Project description
Advanced anyon research holds promise for fault-tolerant quantum computers
Exploring non-abelian anyons could open up new scientific possibilities by allowing the manipulation of exotic quasiparticles. Unlike familiar particles, non-abelian anyons change their entire wavefunction when swapping position. The ERC-funded Anyons project aims to overcome current technological hurdles in their study by using advanced van der Waals heterostructures. Researchers will examine the braiding of these anyons in both spatial and time domains in the fractional quantum Hall effect, using high-mobility graphene-based structures. The team will also search for higher-order anyons through innovative techniques. This research could lead to breakthroughs in fault-tolerant topological quantum computing, paving the way for more reliable quantum technologies.
Objective
Demonstrating non-abelian exchange statistics holds the promise of leading science to new terrains where we can manipulate exotic quasiparticles. Unlike fermions, bosons, and abelian anyons, the many-body wavefunction of indistinguishable non-abelian anyons is entirely altered when swapping their positions. With the theoretical groundwork for uncovering exotic exchange properties, pioneering experiments provided preliminary evidence of the lowest-order non-abelian anyons, indicating the topological superconductivity phase. Yet, due to technological limitations inherent to current state-of-the-art platforms, new observations of non-abelian statistics or preliminary signatures of higher-order non-abelian anyons must be offered.
In this proposal, I aim to directly observe the exchange statistics of non-abelian anyons, overcoming present technological challenges by incorporating proven intricate designs to innovative van der Waals (vdW) heterostructures.
We will study spatial-domain and time-domain braiding of non-abelian anyons in the fractional quantum Hall effect (FQHE) regime, realized in high-mobility graphene-based heterostructures. We will perform spatial-domain QH-interferometry (Obj. 1), allowing the study of coherence and braiding of anyons; and study their exchange statistics in the time-domain via cross-correlation of current-fluctuations of partitioned anyons (Obj. 2). Higher-order non-abelian anyons will be sought after via fractional Andreev Reflection (AR) in FQHE-superconductor (SC) hybrids. Employing shot noise measurements will allow identifying the AR charge quanta (Obj. 3), while low-disorder vdW-SC interfaces necessitate an in-situ stacking and integration of pre-patterned vdW-SC layers.
This research will identify phases hosting non-abelian anyons and thus lay the groundwork for their detection and manipulation. This contribution, being fundamental in its core, may also offer a practical option for fault-tolerant topological quantum computation.
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.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques.
- natural sciencesphysical sciencestheoretical physicsparticle physicsfermions
- natural sciencesphysical scienceselectromagnetism and electronicssuperconductivity
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Keywords
Programme(s)
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Topic(s)
Funding Scheme
HORIZON-ERC - HORIZON ERC GrantsHost institution
7610001 Rehovot
Israel