Spatial coherence of a strongly interacting Bose gas in the trimerized kagome lattice

被引：9

作者：

Barter, Thomas H. ^{[1
]}

Leung, Tsz-Him ^{[1
]}

Okano, Masayuki ^{[1
]}

Block, Maxwell ^{[1
]}

Yao, Norman Y. ^{[1
,2
]}

Stamper-Kurn, Dan M. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 01期

关键词：

Bosons;

D O I：

10.1103/PhysRevA.101.011601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We produce a trimerized kagome lattice for ultracold atoms using an optical superlattice formed by overlaying triangular lattices generated with two colors of light at a 2:1 wavelength ratio. Adjusting the depth of each lattice tunes the strong intratrimer (J) and weak intertrimer (J') tunneling energies, and also the on-site interaction energy U. Two different trimerization patterns are distinguished using matter-wave diffraction. We characterize the coherence of a strongly interacting Bose gas in this lattice, observing persistent nearest-neighbor spatial coherence in the large U/J' limit, and that such coherence displays asymmetry between the strongly and the weakly coupled bonds.

引用

页数：5

共 25 条

[1]

Aidoudi FH, 2011, NAT CHEM, V3, P801, DOI [10.1038/NCHEM.1129, 10.1038/nchem.1129]

[2] Ultracold quantum gases in triangular optical lattices [J].

Becker, C. ;

Soltan-Panahi, P. ;

Kronjaeger, J. ;

Doescher, S. ;

Bongs, K. ;

Sengstock, K. .

NEW JOURNAL OF PHYSICS, 2010, 12

[3]

Buonsante P, 2005, PHYS REV A, V72, DOI [10.1103/PhysRevA.72.031602, 10.1103/PhysRevLettA.72.031602]

[4] Fractional Mott insulator-to-superfluid transition of Bose-Hubbard model in a trimerized Kagome optical lattice [J].

Chen, Qi-Hui ;

Li, Peng ;

Su, Haibin .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2016, 28 (25)

[5]

Dai HN, 2017, NAT PHYS, V13, P1195, DOI [10.1038/NPHYS4243, 10.1038/nphys4243]

[6] Atomic fermi gas in the trimerized kagome lattice at 2/3 filling [J].

Damski, B ;

Everts, HU ;

Honecker, A ;

Fehrmann, H ;

Santos, L ;

Lewenstein, M .

PHYSICAL REVIEW LETTERS, 2005, 95 (06)

[7] Quantum gases in trimerized kagome lattices [J].

Damski, B ;

Fehrmann, H ;

Everts, HU ;

Baranov, M ;

Santos, L ;

Lewenstein, M .

PHYSICAL REVIEW A, 2005, 72 (05)

[8] Phase coherence of an atomic Mott insulator -: art. no. 050404 [J].

Gerbier, F ;

Widera, A ;

Fölling, S ;

Mandel, O ;

Gericke, T ;

Bloch, I .

PHYSICAL REVIEW LETTERS, 2005, 95 (05)

[9] Expansion of a Quantum Gas Released from an Optical Lattice [J].

Gerbier, F. ;

Trotzky, S. ;

Foelling, S. ;

Schnorrberger, U. ;

Thompson, J. D. ;

Widera, A. ;

Bloch, I. ;

Pollet, L. ;

Troyer, M. ;

Capogrosso-Sansone, B. ;

Prokof'ev, N. V. ;

Svistunov, B. V. .

PHYSICAL REVIEW LETTERS, 2008, 101 (15)

[10] Short-Range Quantum Magnetism of Ultracold Fermions in an Optical Lattice [J].

Greif, Daniel ;

Uehlinger, Thomas ;

Jotzu, Gregor ;

Tarruell, Leticia ;

Esslinger, Tilman .

SCIENCE, 2013, 340 (6138) :1307-1310

← 1 2 3 →