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p-wave superfluidity and BCS-BEC crossover of ultracold polar molecules

Project description

Studying rare quantum states in ultracold atoms

P-wave superfluids are a special state of matter where particles pair up in unique ways, leading to fascinating quantum effects such Majorana zero modes. These states could help scientists further understand high-temperature superconductors and elementary particles. With the support of the Marie Skłodowska-Curie Actions programme, the MolPWSupFluid project will focus on cooling specific molecules (NaK) to extremely low temperatures to create and study these superfluids. Researchers will use advanced techniques to control how the molecules interact and explore their unusual properties such as how they pair up and behave under certain conditions.

Objective

P-wave superfluids of fermionic particles are a crucial subject of study in condensed matter systems, where fermions pair up with nonzero angular momentum and exotic quantum phenomena like Majorana zero mode are predicted to exist. Investigation into the p-wave superfluids not only helps unravel the underlying mechanism of high-T superconductors but also provides insights into the fundamental symmetry of elementary particles.

Over the last decade, ultracold quantum gas of polar molecules with controllable long-range dipolar interaction has emerged to be a powerful testbed to investigate such exotic quantum phases. At sufficiently low temperatures, fermionic molecules can pair up with p-wave symmetry and form a many-body BCS state. With the molecular scattering controlled with field-link resonances, the BCS-BEC crossover of diatomic molecules can be achieved. However, cooling of these fermionic molecules to this regime and the detection of their emerging properties remains challenging.

The main goal of MolPWSupFluid project is to cool polar fermionic NaK molecules to unprecedentedly low temperatures and study the many-body behavior with strong dipolar interaction including p-wave superfluidity and their crossover to a Bose-Einstein condensate of tetratomic molecules. This project will focus on technical advancements in microwave field control, enabling state-of-the-art evaporative cooling of dipolar molecules and facilitating the precise manipulation of molecular scattering with microwave-induced field-link resonances. With successful cooling of the NaK molecules below the superfluid critical temperature, we will investigate the anisotropic pairing property and the Higgs mode excitation of the molecules with critical velocity and Bragg spectroscopy. Finally, we will investigate the topological property of vortex in the p-wave superfluid and the non-Abelian statistics of Majorana zero modes with braiding operations.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2024-PF-01

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Coordinator

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV
Net EU contribution
€ 202 125,12
Address
HOFGARTENSTRASSE 8
80539 MUNCHEN
Germany
Region
Berlin Berlin Berlin
Activity type
Research Organisations
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Total cost
No data