Project description
Transition metal dichalcogenides: a route to on-chip integrated quantum optical circuits
Quantum computing will speed the solution of extremely complex problems that classical computers could take years to solve and enable computations not previously possible. Optical quantum computing encodes qubits on single photons emitted by single-photon sources (SPSs). Challenging SPS active control is required to make photons that naturally emit light at slightly different wavelengths indistinguishable. Furthermore, conventional material platforms make integration of SPSs, waveguides, and detectors on a single chip difficult. The ERC-funded TuneTMD project will harness nano-engineered, multilayer transition metal dichalcogenides (TMDs) to fabricate novel SPSs, waveguides, beam splitters and detectors, simplifying integration and leading to on-chip integrated quantum optical circuits.
Objective
In optical quantum computing, qubits are encoded on single indistinguishable photons emitted by single-photon sources (SPSs). The computation is carried out by interfering single photons and by measuring the output using single-photon detectors. A scalable optical quantum computer requires many individual SPSs emitting indistinguishable single photons, however, different SPSs emit light at slightly different wavelengths due to fabrication imperfections. This issue can be resolved by implementing an active control for each SPS to ensure generation of completely identical photons. Despite recent progress, active control of individual SPSs still remains one of the biggest challenges in future quantum technologies. Moreover, the vision of constructing an on-chip platform by integrating SPSs, waveguides, and detectors into a single planar chip is challenging due to the complicated integration of the conventional material platforms.
The TuneTMD project aims at developing a tunable on-chip integrated optical circuit using fully nanoengineered mono- and multilayer transition metal dichalcogenides (TMDs), and performing Hong-Ou-Mandel experiments on-chip. I hypothesize that unique optical and physical properties of multilayer TMDs such as high refractive index, low loss at telecom range, active tuning capability, and easy integration between different types of TMDs, combined with optimized nanopatterning techniques make nanoengineered TMDs the ideal semiconductor platform to build tunable, on-chip, fully integrated quantum optical circuits. I will exploit my expertise in nanophotonics and 2D materials to fabricate novel TMD photonic devices, e.g. SPS, waveguide, beamsplitter, and detector. Then I will integrate them on a chip to construct fully integrated quantum optical circuits. Finally, to demonstrate the ground-breaking nature of the proposed platform, I will perform a Hong-Ou-Mandel experiment with two tunable sources.
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.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering computer hardware quantum computers
- natural sciences physical sciences electromagnetism and electronics semiconductivity
- engineering and technology nanotechnology nanophotonics
- natural sciences physical sciences theoretical physics particle physics photons
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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HORIZON.1.1 - European Research Council (ERC)
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(opens in new window) ERC-2022-STG
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2800 Kongens Lyngby
Denmark
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