April 2009 - Vip-all.phys - maillist.au.dk

[vip-all] Ifa-Nyt uge 18
by Ruth Laursen 30 Apr '09

30 Apr '09

Bemærk: det er en samlet pdf fil. Vh ruth *************************** Ruth Laursen Head of Administration Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK- 8000 Aarhus C Telephone: 8942 3706 Mobile: 2338 2335 Office: 1522-212 e-mail: ruth(a)phys.au.dk

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[vip-all] AMO seminar today
by Nicolai Nygaard 30 Apr '09

30 Apr '09

Speaker: Uffe V. Poulsen (IFA) Title: Interaction of light with small atomic ensembles Time: Today, 15.15 Place: Fysisk Auditorium Abstract: Collective effects can significantly enhance the emission and absorption of light by an ensemble of two-level atoms. A well-known example is the so-called Dicke super-radiance occurring where excited atoms spontaneously emit light with an intensity scaling as the square of the number of atoms and a peaked angular distribution. In our work, we focus instead on a regime where only a single excitation is stored collectively in the atoms. We study numerically the emission of such an excitation as a photon. It turns out that under suitable conditions, this photon may also be emitted with a peaked angular distribution and we calculate the exact spatio-temporal mode function for various arrangements of the atoms. The phenomenon suggests realistic protocols for storing and retrieving a single photon from an atomic ensemble even without the use of a cavity, a task that is highly relevant for quantum information processing. Peter Staanum and Nicolai Nygaard

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[vip-all] afslutning af ferieår - tjek jeres saldo!!!!
by Ruth Laursen 28 Apr '09

28 Apr '09

Kære alle Ferieåret 2008/09 slutter den 30.4.2009, og allerede fra 1. maj kan det gamle ferieår afsluttes i systemet. Vil I tjekke om jeres feriesaldo er i overensstemmelse med det afholdte og tilgodehavende? Vi afslutter ferieåret i næste uge, og herefter er der IKKE muligheder for at foretage korrektioner. Henvendelser om feriesaldo kan ske til Lone Taulborg (eller undertegnede). Vh ruth *************************** Ruth Laursen Head of Administration Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK- 8000 Aarhus C Telephone: 8942 3706 Mobile: 2338 2335 Office: 1522-212 e-mail: ruth(a)phys.au.dk

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[vip-all] Symmetries/ Greiner and Müller
by Liv Vego 27 Apr '09

27 Apr '09

The following book is missing from the library: The book is requested, so if you know where it is, please return it to the library office Opstilling Monografier Greiner Titel Theoretical physics: text and exercise books Forfatter/ed. Greiner, Walter Müller, Berndt Impressum Berlin : Springer-Verlag, 1989-1993 Beskrivelse , Flere bind , ill. Vol. 2 : Symmetries / Walter Greiner, Berndt Müller -- --------------------------------------------------- Liv Vego Phone: +45 8942 3618/1111 Physics & Astronomy Library, Fax: +45 8612 0740 Department of Physics and Astronomy University of Aarhus, Ny Munkegade DK 8000 Aarhus C, Denmark, Email: livvego(a)phys.au.dk --------------------------------------------------- http://www.phys.au.dk/library/bibliotek-uk.shtm ---------------------------------------------------

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[vip-all] Fodboldturnering/Football tournament !
by Steen Brøndsted Nielsen 24 Apr '09

24 Apr '09

FODBOLDTURNERING Brief english version below. Vi har i gruppen snakket om, at det kunne være sjovt at afholde en fodboldturnering grupperne imellem hen over sommeren (maj-juni). Hvis jeres gruppe har lyst til at være med så kontakt enten Anne eller mig (senest 1. maj). Anne Holm og Steen Brøndsted Praktisk information: ? Det er 5 m/k hold (med udskiftere) ? Vi spiller 2 halvlege af 20 min ? Kampene vil blive afholdt på fredage med start kl. 16 ? Hvert hold melder tilbage med 2 farver som de kan stille op i. We would like to invite all of you to join us in a big football tournament this summer (May - June). If your group wants to participate, please tell either Anne or my self. Anne Holm og Steen Brøndsted

