title: Long-lived quantum memory with nuclear atomic spins.
abstract: We propose to store nonclassical states of light into the macroscopic collective nuclear spin (10(18) atoms) of a 3He vapor, using metastability exchange collisions. These collisions, commonly used to transfer orientation from the metastable state 2 3S1 to the ground state of 3He, can also transfer quantum correlations. This gives a possible experimental scheme to map a squeezed vacuum field state onto a nuclear spin state with very long storage times (hours).
authors.affiliation: LKB, UPMC, case 74, place Jussieu, 75252 Paris Cedex 05, France.
authors.forename: A
authors.initials: A
authors.lastname: Dantan
authors.forename: G
authors.initials: G
authors.lastname: Reinaudi
authors.forename: A
authors.initials: A
authors.lastname: Sinatra
authors.forename: F
authors.initials: F
authors.lastname: Laloë
authors.forename: E
authors.initials: E
authors.lastname: Giacobino
authors.forename: M
authors.initials: M
authors.lastname: Pinard