University of Twente Student Theses


2D Box Traps for Bose-Einstein Condensates

Christenhusz, M.T.M. (2020) 2D Box Traps for Bose-Einstein Condensates.

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Abstract:Optical dipole traps (ODTs) are among the most commonly used traps for confining Bose-Einstein condensates (BECs). A high degree of control of light allows for the realisation of a great variety of trapping geometries. The use of blue-detuned optical traps for BECs has many advantages over using red-detuned traps. As a blue-detuned trap acts as a repulsive potential, one of its main advantages is its ability to expel hot (thermal) atoms that introduce noise in measurements. We form our trap by creating an optical lattice of two interfering blue-detuned beams, and trap atoms vertically the nodal lattice planes. Another blue-detuned beam is used to trap atoms in the horizontal plane. This allows for creation of nearly uniform traps, closely resembling a finite-potential square well. The lattice spacing is easily adjusted, which provides stronger vertical confinement, making the trap a 2D box trap for BECs.
Item Type:Essay (Master)
Faculty:TNW: Science and Technology
Subject:30 exact sciences in general, 33 physics
Programme:Applied Physics MSc (60436)
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