April 21, 2025: Kang-Kuen Ni скачать в хорошем качестве

April 21, 2025: Kang-Kuen Ni

Exploring the Roles of Nuclear Spins, Quantum Coherence, and Entanglement in Ultracold Chemistry Abstract Coherence and entanglement are key features of quantum mechanics, although they are susceptible to environmental perturbations. A conventional strategy to entangle qubits with high fidelity is to leverage precisely controlled interactions while keeping qubits from decohering. By leveraging electric dipolar interactions, I will report entangling individual trapped NaCs molecules in optical tweezers and realizing a quantum logic gate with trapped molecules[1]. The bulk of the talk will try to go beyond this paradigm to explore and ask: Can coherence be preserved during chemical reactions and subsequently harnessed to produce entangled products? To address this question, we conduct investigations within the context of an atom-exchange chemical reaction (2KRb to K2 + Rb2) at a temperature of 500nK[2]. I will share our research findings including surprises and puzzles. [1] Entanglement and iSWAP gate between molecular qubits, Nature 637, 821 (2025) [2] Quantum interference in atom-exchange reactions, Science 384, 1117 (2024)