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Lattice-Assisted Spectroscopy: A Generalized Scanning Tunneling Microscope for Ultracold Atoms
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Stockholm Univ, Stockholm, Sweden.
2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 16Article in journal (Refereed) PublishedText
Abstract [en]

We propose a scheme to measure the frequency-resolved local particle and hole spectra of any optical lattice-confined system of correlated ultracold atoms that offers single-site addressing and imaging, which is now an experimental reality. Combining perturbation theory and time-dependent density matrix renormalization group simulations, we quantitatively test and validate this approach of lattice-assisted spectroscopy on several one-dimensional example systems, such as the superfluid and Mott insulator, with and without a parabolic trap, and finally on edge states of the bosonic Su-Schrieffer-Heeger model. We highlight extensions of our basic scheme to obtain an even wider variety of interesting and important frequency resolved spectra.

Place, publisher, year, edition, pages
2015. Vol. 115, no 16
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:kth:diva-181986DOI: 10.1103/PhysRevLett.115.165301ISI: 000362908700010ScopusID: 2-s2.0-84945279205OAI: diva2:903208

QC 20160215

Available from: 2016-02-15 Created: 2016-02-11 Last updated: 2016-02-15Bibliographically approved

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Kantian, Adrian
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