| LDR | | 00000nam u2200205 4500 |
| 001 | | 000000436356 |
| 005 | | 20200228141625 |
| 008 | | 200131s2019 ||||||||||||||||| ||eng d |
| 020 | |
▼a 9781085734257 |
| 035 | |
▼a (MiAaPQ)AAI13806559 |
| 040 | |
▼a MiAaPQ
▼c MiAaPQ
▼d 247004 |
| 082 | 0 |
▼a 530 |
| 100 | 1 |
▼a Yang, Yuan-Chi. |
| 245 | 10 |
▼a Quantum Computation: High-fidelity Quantum Gates on Quantum Dot Qubits in the Presence of 1/F Charge Noise Using Strong Drives, Numerical and Analytical Analysis. |
| 260 | |
▼a [S.l.]:
▼b The University of Wisconsin - Madison.,
▼c 2019. |
| 260 | 1 |
▼a Ann Arbor:
▼b ProQuest Dissertations & Theses,
▼c 2019. |
| 300 | |
▼a 276 p. |
| 500 | |
▼a Source: Dissertations Abstracts International, Volume: 81-03, Section: B. |
| 500 | |
▼a Advisor: Coppersmith, Susan N. |
| 502 | 1 |
▼a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2019. |
| 506 | |
▼a This item must not be sold to any third party vendors. |
| 520 | |
▼a Electrically gated semiconductor quantum dot devices are promising platforms for quantum information processing. Much effort has gone towards achieving high-quality quantum computation using qubits designed in these devices and high-fidelity operations have recently been demonstrated. However, the performance of these qubits is still limited by the decoherence induced by environmental noise. How to combat decoherence is thus essential to further advance the devices. In this thesis, we focus on suppressing the effects of decoherence by operating the system as fast as possible, aiming at finishing the quantum operations long before the quantum information leaves the system. Focusing on double-quantum-dot charge qubits and hybrid qubits, we design high-fidelity single-qubit rotations by using strong ac drives. Based on such strong driving techniques, we predicted that gates with fidelities higher than 99.9% can be achieved in the presence of 1/f charge noise typical of solid state devices. We further propose fast, high-fidelity entangling gates in a pair of exchange-coupled double-quantum-dot hybrid qubits by using tunnel coupling controls, yielding controlled-Z and controlled-NOT gates with fidelities higher than 99.9%.We also investigate recent experiments on a pair of exchange-coupled electron spin qubits and find that control errors and decoherence are the two dominant sources of infidelity. By increasing the gate speed and calibrating the experiments using a gate sequence that we propose, we predict that high-fidelity quantum operations on electron spin qubits are achievable. |
| 590 | |
▼a School code: 0262. |
| 650 | 4 |
▼a Physics. |
| 690 | |
▼a 0605 |
| 710 | 20 |
▼a The University of Wisconsin - Madison.
▼b Physics. |
| 773 | 0 |
▼t Dissertations Abstracts International
▼g 81-03B. |
| 773 | |
▼t Dissertation Abstract International |
| 790 | |
▼a 0262 |
| 791 | |
▼a Ph.D. |
| 792 | |
▼a 2019 |
| 793 | |
▼a English |
| 856 | 40 |
▼u http://www.riss.kr/pdu/ddodLink.do?id=T15490483
▼n KERIS
▼z 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
| 980 | |
▼a 202002
▼f 2020 |
| 990 | |
▼a ***1008102 |
| 991 | |
▼a E-BOOK |