Rydberg Blockade and entanglement of two atoms
When two quantum systems interact strongly, their simultaneous excitation by the same driving pulse may be forbidden: this is called blockade of excitation. Recently, extensive studies have been devoted to the so-called Rydberg blockade between neutral atoms, which appears due to the interaction induced by their large dipole moments when they are in highly excited states. In particular, this blockade has been proposed as a basic tool in quantum information processing with neutral atoms and can be used to deterministically generate entanglement of several atoms.
This talk will describe our demonstration of the Rydberg blockade between two atoms individually trapped in optical tweezers. A direct follow-up is the preparation of an entangled state of the two atoms. The talk will describe this preparation and the caracterization of the amount of entanglement produced.