Colored noise in Open Quantum Systems: Noisy frequency estimation and control methods
Dissertation
Autoren
Haase, Jan Friedrich
Gutachter
Huelga, Susana F.Plenio, Martin B.
Paternostro, Mauro
Fakultäten
Fakultät für NaturwissenschaftenInstitutionen
Institut für Theoretische PhysikZusammenfassung
The dynamics of any quantum device is altered by its interaction with the surrounding environment.
This thesis discusses the impact of noise in a scenario of quantum frequency estimation
and techniques to control the dynamics between interacting quantum systems, as well as a
method to tailor memory effects in the dynamics of an experimentally relevant system. In particular, we exploit a quantum metrology setting where N two level systems are employed as probes to estimate the amplitude of a field which alters their level splitting in a linear fashion. There, we explore the fundamental limits of the estimation precision we can achieve using quantum strategies.
Furthermore, we apply newly developed quantum control methods to nitrogen-vacancy centers in diamond. These techniques are focused on the interpretation of frequency spectra, the creation of high fidelity two-qubit gates via specifically designed dynamical decoupling sequences and the control of memory effects in the open quantum system dynamics of the nitrogen-vacancy center.
Erstellung / Fertigstellung
2018
EU-Projekt
BIOQ / Diamond Quantum Devices and Biology / EC / FP7 / 319130
DIADEMS / DIAmond Devices Enabled Metrology and Sensing / EC / FP7 / 611143
EQUAM / Emulators of Quantum Frustrated Magnetism / EC / FP7 / 323714
QUCHIP / Quantum Simulation on a Photonic Chip / EC / H2020 / 641039
DIADEMS / DIAmond Devices Enabled Metrology and Sensing / EC / FP7 / 611143
EQUAM / Emulators of Quantum Frustrated Magnetism / EC / FP7 / 323714
QUCHIP / Quantum Simulation on a Photonic Chip / EC / H2020 / 641039
Normierte Schlagwörter
Quantenmetrologie [GND]Quantum systems [LCSH]
Physical measurements [LCSH]
Schlagwörter
Open quantum systems; Quantum metrology; Quantum Non-Markovianity; Nitrogen vacancy center; Dynamical decoupling; Frequency estimation; Quantum sensingDDC-Sachgruppe
DDC 530 / PhysicsMetadata
Zur LanganzeigeZitiervorlage
Haase, Jan Friedrich (2019): Colored noise in Open Quantum Systems: Noisy frequency estimation and control methods. Open Access Repositorium der Universität Ulm. Dissertation. http://dx.doi.org/10.18725/OPARU-11697
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