Spin squeezing of atoms by Rydberg blockade

2001/05/29 by Isabelle Bouchoule, Bouchoule, Isabelle, Klaus Moelmer +1
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum Physics (quant-ph) #quant-ph

paper · pdf · doi:10.48550/arxiv.quant-ph/0105144

4 pages, 3 figures, submitted to PRL

openalex publication_date 2001/05/29 · arxiv created 2001/06/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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_x²-J_y². With this hamiltonian the quantum mechanical uncertainty of the spin variable J_x+J_y can be reduced significantly.

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