CQ3D · 3D Circuit Quantum Electrodynamincs with Flux Qubits
7РП — „Хора“ (Действия „Мария Кюри“)
- Период
- 2012-02-01 → 2016-01-31
- Финансиране от ЕС
- 100 000 €
- Участници
- 1
- Схема
- MC-CIG
Линиите свързват координатора с партньорите.
Накратко на български
Свръхпроводящите кубити и резонатори се изследват чрез създаване на 3D архитектури, например с използване на алуминий или диаманти. Това помага за по-доброто разбиране на механизмите за загуба на енергия и подобрява работата на компонентите за квантови компютри.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
3D Circuit Quantum Electrodynamincs with Flux Qubits
CIG program cQ3D was designed to facilitate the integration of tenure-tracker PI DiCarlo and his young research team into the Kavli Institute of Nanoscience at Delft University of Technology (TUD). The program has developed along two main fronts: (1) infrastructure (simulation software and fabrication materials/equipment) enabling robust design and processing of superconducting qubits and resonators in the circuit quantum electrodynamics (cQED) architecture for quantum computing; and (2) a research agenda stimulating collaboration with local faculty members. The infrastructure developments have produced the following most notable results: - Fabrication of aluminum-based transmon qubits coupled to 3D resonators with state of the art coherence, allowing detailed study and identification of dominant energy relaxation mechanisms in these qubits, including quasiparticle-tunneling effects. - Strong coupling of coherent electron-spin ensembles of P1 centers in diamond to magnetic-field compatible resonators. - Through simulation-inspired fabrication, an improvement in the performance of qubits and resonators in 2D cQED by incorporating 3D features, such as deeply-etched substrates and large capacitive gaps. These have significantly narrowed the performance gap between 2D and 3D approaches to cQED. - Realization of flux qubits made from superconductor-normal-superconductor junctions with magnetic-field compatible materials. This program has produced 4 publications most closely related to the program scientific agenda. The infrastructure developments have influenced all activities in the group, for a total of 12 published experimental papers by the group during this integration period. Most importantly, the program has fostered collaborations with many faculty members at the host institution, including experimentalists R. Hanson, L. Kouwenhoven, L. Vandersypen, and E. Bakkers, as well as theorists A. Akhmerov and Ya. Blanter. These collaborations have contributed to the successful integration of DiCarlo lab into both the Kavli Institute and the newly-formed QuTech Institute also at TUD, and contributed to the promotion of PI DiCarlo to a tenured, associate professorship in October 2015.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
cQ3D proposes a 48-month program to improve the quantum coherence of superconducting flux qubits using cutting-edge developments in circuit quantum electrodynamics (QED). Beyond the immediate benefit to quantum computing with superconducting circuits, this effort will enable fundamental physics, such as the investigation of non-equilibrium quasiparticles in superconductors. Finally, it will pave the way for hybrid quantum computing with superconducting flux qubits coupled to electronic spins.cQ3D will first focus on achieving strong coupling of flux qubits to three-dimensional (3D) superconducting resonators. The evolution from 2D to 3D circuit QED reduces the contribution of lossy metal and dielectric surfaces and interfaces to qubit energy decay by storing this energy primarily in vacuum. By providing a means to control, couple and measure flux qubits in a near-perfect electromagnetic environment with minimal additional circuitry, we aim to surpass and elucidate current limits to coherence in flux qubits. In particular, this pursuit may uncover a contribution from non-thermal distributions of quasiparticles, as predicted by recent theory. The developed architecture will finally be used to couple small ensembles of electronic spins to flux qubits and/or to resonators using flux qubits as a quantum interconnect.A CIG grant will facilitate the local and international integration of my new group at TU Delft by creating opportunities for collaboration and discussion with several faculty in the Kavli Institute of Nanoscience, and facilitating research complementing that of my international collaborators. Simultaneously, this grant will enable key infrastructure developments in fabrication and simulation that will impact my group beyond the tenure-track race.
Оригинален текст от CORDIS (на английски).
Участници
- TECHNISCHE UNIVERSITEIT DELFT · DelftКоординаторНидерландия
Връзки
Данни: CORDIS, © Европейски съюз