93 citations · 256 across the 7 of their papers we have counts for
7 papers
Fermi condensates for dynamic imaging of electro-magnetic fields
T. K. Koponen, J. Pasanen, P. Törmä
Ultracold gases provide micrometer size atomic samples whose sensitivity to external fields may be exploited in sensor applications. Bose-Einstein condensates of atomic gases have…
Noise correlations of the ultra-cold Fermi gas in an optical lattice
T. Paananen, T. K. Koponen, P. Torma +1
In this paper we study the density noise correlations of the two component Fermi gas in optical lattices. Three different type of phases, the BCS-state (Bardeen, Cooper, and Schief…
FFLO state in 1, 2, and 3 dimensional optical lattices combined with a non-uniform background potential
T. K. Koponen, T. Paananen, J. -P. Martikainen +2
We study the phase diagram of an imbalanced two-component Fermi gas in optical lattices of 1-3 dimensions, considering the possibilities of the FFLO, Sarma/breached pair, BCS and n…
Finite temperature phase diagram of a polarized Fermi gas in an optical lattice
T. K. Koponen, T. Paananen, J. -P. Martikainen +1
We present phase diagrams for a polarized Fermi gas in an optical lattice as a function of temperature, polarization, and lattice filling factor. We consider the Fulde-Ferrel-Larki…
Fermion pairing with spin-density imbalance in an optical lattice
T. Koponen, J. Kinnunen, J. -P. Martikainen +2
We consider pairing in a two-component atomic Fermi gas, in a three-dimensional optical lattice, when the components have unequal densities, i.e. the gas is polarized. We show that…
Sound velocity and dimensional crossover in a superfluid Fermi gas in an optical lattice
T. Koponen, J. -P. Martikainen, J. Kinnunen +1
We study the sound velocity in cubic and non-cubic three-dimensional optical lattices. We show how the van Hove singularity of the free Fermi gas is smoothened by interactions and…