Project description
Imposing order where there was none
While all matter consists of the same fundamental building blocks, highly diverse properties of materials are possible in part due to the very different ways in which these particles can be organised. For instance, while a liquid is made of a random distribution of particles, a crystal lattice is assembled from a regular distribution of atoms. Topological order is a relatively new term to describe an unusual state of order that is inherently stable and provided with a robustness against perturbations. The EU-funded ONTOP project is exploring the ability to impose on-demand topological order in photonic systems through a careful distribution of optical gain and loss, thus opening the door to exotic new photonic devices and reconfiguration capabilities.
Objective
Physical materials can display a topological order, i.e. a collective organization characterized by a discrete number or “topological charge”. Because the integer nature of this charge must be preserved throughout the structure, topological order is intrinsically immune to perturbations and the system is said to be topologically protected. Recently, the replication of topological protection in optics has raised the interest of the scientific community for its potential ability to overcome fundamental problems—like the influence of imperfections intrinsically present in nanoscale-fabrication processes, which currently preclude the development of multiple photonic technologies. Yet, at optical frequencies the weak response of materials often precludes a topological approach such that even careful designs can only partially deliver the expected protection. In contrast to material properties, gain and loss can be easily manipulated in optics. While the exploitation of non-hermitian systems—with non-conserved energy—recently enabled the formation of topological order in wave physics, it simultaneously questioned our theoretical understanding of topology and offered a large variety of new degrees of freedom that are yet to be explored.
Here I suggest exploiting the versatility of optical gain-loss to imprint topological order “on-demand” onto otherwise topologically trivial systems. Through non-uniform spatial distributions of optical gain and loss I intend to demonstrate theoretically the formation of topological protection in random systems and implement my predictions in existing experimental platforms. In sharp contrast with the conventional conception of topology that relies on careful and rigid designs, this project will explore the possibility to engineer topology through external control. In this way, I will trigger a paradigmatic change that will enable the development of new photonic devices, whose topology can be manipulated and reconfigured “on-demand”.
Fields of science (EuroSciVoc)
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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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
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.
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
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.
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.
MSCA-IF-EF-RI - RI – Reintegration panel
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2018
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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.
1040 Wien
Austria
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.