have a negative Wigner function, they can be used as a computational resource for quantum computing. There are many different approaches to quantum computing. Some, like gate based quantum computing using discrete variables like qubits, have been extensively researched, both theoretically and experimentally. There exists and alternative approach: continuous variable quantum computing. The continuous variables we will be concerned with are the components of the electromagnetic field that constitute the resonance fluorescence. There are different parameters that affect the nature of the resonance fluorescence, for example, the number of transmission lines the atom is coupled to, or the strength of the driving field. In this work, we develop the tools necessary to numerically simulate homodyne detection of resonance fluorescence for different sets of parameters, and reconstruct the quantum state as well as calculating the Wigner negativity.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/252882
dc.language.isoeng
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectAtom- och molekylfysik och optik
dc.subjectNanoteknik
dc.subjectFysik
dc.subjectNanovetenskap och nanoteknik
dc.subjectAtom and Molecular Physics and Optics
dc.subjectNano Technology
dc.subjectPhysical Sciences
dc.subjectNanoscience & Nanotechnology
dc.titleQuantum state tomography of 1D resonance fluorescence
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmePhysics and astronomy (MPPAS), MSc
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