Colored noise in Open Quantum Systems: Noisy frequency estimation and control methods
Dissertation
Authors
Haase, Jan Friedrich
Referee
Huelga, Susana F.Plenio, Martin B.
Paternostro, Mauro
Faculties
Fakultät für NaturwissenschaftenInstitutions
Institut für Theoretische PhysikAbstract
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.
Date created
2018
EU Project
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
Subject Headings
Quantenmetrologie [GND]Quantum systems [LCSH]
Physical measurements [LCSH]
Keywords
Open quantum systems; Quantum metrology; Quantum Non-Markovianity; Nitrogen vacancy center; Dynamical decoupling; Frequency estimation; Quantum sensingDewey Decimal Group
DDC 530 / PhysicsMetadata
Show full item recordCitation example
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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