Probing spatial spin correlations of ultracold gases by quantum noise spectroscopy.
Spin noise spectroscopy with a single laser beam is demonstrated theoretically to provide a direct probe of the spatial correlations of cold fermionic gases. We show how the generic many-body phenomena of antibunching, pairing, antiferromagnetic, and algebraic spin liquid correlations can be revealed by measuring the spin noise as a function of laser width, temperature, and frequency.
Bruun
G M
GM
Dipartimento di Fisica, Università di Trento and CNR-INFM BEC Center, I-38050 Povo, Trento, Italy.
Andersen
Brian M
BM
Demler
Eugene
E
Sørensen
Anders S
AS