GOSSAMER SUPERFLUID AND ANTIFERROMAGNETIC STATE OF COLD ATOMS IN OPTICAL LATTICES

被引：0

作者：

Yu, Hong-Yi ^{[1
]}

Sun, Fa-Di ^{[1
]}

Ji, An-Chun ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[2] Capital Normal Univ, Dept Phys, Ctr Theoret Phys, Beijing 100048, Peoples R China

来源：

MODERN PHYSICS LETTERS B | 2010年 / 24卷 / 23期

基金：

美国国家科学基金会;

关键词：

Cold atom; optical lattice; Gossamer superfluid; antiferromagnetism; CONTROLLED COLLISIONS; MOTT INSULATOR; FERMI GAS; SUPERCONDUCTORS; ENTANGLEMENT;

D O I：

10.1142/S0217984910024833

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a scheme to simulate the tJU model and investigate the quantum phase transitions using cold atoms confined in a two-dimensional optical lattice. By adjusting the parameters of external laser fields, we find a phase transition from antiferromagnetic phase to Gossamer superfluid. The Gossamer superfluid has a d-wave or mixed d- and s-wave symmetry, depending on the hopping parameters which can be adjusted by tuning the laser field. Experimental protocol to observe these new phenomena for future experiments has also been briefly discussed.

引用

页码：2377 / 2386

页数：10

共 30 条

[1] Probing many-body states of ultracold atoms via noise correlations [J].

Altman, E ;

Demler, E ;

Lukin, MD .

PHYSICAL REVIEW A, 2004, 70 (01) :013603-1

[2] Electrodynamics of high-Tc superconductors [J].

Basov, DN ;

Timusk, T .

REVIEWS OF MODERN PHYSICS, 2005, 77 (02) :721-779

[3] Evidence for superfluidity of ultracold fermions in an optical lattice [J].

Chin, J. K. ;

Miller, D. E. ;

Liu, Y. ;

Stan, C. ;

Setiawan, W. ;

Sanner, C. ;

Xu, K. ;

Ketterle, W. .

NATURE, 2006, 443 (7114) :961-964

[4] CORRELATED ELECTRONS IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

DAGOTTO, E .

REVIEWS OF MODERN PHYSICS, 1994, 66 (03) :763-840

[5] Detecting correlation functions of ultracold atoms through Fourier sampling of time-of-flight images [J].

Duan, LM .

PHYSICAL REVIEW LETTERS, 2006, 96 (10)

[6] Controlling spin exchange interactions of ultracold atoms in optical lattices [J].

Duan, LM ;

Demler, E ;

Lukin, MD .

PHYSICAL REVIEW LETTERS, 2003, 91 (09)

[7] Theory of Gossamer and resonating valence bond superconductivity [J].

Gan, JY ;

Zhang, FC ;

Su, ZB .

PHYSICAL REVIEW B, 2005, 71 (01)

[8] Gossamer superconductivity near antiferromagnetic mott insulator in layered organic conductors [J].

Gan, JY ;

Chen, Y ;

Su, ZB ;

Zhang, FC .

PHYSICAL REVIEW LETTERS, 2005, 94 (06)

[9] Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms [J].

Greiner, M ;

Mandel, O ;

Esslinger, T ;

Hänsch, TW ;

Bloch, I .

NATURE, 2002, 415 (6867) :39-44

[10] Fault-tolerant dissipative preparation of atomic quantum registers with fermions [J].

Griessner, A ;

Daley, AJ ;

Jaksch, D ;

Zoller, P .

PHYSICAL REVIEW A, 2005, 72 (03)

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