Project description
Controlling subradiance in atomic arrays
How does light interact with matter at the quantum level? The answer is key to harnessing the potential of quantum technologies. While the behaviour of single atoms is well understood, it becomes complex when many atoms interact. One collective effect is subradiance, which occurs when atoms collectively trap light rather than emit it. This phenomenon could be useful for storing quantum information. With the support of the Marie Skłodowska-Curie Actions programme, the MIDAS GOLD project explores how to generate and control subradiant states in carefully arranged arrays of dysprosium atoms. By working at the single-atom level, the team aims to build a deeper understanding of these complex quantum states and lay the foundation for new advances in light-based quantum technologies.
Objective
Understanding the light-matter interaction at the quantum level is crucial for numerous applications ranging from quantum metrology to quantum computing and quantum communication. While the interaction of light with a single quantum emitter is well understood, an ensemble of many emitters coupled by a resonant probe is a complex open quantum many-body system. The collective spontaneous emission can be substantially enhanced (superradiance) or suppressed (subradiance), compared to the single emitter case. Subradiant states are particularly intriguing because they constitute an effective storage medium for light, hence for quantum information, and have been indeed proposed as useful tools for quantum communication protocols. Nevertheless, the experimental study of subradiance has been restricted to a few works, in which at most a few percent of the excitations were stored in subradiant modes, resulting in small amplitude signals.
The MIDAS GOLD project aims to address the generation of subradiant states in ordered arrays of atoms, with a control at the single-atom level. The action will take place in a running, state-of-the-art experimental system producing ordered arrays of dysprosium atoms in optical tweezers. First, we will implement an original and innovative protocol to controllably generate subradiant states with 2 atoms confined in the same optical tweezer, a first proof of principle demonstration of a bottom-up approach to subradiance. Then, we will prepare arrays of many atoms with subwavelength separations by building an accordion optical lattice, and we will explore protocols to control the storage and release of excitations in subradiant modes of the array. The accomplishment of MIDAS GOLD's objectives and the key upgrades to the existing apparatus will deepen the knowledge of subradiance, paving the way for future applications, and will build up a cutting-edge experimental system for the more general problem of collective light scattering.
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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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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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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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(opens in new window) HORIZON-MSCA-2024-PF-01
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91120 Palaiseau
France
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