Researchers at Germany's Karlsruhe Institute of Technology and French chemical research center Chimie ParisTech/CNRS have advanced the development of molecule-based materials that can serve as light-addressable fundamental quantum bits (qubits).
A nuclear-spin-containing dimeric europium(III) molecule exhibits luminescence when excited by ultraviolet light-absorbing ligands surrounding the europium(III) center, which then transfer light energy to the center.
Light is emitted when the excited center relaxes to the ground state, a process known as sensitized luminescence.
Laser-driven spectral hole burning detects the polarization of the nuclear spin levels, signaling the generation of an efficient light-nuclear spin interface that can produce light-addressable hyperfine qubits.
Chimie ParisTech/CRNS' Philippe Goldner said, "By demonstrating for the first time light-induced spin polarization in the europium(III) molecule, we have succeeded in taking a promising step towards the development of quantum computing architectures based on rare-earth ion-containing molecules."
From Karlsruhe Institute of Technology (Germany)
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