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BEC to the future
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Barcelona Quantum Optics Theory
PhD ICFO Armand Niederberger, Christian
Trefzger, Ania Kubasiak, Sibylle
Braungardt Postdocs ICFO Ujjwal Sen, Aditi Sen
(De), Chiara Menotti, Jonas Larson, Jarek
Korbicz, Geza Toth, Mirta Rodriguez, Thomas
Schulte Ex-Hannoveraner Anna Sanpera,
Veronica Ahufinger (UAB), A. Kantian (Innsbruck),
M. Baranov (Amsterdam), Dagmar Bruß, T. Meyer
(Düsseldorf), A. Cojuhovschi, L. Santos
(Hannover), P. Pedri (Orsay), P. Öh-berg
(Glasgow), Z. Idziaszek (Trento), U.V. Poulsen
(Aarhus), J. Mompart (UAB), L. Sanchez-Palencia
(Orsay), B. Damski (Los Alamos), K. Eckert (UAB),
H. Fehrmann
Collaborations J. Arlt, W. Ertmer, E. Tiemann
(IQO), H-U. Everts (ITP), G. Birkl (Darmstadt),
G. Shlyapnikov, (Orsay), P. Julienne, S.
Kotochigova (NIST), J. Dziarmaga, J. Zakrzewski,
K. Sacha, U. Dorner, H.-P. Büchler, P. Zoller, W.
Dür, L. Hart-mann, M. Hein,H. Briegel, R. Blatt,
H. Häffner, (Innsbruck), D. Jaksch (Oxford), R.
Corbalán, G. Morigi (UAB), M. Pons (Bilbao), C.
Wunderlich (Dublin), Ch. Macchiavello (Pavia), M.
Guillermas, J. Mur-Petit, A. Polls (UB), M. Baig
(UAB), K. Sengstock, K. Bongs (Hamburg), J.I.
Cirac (Garching), A. Acín, Ll. Torner (ICFO), J.
Wehr (Tuscon), R. Blatt (Innsbruck), E. Polzik
(Kopenhagen), B. Gromek (Lódz), L Zawitkowski, K.
Rzazewski (Warsaw), N. Barberan, J.-I. Lattore
(UB),
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Outline

• Assumptions

• Creating vortices via phase imprinting

• Creating BEC cocktails via trap shaking

• Two component BEC in random Raman field
• Breaking the continuous symmetry
• Disorder induced order
• Control of the relative phase

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Assumptions

• Assumption 1 we have a magnetic trap

• Assumption II we have some, but not too much
  of optical access.

• Assumptopn III we have control over magnetic
  fields

• Assumption IV we have access to two components
• (pseudo-spin ½)

• Assumption V BEC to the future will be more
  possibilities

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Creating vortices via phase imprinting
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Creating vortices via phase imprinting


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Controlling vortices via phase imprinting


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Controlling vortices via phase imprinting


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Controlling vortices via phase imprinting


Twisted photons Gabriel Molina-Terriza, Juan P.
Torres Lluis Torner
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Artwork Beata Wehr, Entanglement percolation
A. Acín, J. I. Cirac, and M. Lewenstein,
Quantum Entangle- ment Percolation, available
on-line in Nature Physics since 25.02.2007
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BEC cocktails via trap shaking
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BEC cocktails via trap shaking (Daiquiri)


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BEC cocktails via trap shaking (Mojitos)


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Two component BEC in random Raman field
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Random field induced order


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Random field induced order


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Random field induced order


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CONCLUSIONS (The Tragedy of Hamlet, by
Shakespeare)

• There are more thing in heaven and earth,
  Horatio, than are dreamt of in your philosophy.

Wow!!!

• See Ultracold atoms in optical lattices
  Mimicking condensed matter
• and beyond, M. Lewenstein, A. Sanpera, V.
  Ahufinger, B. Damski,
• A. Sen (De) and U. Sen, 120 p., over 700
  refs., cond-mat/06006771