Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Quantum Simulators"”.
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On Quantum Simulators and Adiabatic Quantum Algorithms
This Thesis focuses on different aspects of quantum computation theory: adiabatic quantum algorithms, decoherence during the adiabatic evolution and quantum simulators. After an overview on the area of quantum computation and setting up the formal ground for the rest of the Thesis we derive a …
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Many-body entangled dynamics of closed and open systems for quantum simulators
When D-wave was founded in 1999, quantum computing was still an ambitious vision. In the past five years, quantum computing has moved from this vision to a very reachable goal with major companies such as Google, IBM, Intel, and Microsoft investigating quantum computation investing in this …
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An investigation of precision and scaling issues in nuclear spin and trapped-ion quantum simulators
Quantum simulation offers the possibility of using a controllable quantum-mechanical system to implement the dynamics of another quantum system, performing calculations that are intractable on classical computers for all but the smallest systems. This great possibility carries with it great …
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Dynamical aspects of quantum information and classical simulability
Quantum many-body dynamics describes how systems of interacting particles evolve, often giving rise to collective phenomena with no classical counterpart. Understanding these dynamical phases of matter is believed to be typically hard. To simulate such dynamics, we need to either emulate it on a …
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Quantum simulation of many-body dynamics
Quantum computers and simulators have the potential to improve our understanding of physics, material science, chemistry, and biology by providing a window into the dynamics of quantum many-body systems that appear in these fields. In addition to growing our knowledge of fundamental science, an …
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Quantum Transport Experiments with Ultracold Atoms
Quantum simulation is a burgeoning field of research, in which quantum systems are engineered to behave similarly to external, complex systems of interest. These quantum simulators are an alternative to the elusive all-purpose ‘quantum computer’ and instead function as analogue computers, allowing …
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Hamiltonian engineering for quantum sensing and quantum simulation
Quantum sensing and quantum simulation are emerging areas in quantum science and technology with broad applications. In this thesis, we explore Hamiltonian engineering techniques to build better quantum sensors and quantum simulators. In quantum sensing, advanced control techniques are required to …
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Quantum Simulation of Many-body Systems with Superconducting Qubits
The study of interacting many-body quantum systems is central to the understanding of wide a range of physical phenomena in condensed-matter systems, quantum gravity, and quantum circuits. However, quantum systems are often hard to study analytically, and the classical computing resources required …
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Homogeneous quantum gases: strongly interacting fermions and rotating bosonic condensates
Quantum gases are an ideal platform for studying problems in many-body physics. Highly tunable and reconfigurable, these systems work as quantum simulators for a range of other quantum mechanical systems, ranging from neutron stars, to superconductors, to quantum Hall systems. A crucial degree of …
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Dynamics of impurities and trapped Bose-Einstein Condensates
… for a wide variety of applications, ranging from quantum simulations to quantum metrology. In this thesis, we investigate designing the confinement of tightly trapped impurities in a BEC reservoir to study their dissipative dynamics, and to study non-equilibrium dynamics of BECs confined in a …
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Towards Error-Resilience in Quantum Simulation of Lattice Gauge Theories
Digital quantum simulators may provide a powerful platform for addressing salient questions in a wide variety of fields including particle and condense-matter physics. A particularly rewarding target is given by lattice gauge theories. The fundamental principle of gauge-invariance imposes local …
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Locally Tuneable Quantum Hamiltonians with Neutral Atoms in Optical Lattices
… in optical lattices are powerful and versatile quantum simulators of quantum lattice models with many applications. While they have successfully realised many translationally invariant models, the ability to locally tune all local Hamiltonian parameters remains an outstanding goal that would …
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Artificial gauge fields in photonics and mechanical systems
Recent technological advances in quantum simulators have proven that synthetic materials are very well suited to study and realise many condensed matter models. However, many of these synthetic systems are characterized by neutral particles that do not couple to real gauge fields. In order to …
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QUANTUM SIMULATION OF BOSONIC SYSTEM AND APPLICATION OF MACHINE LEARNING
… we incorporate machine learning techniques in quantum information. We use machine learning to classify rational two-dimensional conformal field theories (CFTs). We first use the energy spectra of these minimal models to train a supervised learning algorithm. In contrast to conventional methods …
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Coherent Nanostructures: Dynamics control and noise
… been attracted by the possibility of controlling quantum system, for example for quantum computing or quantum simulators. Initially this idea was exploited only in microscopic quantum system as atoms and molecules. However these sys-tems present diffi culties on the large scale application due to …
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Artificial gauge fields and quantum hall physics in optical lattices
… in optical lattices opens a new chapter for the quantum simulation of quantum Hall physics. Motivated by recent advances and refined techniques in controlling quantum gases in optical lattices, this thesis explores how the spatio-temporal control of optical lattice systems can be exploited for …
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Quantum simulation beyond periodicity: A theoretical study of the many-body and topological properties of quasiperiodic systems
… and are for instance suspected of hosting novel quantum phases of matter that could evade thermalisation. Solid-state quasicrystalline samples are inherently subject to defects, finite grain size, and constantly subject to atomic vibrations. Together, these effects hamper the observation of truly …