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Long-lived entanglement of molecules in magic-wavelength optical tweezers.
Nature
January 2025
Department of Physics, Durham University, Durham, United Kingdom.
Realizing quantum control and entanglement of particles is crucial for advancing both quantum technologies and fundamental science. Substantial developments in this domain have been achieved in a variety of systems. In this context, ultracold polar molecules offer new and unique opportunities because of their more complex internal structure associated with vibration and rotation, coupled with the existence of long-range interactions.
View Article and Find Full Text PDFTheoretical Study on the Excitation Energy Transfer Dynamics in the Phycoerythrin PE555 Light-Harvesting Complex.
ACS Omega
December 2024
Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials and Micro-Nano Devices, Renmin University of China, Beijing 100872, China.
Photosynthesis in nature begins with light harvesting. The special pigment-protein complex converts sunlight into electron excitation that is transmitted to the reaction center, which triggers charge separation. Evidence shows that quantum coherence between electron excited states is important in the excitation energy transfer process.
View Article and Find Full Text PDFSpatiotemporal Spectroscopy of Fast Excited-State Diffusion in 2D Covalent Organic Framework Thin Films.
J Am Chem Soc
January 2025
Department of Chemistry and Center for NanoScience (CeNS), University of Munich (LMU), Butenandtstraße 5-13, Munich 81377, Germany.
Covalent organic frameworks (COFs), crystalline and porous conjugated structures, are of great interest for sustainable energy applications. Organic building blocks in COFs with suitable electronic properties can feature strong optical absorption, whereas the extended crystalline network can establish a band structure enabling long-range coherent transport. This peculiar combination of both molecular and solid-state materials properties makes COFs an interesting platform to study and ultimately utilize photoexcited charge carrier diffusion.
View Article and Find Full Text PDFSpin-bearing molecules as optically addressable platforms for quantum technologies.
Nanophotonics
November 2024
Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris, France.
Efforts to harness quantum hardware relying on quantum mechanical principles have been steadily progressing. The search for novel material platforms that could spur the progress by providing new functionalities for solving the outstanding technological problems is however still active. Any physical property presenting two distinct energy states that can be found in a long-lived superposition state can serve as a quantum bit (qubit), the basic information processing unit in quantum technologies.
View Article and Find Full Text PDFStrongly subradiant states in planar atomic arrays.
Nanophotonics
February 2024
Department of Physics, ITMO University, Saint-Petersburg, Russia.
The optically trapped ensembles of atoms provide a versatile platform for storing and coherent manipulation of quantum information. However, efficient realization of quantum information processing requires long-lived quantum states protected from the decoherence e.g.
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