Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices

Kim Georg Lind Pedersen; Brian Møller Andersen; Georg Morten Bruun; Olav Fredrik Syljuåsen; Anders Søndberg Sørensen

doi:10.1103/PhysRevA.85.053642

Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices

Kim Georg Lind Pedersen, Brian Møller Andersen, Georg Morten Bruun, Olav Fredrik Syljuåsen, Anders Søndberg Sørensen

1 Citation (Scopus)

Abstract

We suggest a simple experimental method for probing antiferromagnetic spin correlations of two-component Fermi gases in optical lattices. The method relies on a spin selective Raman transition to excite atoms of one spin species to their first excited vibrational mode where the tunneling is large. The resulting difference in the tunneling dynamics of the two spin species can then be exploited, to reveal the spin correlations by measuring the number of doubly occupied lattice sites at a later time. We perform quantum Monte Carlo simulations of the spin system and solve the optical lattice dynamics numerically to show how the timed probe can be used to identify antiferromagnetic spin correlations in optical lattices.

Original language	English
Journal	Physical Review A (Atomic, Molecular and Optical Physics)
Volume	85
Issue number	5
Pages (from-to)	053642
Number of pages	5
ISSN	2469-9926
DOIs	https://doi.org/10.1103/PhysRevA.85.053642
Publication status	Published - 29 May 2012

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title = "Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices",

abstract = "We suggest a simple experimental method for probing antiferromagnetic spin correlations of two-component Fermi gases in optical lattices. The method relies on a spin selective Raman transition to excite atoms of one spin species to their first excited vibrational mode where the tunneling is large. The resulting difference in the tunneling dynamics of the two spin species can then be exploited, to reveal the spin correlations by measuring the number of doubly occupied lattice sites at a later time. We perform quantum Monte Carlo simulations of the spin system and solve the optical lattice dynamics numerically to show how the timed probe can be used to identify antiferromagnetic spin correlations in optical lattices.",

author = "Pedersen, {Kim Georg Lind} and Andersen, {Brian M{\o}ller} and Bruun, {Georg Morten} and Sylju{\aa}sen, {Olav Fredrik} and S{\o}rensen, {Anders S{\o}ndberg}",

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T1 - Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices

AU - Pedersen, Kim Georg Lind

AU - Andersen, Brian Møller

AU - Bruun, Georg Morten

AU - Syljuåsen, Olav Fredrik

AU - Sørensen, Anders Søndberg

PY - 2012/5/29

Y1 - 2012/5/29

N2 - We suggest a simple experimental method for probing antiferromagnetic spin correlations of two-component Fermi gases in optical lattices. The method relies on a spin selective Raman transition to excite atoms of one spin species to their first excited vibrational mode where the tunneling is large. The resulting difference in the tunneling dynamics of the two spin species can then be exploited, to reveal the spin correlations by measuring the number of doubly occupied lattice sites at a later time. We perform quantum Monte Carlo simulations of the spin system and solve the optical lattice dynamics numerically to show how the timed probe can be used to identify antiferromagnetic spin correlations in optical lattices.

AB - We suggest a simple experimental method for probing antiferromagnetic spin correlations of two-component Fermi gases in optical lattices. The method relies on a spin selective Raman transition to excite atoms of one spin species to their first excited vibrational mode where the tunneling is large. The resulting difference in the tunneling dynamics of the two spin species can then be exploited, to reveal the spin correlations by measuring the number of doubly occupied lattice sites at a later time. We perform quantum Monte Carlo simulations of the spin system and solve the optical lattice dynamics numerically to show how the timed probe can be used to identify antiferromagnetic spin correlations in optical lattices.

U2 - 10.1103/PhysRevA.85.053642

DO - 10.1103/PhysRevA.85.053642

M3 - Journal article

SN - 2469-9926

VL - 85

SP - 053642

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

IS - 5

ER -

Inducing spin-dependent tunneling to probe magnetic correlations in optical lattices

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