Scalable platform for qudit-based quantum computing using polar molecules
Year: 2026
Type: article
Abstract: We propose a scalable qudit-based quantum processor using rotational states of polar molecules. Previously, molecular internal states were used to enlarge Hilbert space, whereas our approach uses optical tweezer arrays to achieve scalable architectures with exponential state-space growth without increasing qudit dimensionality d . Entangling gates are implemented by adiabatically bringing traps together to activate dipole-dipole interactions. We develop encoding schemes mapping single qubits into qudits with 2 ≤ d ≤ 5 and pairs of qubits into d = 4 , 5 qudits, enabling universal set of quantum gates. Additional levels in d = 3 and d = 5 qudits simplify multiqubit gate decompositions. We analyze experimental parameters for SrF and NaCs molecules. This approach provides a promising route to scalable quantum information processing with multilevel systems using existing experimental platforms.
Source: Physical Review Research
DOI: 10.1103/tcqw-ll6v
Institutions: Moscow Institute of Physics and Technology, Russian Quantum Center, Steklov Mathematical Institute, National University of Science and Technology, National University of Science and Technology, Landau Institute for Theoretical Physics, Centre National de la Recherche Scientifique, Université Paris-Saclay, Laboratoire de Physique Théorique et Modèles Statistiques, Van der Waals-Zeeman Institute, University of Amsterdam
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
OpenAlex ID: W7133206131