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[vip-all] IFA-NYT uge 17
by Ruth Laursen 24 Apr '09

24 Apr '09

Kære alle Husk: at det er en samlet PDF fil. Vh ruth *************************** Ruth Laursen Head of Administration Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK- 8000 Aarhus C Telephone: 8942 3706 Mobile: 2338 2335 Office: 1522-212 e-mail: ruth(a)phys.au.dk

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FW: f�llesm�de om uddannelser
by Ruth Laursen 22 Apr '09

22 Apr '09

Til orientering. Vh ruth -----Original Message----- From: Elsebeth Bisbo [mailto:bisbo@science.au.dk] Sent: 22. april 2009 16:21 To: institutsekr(a)science.au.dk; institutledere(a)science.au.dk Subject: fællesmøde om uddannelser Kære Institutter! Hermed link til hjemmesiden med invitation af alle ansatte og øvrige interesserede til fællesmøde om uddannelser - ny organisation og nye tiltag http://science.au.dk/nyheder-og-arrangementer/nyhed/article/faellesmoede-om- nye-uddannelser-onsdag-den-29-april-kl-1430-1600-i-soeauditoriet/ Vi håber, I vil gøre opmærksom på mødet. -- Med venlig hilsen Elsebeth Bisbo Fakultetssekretær Det Naturvidenskabelige Fakultet Aarhus Universitet Ny Munkegade, Bygn. 1521-219 DK-8000 Aarhus C. tel: 8942 3588 fax: 8942 3596 e-mail: bisbo(a)science.au.dk

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[vip-all] Varmt vand i morgen
by Ruth Laursen 22 Apr '09

22 Apr '09

I morgen torsdag er der lukket for det varme vand I tidsrummet: 7-11. Vh ruth *************************** Ruth Laursen Head of Administration Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK- 8000 Aarhus C Telephone: 8942 3706 Mobile: 2338 2335 Office: 1522-212 e-mail: ruth(a)phys.au.dk

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[vip-all] Merzbacher
by Liv Vego 20 Apr '09

20 Apr '09

The following book is missing from the library: The book is requested, so if you know where it is, please return it to the library office Opstilling Monografier Merzbacher Titel Quantum mechanics Forfatter/ed. Merzbacher, Eugen Udgave 2. ed. Impressum New York : John Wiley, 1970 Beskrivelse , 621 s. , ill. -- --------------------------------------------------- Liv Vego Phone: +45 8942 3618/1111 Physics & Astronomy Library, Fax: +45 8612 0740 Department of Physics and Astronomy University of Aarhus, Ny Munkegade DK 8000 Aarhus C, Denmark, Email: livvego(a)phys.au.dk --------------------------------------------------- http://www.phys.au.dk/library/bibliotek-uk.shtm ---------------------------------------------------

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[vip-all] LTC seminar today
by Nicolai Nygaard 17 Apr '09

17 Apr '09

Speaker: David Feder (University of Calgary) Title: Cooling ultracold bosons in optical lattices by quantum walks Time: Today, 11.15 Place: 1525-323 Abstract: Quantum walks are the quantum mechanical analogues of classical random walks, in which the walker simultaneously moves to all neighbouring sites of a graph at each step. These can lead to the fastest known quantum algorithms, much like random walks often optimize classical algorithms. I will discuss how one can modify quantum walks in order to perform a generalized Fourier transform. This idea will be extended to show how one could experimentally obtain the energy distribution of weakly interacting ultracold bosons in optical lattices, simply by allowing the gas to evolve in time within a suitably prepared lattice. The results are robust against imperfections in the implementation and particle interactions. In this way, it should be possible to directly cool bosons in optical lattices, using standard experimental techniques. Nicolai Nygaard Nicolai Nygaard Institut for Fysik og Astronomi Aarhus Universitet Ny Munkegade 120, Bygn. 1520 (kontor 634) 8000 Århus C Denmark Telephone: +45 89 42 36 80 Fax: +45 86 12 07 40 Email: nygaard(a)phys.au.dk Web: www.phys.au.dk/~nygaard

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