Researchers at the Institute for Molecular Science have demonstrated quantum entanglement between electronic and motional states using a cold-atom simulator. By trapping rubidium atoms and exciting them to Rydberg states with ultrafast laser pulses, they observed this entanglement on a nanosecond timescale. This breakthrough could improve the fidelity of two-qubit gate operations in quantum computing and opens possibilities for new quantum simulations that involve the repulsive force between particles.
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