H2020Индивидуална стипендия2017–2019

QSUP · Demonstration of Quantum Supremacy in A Photonic Device

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

Период: 2017-03-01 → 2019-04-14
Финансиране от ЕС: 200 195 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Фотонните устройства се тестват за постигане на квантово превъзходство чрез създаване на състояния с четири или повече фотона. Това доказва възможността за изчисления, които надхвърлят капацитета на класическата физика, и мотивира разработването на пълномащабни квантови компютри.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Demonstration of Quantum Supremacy in A Photonic Device

The overarching objective of this project was to demonstrate quantum supremacy using a photonic device. Our original intention was to focus on a time-bin approach based on a cavity loop architecture. However, a feasibility study proved this approach to be unfeasible and we adopted a spatially multiplex approach instead. We achieved a four photon source capability and are looking towards implementation of a 8 photon state in the near future. The demonstration of quantum supremacy will be an important milestone in the history of quantum computers. It will provide great motivation for the many researchers who are aiming to build full scale quantum computers, and it will also ensure the public at large that their money is being spent on areas that will enable computation beyond what is possible using classical physics.

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

Цел на проекта

Quantum computers are predicted to have capabilities beyond what is currently available using classical physics. The effort to build a universal quantum computer is a global one. Different approaches are being adopted to control, manipulate and store quantum information, trapped-ions, electron-spins and single-photon modes. However, as the field of quantum computation currently stands one fundamental question still remains: Do quantum computers provide a genuine advantage over their classical counterparts? Determining the answer to this question is the aim of this project. To do this we will carry out an experiment known as BosonSampling: The interference of many single-photon modes across a large interferometric network. It is strongly believed that no classical algorithm could efficiently simulate such an experiment, and thereby performing it in the laboratory will provide the strongest evidence to date that quantum mechanics permits computation beyond what is possible classically. It has been predicted that we will reach such a level of experimental complexity near the 20-30 photon level, thus it is important to move beyond the small scale demonstrations of 3 or 4 photons performed to date. The two main obstacles which have hindered the field moving towards larger BosonSampling experiments are access to multi-photon sources and low loss interferometric networks. In this proposal we will make use of state-of-the-art photon sources based on light emitting quantum dots coupled to photonic crystal waveguides which have demonstrated coupling efficiencies of over 98% to waveguide structures. Finally, to tackle photon loss we will take full advantage of high quality and low loss free-space optical components to build an interferometric network. The optical modes will be encoded as separate temporal modes, thus reducing the experimental complexity of the interferometer. We aim to perform a 10 photon BosonSampling experiment by the end of this two year fellowship.

Оригинален текст от CORDIS (на английски).

Участници

KOBENHAVNS UNIVERSITET · KOBENHAVNКоординаторДания