Transport Properties in a Mott-like State of Molecules

N. Syassen*, D. M. Bauer, T. Volz, M. Lettner, D. Dietze, S. Dürr, G. Rempe

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review


Ultracold gases in optical lattices are of great interest, because these systems bear a great potential for applications in quantum simulations and quantum information processing, in particular when using particles with a long-range dipole-dipole interaction, such as polar molecules. In an previous paper, the authors showed the preparation of a Mott-like state of molecules. The molecules are produced from an atomic Mott insulator with a density profile chosen such that the central region of the gas contains two atoms per lattice site. A Feshbach resonance is used to associate the atom pairs to molecules. Remaining atoms can be removed with laser light. In this paper, the transport properties in the Mott-like state is studied. A molecule can tunnel with an amplitude Jm to an adjacent site. If there is already another molecule at that site the molecules can collide inelastically, leading to loss of both molecules from the sample. This loss occurs with a rate coefficient Gamma which is typically much faster than Jm/planck. The fast on-site loss leads to a suppression of tunneling. Loss from the initial state effectively occurs with a rate Gammaeff prop Jm 2/Gamma . This effect is studied experimentally at different lattice depths and the results are compared with theoretical predictions.
Original languageEnglish
Title of host publicationEuropean Conference on Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007.
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages1
ISBN (Print)1424409306, 9781424409303
Publication statusPublished - 2007
Event2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, CLEO - Munich, Germany
Duration: 17 Jun 200722 Jun 2007


Other2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, CLEO


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