Project description
Study explores high-frequency phonon behaviour in semiconductor nanostructures
Phonons – atomic vibrations in solids – are crucial in material science and solid-state physics. High-frequency phonons are particularly interesting for quantum technology and nanophononics owing to their compatibility with quantum devices and potential to surpass modern computation speeds. This makes them useful for qubits, quantum memories, hybrid systems and quantum computing networks. Funded by the Marie Skłodowska-Curie Actions programme, the REPOC project will use an optical open cavity to excite and detect coherent phonons in II-VI group semiconductors. By growing samples with an acoustic cavity and adjusting the optical cavity length, researchers will study how photon energy affects phonon generation efficiency. They will also seek to achieve resonant phonon excitation by matching the laser pulse round-trip time with the phonon frequency.
Objective
Phonons are vibrations of atoms in solids that play a significant role in material science and solid-state physics. High-frequency phonons have gained attention in the fields of quantum technology and nanophononics. Their small wavelengths make them compatible with quantum nano-devices and their frequencies can surpass modern computation speeds. This potential makes phonons useful for qubits, quantum memories, hybrid systems, and elements in quantum computing networks. Exploring phonons and their interactions with other excitations is important for advancements in solid-state physics and quantum technology.
The project focuses on using a novel experimental method based on the optical open cavity to excite and detect coherent phonons in materials from the II-VI group of semiconductors. We plan to grow samples with an acoustic cavity enclosed in Distributed Bragg Reflectors, which support the cavity acoustic mode. By placing the sample inside the open optical cavity and adjusting its length, we can sweep the energy of the excitation photon, allowing comprehensive studies on the influence of photon energy on phonon generation efficiency. Additionally, we can achieve quasi-resonant excitation of phonons in the time domain by adjusting the length of the cavity in a way that the round-trip time of the laser pulse matches the frequency of the generated phonons, resonantly pumping the desired phonon frequency supported by the acoustic cavity. This experimental scheme will allow us to enhance the efficiency of phonon excitation by exploiting four resonances for coherent phonon generation: acoustic cavity resonance, optical cavity resonance, excitonic resonance, and in-phase (temporal) resonance excitation.
As a result of the project we expect to provide a comprehensive study on the efficiency of the high-frequency coherent phonon generation in the II-VI semiconductor nanostructures obtained by innovative experimental technique exploiting optical open cavity.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences atomic physics
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering computer hardware quantum computers
- natural sciences physical sciences electromagnetism and electronics semiconductivity
- natural sciences physical sciences optics laser physics
- natural sciences physical sciences theoretical physics particle physics photons
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2023-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
00-927 Warszawa
Poland
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