Vijin Venu
University of Toronto
Ultracold atomAnalytical chemistryOpticsPhysicsDegrees of freedomConductivitySpectral widthLattice (order)Resolved sideband coolingMicroscopyP waveHamiltonian (quantum mechanics)Excited stateAtomic orbitalScatteringMaterials scienceEffective mass (solid-state physics)Condensed matter physicsSidebandTrappingLattice (module)Optical conductivityQuantum gasTransport dynamicsQuantum electrodynamicsFeshbach resonanceMolecular physicsRelaxation (NMR)PotassiumFermionFluorescence-lifetime imaging microscopyAtomic numberQuantum mechanicsMicroscopeFermi gasSum rule in quantum mechanicsOptical latticeHomogeneous space
13Publications
2H-index
25Citations
Publications 13
Newest
#1Mikhail MamaevH-Index: 5
#2Peiru HeH-Index: 4
Last. Ana Maria ReyH-Index: 62
view all 6 authors...
We introduce a protocol to observe p-wave interactions in ultracold fermionic atoms loaded in a three-dimensional optical lattice. Our scheme uses specific motionally excited band states to form an orbital subspace immune to band relaxation. A laser dressing is applied to reduce the differential kinetic energy of the orbital states and make their dispersion highly isotropic. When combined with a moderate increase of the scattering volume by a Feshbach resonance, the effect of p-wave interactions...
#1Peihang XuH-Index: 2
#2Vijin VenuH-Index: 2
Last. Joseph H. ThywissenH-Index: 27
view all 8 authors...
#1Rhys AndersonH-Index: 3
Last. Joseph H. ThywissenH-Index: 27
view all 9 authors...
#1Peihang XuH-Index: 2
#2Rhys AndersonH-Index: 3
Last. Joseph H. ThywissenH-Index: 27
view all 7 authors...
#1Rhys Anderson (U of T: University of Toronto)H-Index: 3
#2Fudong Wang (U of T: University of Toronto)H-Index: 2
Last. Joseph H. Thywissen (U of T: University of Toronto)H-Index: 27
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: We measure the conductivity of neutral fermions in a cubic optical lattice. Using in situ fluorescence microscopy, we observe the alternating current resultant from a single-frequency uniform force applied by displacement of a weak harmonic trapping potential. In the linear response regime, a neutral-particle analog of Ohm's law gives the conductivity as the ratio of total current to force. For various lattice depths, temperatures, interaction strengths, and fillings, we measure both real and ...
Source
#1Rhys AndersonH-Index: 3
#2Fudong WangH-Index: 2
Last. Joseph H. ThywissenH-Index: 27
view all 7 authors...
#1Vijin VenuH-Index: 2
#2Rhys AndersonH-Index: 3
Last. Joseph H. ThywissenH-Index: 27
view all 7 authors...
#1Rhys AndersonH-Index: 3
#2Fudong WangH-Index: 2
Last. Joseph H. ThywissenH-Index: 27
view all 7 authors...
We measure the conductivity of neutral fermions in a cubic optical lattice. A uniform force is applied at a single frequency by periodic displacement of the trapping potential, and the current response is observed though the global displacement of atoms. In the linear response regime, the steady-state ratio between current and force gives the ac conductivity. The tensor properties of the conductivity reveal temporal and spatial symmetries of the sample. Similarly to "optical" conductivity common...
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