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Updated: Jul 8, 2025

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Spin Dynamics Dominated by Resonant Tunneling into Molecular States
Yoo Kyung Lee1, Hanzhen Lin1, Wolfgang Ketterle1
1Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA; Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA; and MIT-Harvard Center for Ultracold Atoms, Cambridge, 02139 Massachusetts, USA.
Abstract:
Optical lattices and Feshbach resonances are two of the most ubiquitously used tools in atomic physics, allowing for the precise control, discrete confinement, and broad tunability of interacting atomic systems. Using a quantum simulator of lithium-7 atoms in an optical lattice, we investigate Heisenberg spin dynamics near a Feshbach resonance. We find novel resonance features in spin-spin interactions that can be explained only by lattice-induced resonances, which have never been observed before. We use these resonances to adiabatically convert atoms into molecules in excited bands. Lattice-induced resonances should be of general importance for studying strongly interacting quantum many-body systems in optical lattices.
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