Browsing Research publications by Author "Burnett, K."
Now showing items 1-5 of 5
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Characterisation of the dynamical quantum state of a zero temperature Bose–Einstein condensate
Rogel-Salazar, J.; Choi, S.; New, G. H. C.; Burnett, K. (2002-07-01)We describe the quantum state of a Bose–Einstein condensate at zero temperature. By evaluating theQ-function we show that the ground state of Bose–Einstein condensate under the Hartree approximation is squeezed.We find ... -
Correlated pair excitations in Bose Einstein condensates in the presence of a Raman coupling
Rogel-Salazar, J.; New, G. H. C.; Burnett, K. (2003-04-01)We show that it is possible to determine the existence of correlated pairs produced in a down-conversion process within an atomic Bose–Einstein condensate in a systematic manner. This is achieved by measuring the competition ... -
Methods of quantum field theory for trapped Bose–Einstein condensates
Rogel-Salazar, J.; Choi, S.; New, G. H. C.; Burnett, K. (2004)In this tutorial we present an introduction to some theoretical methods of quantum field theory applied to the description of a trapped Bose–Einstein condensate. First of all, we give a brief account of the main characteristics ... -
Squeezing and entanglement in quasiparticle excitations of trapped Bose-Einstein condensates
Rogel-Salazar, J.; New, G. H. C.; Choi, S.; Burnett, K. (2002)We estimate the amount of temperature-dependent squeezing and entanglement in the collective excitations of trapped Bose-Einstein condensates. We also demonstrate an alternative method of temperature measurement for ... -
Squeezing and temperature measurement in Bose-Einstein condensates
Rogel-Salazar, J.; New, G. H. C.; Choi, S.; Burnett, K. (2001)In this paper we review recent developments in the theory of quasi-particle coupling in trapped Bose–Einstein condensates. We discuss prospects for observing squeezed quasi-particles in finite-temperature condensates.