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Full-Text Articles in Physical Sciences and Mathematics
Quantum Nanophotonics: Deterministic Photon-Based Quantum Logic Gate By Exploiting Few-Photon Nonlinearity, Zihao Chen
Quantum Nanophotonics: Deterministic Photon-Based Quantum Logic Gate By Exploiting Few-Photon Nonlinearity, Zihao Chen
McKelvey School of Engineering Theses & Dissertations
Photon-based quantum logic gate has substantial advantages over conventional atom-based designs as a result of a longer coherence time and an inherent compatibility with quantum communication protocol of flying qubits, photons. As a vital logic gate for universal quantum computing, the two-photon controlled-phase gate demands a few-photon nonlinearity, which historically suffers from either an indeterministic nature in the linear optics regime, or a weak nonlinearity within naturally-occurring materials in the nonlinear optics regime. It is intriguing yet challenging to deliver a logic gate design by exploiting a genuine fewphoton nonlinearity. In this dissertation, we study a particular one-dimensional quantum nanophotonic …
Toward Devices For Exploring Pt-Symmetry In Electronic Transport Of Graphene, Michael Carovillano
Toward Devices For Exploring Pt-Symmetry In Electronic Transport Of Graphene, Michael Carovillano
Senior Honors Papers / Undergraduate Theses
Parity-time symmetry, or PT -symmetry is the principle that in quantum mechanics a non- Hermitian Hamiltonian is capable of returning real eigenstates and real spectra.Recent research has demonstrated real world observation of PT -symmetry in electronics and optics. We aim to expand the regime of observed PT -symmetry through measurement of the electronic transport of graphene devices. Drawing from analogous experiments, we plan to use balanced ohmic resistance acting as both loss and relative gain to induce the required unbroken PT -symmetry regime. This paper analyzes techniques used in fabrication of such devices as well as the basis of the …
Exploring Quantum Dynamics And Thermodynamics In Superconducting Qubits, Mahdi Naghiloo
Exploring Quantum Dynamics And Thermodynamics In Superconducting Qubits, Mahdi Naghiloo
Arts & Sciences Electronic Theses and Dissertations
Quantum technology has been rapidly growing due to its potential revolutionary applications. In particular, superconducting qubits provide a strong light-matter interaction as required for quantum computation and in principle can be scaled up to a high level of complexity. However, obtaining the full benet of quantum mechanics in superconducting circuits requires a deep understanding of quantum physics in such systems in all aspects. One of the most crucial aspects is the concept of measurement and the dynamics of the quantum systems under the measurement process. This thesis is intended to be a pedagogical introduction to the concept of quantum measurement …