Towards a New Quantum Platform Based on Ultracold Molecules
Abstract
Ultracold polar molecules are a promising platform for quantum information processing due to their strong, anisotropic dipolar interactions and rich internal structures. In our prior collaboration, we successfully attained long coherence times of molecular qubits and accomplished two-qubit entanglement with bosonic diatomic molecules (CaF), leveraging the distinctive rotational structure and electric dipole-dipole interactions of these molecules. Building upon the achievements of this previous project, here we propose an expansion of molecular quantum science platforms to explore new paradigms, including the construction of novel qubit-qudit states and the development of new quantum operations by incorporating polyatomic molecules and Fermionic molecules with unique rich internal structures. The key properties of ultracold molecules we would like to concentrate on during this project are 1. various internal structures of rotation and bending, 2. strong anisotropic electric dipole-dipole interactions between molecules, and 3. Bose and Fermi statistics. We select appropriate molecules suitable for each particular purpose. The experiment with CaF molecules, with which we have demonstrated entanglement of two molecular qubits, will explore strong and anisotropic dipole-dipole interactions and demonstrate direction-dependent quantum gates with a two-dimensional molecular array. CaOH molecules will be used to investigate possible qubit and qudit states and unique quantum operations utilizing rotation and bending modes that are unique to polyatomic molecules. MgF molecules have multiple isotopologues including both Bosons and Fermions and are suitable for studying how we can engineer quantum statistics to develop novel quantum operations. A close collaboration between the two groups in the US and Republic of Korea will develop new ideas of quantum information processing and expedite quantum science research. The success of this project will present new ways of engineering quantum information using ultracold molecules and boost the whole of quantum information science.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA23862414070
Entities
People
- John M. Doyle
Organizations
- Air Force Office of Scientific Research
- President and Fellows of Harvard College
- United States Air Force