H2020Индивидуална стипендия2016–2018

QUINTESSENS · QUantum INTErface between Superconducting circuits and Spin ENSemble

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2016-03-01 → 2018-02-28
Финансиране от ЕС: 183 455 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Допинг елементи в силиций се изследват като средство за пренос на квантова информация между свръхпроводящи вериги и спинови системи. Това помага за създаването на устройства, които могат да обработват и съхраняват данни за по-дълго време, което е важно за криптографията и климатичното моделиране.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

QUantum INTErface between Superconducting circuits and Spin ENSemble

Dopants in silicon appear as a key building block for quantum information processing as they can be used to store quantum information thanks to the long coherence time of the spin of the donor nucleus. Dopants also have the potential to serve as quantum nodes, providing interfaces between different quantum systems. The quantum state of their electron spins can be exchanged with their nuclear spins, or with microwave photons. The coupling to microwave photons brings about the tantalising opportunity to create a long-lived solid-state quantum memory for superconducting circuits which are particularly efficient at manipulating quantum information but so far lack the possibility to store it for long times. In order to achieve such a spin memory for superconducting circuits, it is necessary to be able to transfer a qubit between the two systems much more rapidly than it decoheres in either system. The goal of this project is to create such an interface. Indeed this part is still missing and is of crucial importance to build scalable devices for quantum information. Fabrication of a scalable quantum device able to process quantum information and store the quantum information is of prime importance and would have a tremendous impact for various field of the society ranging from cryptography to simulation of complex systems for climate modeling, chemistry, … The overall objectives for this project are to : i) optimize dopants implantation in silicon, ii) design, fabricate and characterize high-quality-factor tunable superconducting resonators able withstand magnetic field, iii) build a setup to characterize spin-superconductor interaction, iv) demonstrate coherent exchange.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The ever shrinking size of field effect transistors for digital electronics has now reached a boundary where fluctuations in the position of a single dopant can have a significant influence on the performance of the transistor and quantum effects cannot be neglected any more. These two effects therefore represent a size limit, preventing the microelectronics industry from further downscaling and performance increase of MOSFET transistors. This calls for a breakthrough. Rather than being a drawback one can take advantage of quantum and dopant effects to build a quantum analogue of the classical electronics. To build this Quantum Electronics one would need basic quantum elements: good quantum memory, quantum bus, quantum processor, and of course and efficient interface between these elements. Superconducting circuits have already been shown to be efficient as quantum bus or quantum processor, but can only hold quantum information for tens of microseconds. In this project I propose to build a long lasting quantum memory and interface it, quantum coherently and efficiently, to a superconducting quantum bus. I will use an ensemble of spins of bismuth dopants implanted in silicon as a quantum memory. Bismuth spins have been recently proven to be able to hold quantum information over several seconds when immersed in a small magnetic field, bringing them to a so-called clock transition. I will interface this good quantum memory with superconducting circuits, bringing together a good quantum memory with a quantum bus and processor. Building this unit in silicon, I will benefit from tremendous material development made by the microelectronic industry over the past 50 years.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITY COLLEGE LONDON · LondonКоординаторОбединеното кралство