Long-lived entanglement generation of nuclear spins using coherent light

Abstract

Nuclear spins of noble-gas atoms are exceptionally isolated from the environment and can maintain their quantum properties for hours at room temperature. Here we develop a mechanism for entangling two such distant macroscopic ensembles by using coherent light input. The interaction between the light and the noble-gas spins in each ensemble is mediated by spin-exchange collisions with alkali-metal spins, which are only virtually excited. The relevant conditions for experimental realizations with ^{3}\text{He} or ^{129}\text{Xe} are outlined.

References in corpus (5)

• The Quantum Internet
• Quantum Computing
• Scalable multi-particle entanglement of trapped ions
• Gravitational wave detection beyond the standard quantum limit using a negative-mass spin system and virtual rigidity
• Dipolar and scalar ${}^3$He-${}^{129}$Xe frequency shifts in stemless cells

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• Enhanced coupling of electron and nuclear spins by quantum tunneling resonances
• Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study