Sökning: "bosonic states"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden bosonic states.

  1. 1. Building a Bosonic Microwave Qubit

    Författare :Marina Kudra; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3D cavity; qubit; cubic phase state; continuous variable; circuit QED; bosonic codes; GKP-state; superconducting circuits;

    Sammanfattning : Superconducting circuits is a promising platform for quantum computing. Quantum information is usually stored in discrete two-level qubits e.g. in transmon qubits. LÄS MER

  3. 2. Quantum state characterization with deep neural networks

    Författare :Shahnawaz Ahmed; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Machine learning; classification; optical quantum states.; quantum state tomography; deep neural networks; bosonic states; quantum computing; reconstruction; quantum state discrimination;

    Sammanfattning : In this licentiate thesis, I explain some of the interdisciplinary topics connecting machine learning to quantum physics. The thesis is based on the two appended papers, where deep neural networks were used for the characterization of quantum systems. LÄS MER

  4. 3. Multi Quanta Relaxation and Nonclassicality of Nonlinear Oscillators

    Författare :Aurora Voje; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nonlinear Damping; Nonclassical States; Entanglement; Quantum Duffing Oscillator;

    Sammanfattning : The focus of the study is the free quantum evolution of Duffing oscillators which are nonlinearly coupled to bosonic environments. The work evolves from a particular system of an undamped, nonlinear graphene resonator mode to a more generalized framework of oscillator modes interacting with two different configurations of bosonic environments. LÄS MER

  5. 4. Digital measurement and control of microwave quantum circuits

    Författare :Mats Tholén; Vladislav Korenivski; David B. Haviland; Stefan Filipp; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Superconducting circuits; circuit QED; quantum sensing; quantum capaci- tance; 3D cavity; bosonic codes; noise radar; instrumentation; supraledande kretsar; krets QED; kvantavkänning; kvantkapacitans; 3D ka- vitet; bosonic codes; brusradar; mätinstrument; Material and Nano Physics; Material- och nanofysik;

    Sammanfattning : Superconducting circuits are well established tools for quantum sensing anda promising new platform for quantum computing. Typically these quantumcircuits operate at microwave frequencies where the thermal noise at 10mK in a dilution refrigerator is small compared to the ground-state energy. LÄS MER

  7. 5. Microwave Gaussian quantum metrology

    Författare :Robert Jonsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum Fisher Information; Bosonic channel; Quantum Sensing; Gaussian; Quantum Radar;

    Sammanfattning : With increasingly sensitive measurements being made possible by technological development, there arises situations where the effects of quantum mechanics have to be taken into account. While quantum mechanics tells us that there are fundamental limits of measurement sensitivity, it also gives us the tools to constructively push the same limits for experimental systems. LÄS MER