Time Independent Quantum Circuits with Local Interactions

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Kianvash, Farzad | 2017

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50023 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Karimipour, Vahid
Abstract:
one of the important challenges for implementation of Quantum Computation is fabrication of Quantum Wires that transport the Quantum Information from one part of the Quantum Hardware to the other parts. Heisenberg Spin Chains are promising candidate for this. In article [28] Gaussian wave packets on the spin chains are used to encode the logical qubits. In this model, to implement unitary operation on these qubits, extra interaction are designed in some parts of the spin chains. As Gaussian wave packets move along this interactions, the desired unitary operators act on them. In fact, this is an static model without external control to perform Quantum Computation. In spite of many interesting features of this model, non-local interactions are used to implement CPHASE gate. This is an obstacle for experimental realization of this model. By making use of Gauge particles in Quantum Electrodynamics, we replaced the long range interactions with nearest neighbor interactions
Keywords:
Quantum Computation ; Quantum Spin Chains ; Heisenberg Chain ; Nearest Neighbor ; Gaussian Wave Packet