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SUMMARY:The Hong-Ou-Mandel effect with massive particles - Raphael Lopes (
 Institut Optique\, France)
DTSTART:20140725T100000Z
DTEND:20140725T110000Z
UID:TALK53519@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:The Hong-Ou-Mandel effect [1] is a demonstration of quantum in
 terference between pairs of indistinguishable bosons [2]. It is one of the
  milestone experiments in quantum optics and is used nowadays to character
 ize single photon sources and linear optics set-ups. In this talk\, I will
  present our first realization of the Hong-Ou-Mandel experiment with massi
 ve particles. A Bose-Einstein condensate of metastable helium placed in a 
 moving 1D optical lattice emits pairs of atoms in two quantum-correlated b
 eams [3\,4]. We then redirect the pairs towards the two input ports of a B
 ragg beam splitter and measure the density-density correlation of the two 
 output ports. By varying the spatial overlap of the two beams on the beam 
 splitter\, we are able to tune and reveal the indistinguishable nature of 
 the atoms.\n\n\n[1] C. K. Hong et al.\, Phys. Rev. Lett. 59\, 2044 (1987)\
 n[2] R. J. Lewis-Swan & K. V. Kheruntsyan\,  Nature Communications 5\, 375
 2\n(2014)\n[3] M. Bonneau et al. \, Phys. Rev. A 87\, 061603(R)\, (2013)\n
 [4] K. Kheruntsyan et al.\, Phys. Rev. Lett. 108\, 260401 (2012)
LOCATION:Rutherford building\, Seminar Room B
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