6533b858fe1ef96bd12b588b

RESEARCH PRODUCT

Josephson effect in superfluid atomic Fermi-gases

Mirta RodriguezPäivi TörmäGheorghe Sorin ParaoanuGheorghe Sorin Paraoanu

subject

SuperconductivityJosephson effectPhysicsCondensed Matter::Quantum GasesCondensed matter physicsCondensed Matter::OtherCondensed Matter - SuperconductivityFOS: Physical sciencesContext (language use)Atomic and Molecular Physics and OpticsPi Josephson junctionSuperfluiditySuperconductivity (cond-mat.supr-con)PairingCondensed Matter::SuperconductivityPhysics::Atomic PhysicsHyperfine structureQuantum tunnelling

description

We consider an analog of the internal Josephson effect in superfluid atomic Fermi-gases. Four different hyperfine states of the atoms are assumed to be trapped and to form two superfluids via the BCS-type pairing. Weshow that Josephson oscillations can be realized by coupling the superfluids with two laser fields. Choosing the laser detunings in a suitable way leads to an asymmetric below-gap tunneling effect for which there exists no analogue in the context of solid-state superconductivity.

yearjournalcountryeditionlanguage
2002-04-17
https://dx.doi.org/10.48550/arxiv.cond-mat/0204376