H2020Индивидуална стипендия2018–2020

PWAQUTEC · Phononic Waveguide-based Platforms for Quantum Technologies

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

Период: 2018-04-01 → 2020-03-31
Финансиране от ЕС: 178 157 €
Участници: 1
Схема: MSCA-IF-EF-ST

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Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Phononic Waveguide-based Platforms for Quantum Technologies

In the last decades science has witnessed the so-called “Second Quantum Revolution”, by which the now well understood laws of quantum physics, namely the laws of nature at very small scales, are starting to be harnessed for technological applications. Among the most promising of these applications are quantum networks, namely networks, similar to the internet, where information could be transported and processed in much more efficient ways thanks to quantum physics. The design of such networks at a large scale has become a clear objective of global and European research, since achieving this goal would allow, among others, for ultra-fast ad ultra-secure distant communication, or the fabrication of computing systems with much larger computational power. The most popular approaches to quantum networks and quantum technologies in general are based on light (photons) exchanging quantum information between information nodes such as, for instance, atoms. On the one hand, photons are good information carriers because they propagate fast and lose their quantum properties very slowly. On the other hand, they interact very weakly with atoms and other nodes. This motivates researchers to explore other possible carriers that can be used instead of, or in combination with, photons. Promising but so far unexplored candidates as carriers of quantum information are the “quantum particles of vibration”, called phonons. These phonons are in some aspects similar to photons, as they can propagate relatively fast and lose their quantum properties relatively slowly. However, they can also interact more strongly with other systems, and they could store more quantum information than photons. In this project, we propose to explore the potential of phonons for quantum technologies. We set three main goals: first, to find, study, and design the “nodes” of a phononic quantum network, equivalent to the atoms in the case of light. Second, to explore the interaction between these nodes and phononic “wires” (waveguides) and how to modify the state of one using the other. Third, to devise particular applications relevant to quantum technologies: for instance, phononic diodes that allow phonons to flow only in one direction, or phononic “bandgaps” where phonons can be stopped at will.

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

Цел на проекта

The implementation of technologies based on the rules of the quantum realm lies at the forefront of worldwide research and investment efforts. A particularly appealing application is the design of an advanced computer where quantum nodes and connectors form a miniaturized processing network. So far, many designs have been proposed based on light or other systems, but not so far on the quanta of vibrations (phonons). In this project I will go beyond discrete phonon-photon (optomechanical) quantum systems into studying a full platform based on optimized phonon emitters in combination with continuous phononic media (i.e. waveguides), for whose a fundamental understanding at the quantum level is lacking. I aim at exploiting the richer phenomenology arising for elastic phonons (e.g. longitudinal polarization states, or hybrid bulk+surface modes) to increase the effiency of protocols and devices beyond their photonic counterpart, possibly obtaining yet unattained functionalities. In the first part of this project I will develop a quantum theory of these Waveguide Elastodynamics (WQLD) platforms focusing on experimentally realistic setups. I will also incorporate the concept of phononic crystal and phononic chirality (spin-orbit coupling), and bring both these ideas to the quantum level. This will set up an enlarged parameter space for WQLD. In the second part of this project I will study simple quantum protocols, including operations on various phononic states and dissipative engineering of quantum correlations between phononic quantum emitters. Finally, in the last part I will focus on particular applications: first I will use nonreciprocal (chiral) waveguide-emitter couplings to engineer a heat isolator, which allows heat to flow along one preferential direction. Second, I will implement phononic devices for signal distribution in computing networks (e.g. diodes and transistors). My work aims at demonstrating the potential of WQLD platforms for quantum technologies.

Оригинален текст от CORDIS (на английски).

Участници

OESTERREICHISCHE AKADEMIE DER WISSENSCHAFTEN · WienКоординаторАвстрия