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Spin squeezing of atoms by Rydberg blockade

Isabelle Bouchoule·Klaus Moelmer
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Abstract

We show that the interaction between Rydberg atomic states can provide continuous spin squeezing of atoms with two ground states. The interaction prevents the simultaneous excitation of more than a single atom in the sample to the Rydberg state, and we propose to utilize this blockade effect to realize an effective collective spin hamiltonian J_x^2-J_y^2. With this hamiltonian the quantum mechanical uncertainty of the spin variable J_x+J_y can be reduced significantly.

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Isabelle Bouchoule, Klaus Moelmer. 2001-06-20. Spin squeezing of atoms by Rydberg blockade. https://arxiv.org/abs/quant-ph/0105144

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