Abstract We study a system of periodic Bose-condensed atoms coupled to cavity photons using the input-output formalism of [14]. We show for the first time that the cavity will either act as a through-pass Lorentzian filter when the superfluid fraction of the condensate is minimum, or completely reflect the input field when the superfluid fraction is maximum. We show that by monitoring the ratio between the transmitted field and the reflected field, one can estimate the superfluid fraction.

arXiv:0905.0817Open PhysicsDec 1, 20093 citations

Phase separation of superfluids in the chain of four-component ultracold atoms

Gergely Barcza, E. Szirmai, Jenő Sólyom +1 more

arXiv:1409.3057The European Physical Journal Special TopicsApr 1, 20155 citations

Physica C Superconductivity

Superfluidity from He-4 to ultracold atomic condensed systems

Jozef T. Devreese, Jacques Tempere

Published Jan 31, 2012• 4 citations

Publisher

DOI: 10.1016/j.physc.2012.01.011

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^4

He, ultracold atomic Bose gases, various superconducting and neutral systems with pairing, like ultracold atomic Fermi gases and the neutron component in compact stars. The order parameters, the energy gain, and critical velocities are found.

^4

He, ultracold atomic Bose gases, charged pion and kaon condensates in rotating neutron stars, and various superconducting fermionic systems with pairing, like proton and color-superconducting components in compact stars, metallic superconductors, and neutral fermionic systems with pairing, like the neutron component in compact stars and ultracold atomic Fermi gases. Order parameters of the "mother" condensate in the superfluid and the new condensate of excitations, corresponding energy gains, critical temperatures and critical velocities are found.