Acta Physica Sinica, Volume. 68, Issue 4, 043702-1(2019)
Fig. 1. (a) The ultracold fermions are trapped in a quasi-one-dimensional background optical lattice along the cavity axis . These fermions are pumped by two circular-polarized transverse (along ) lasers and the cavity mode is driven by a linear-polarized longitudinal (along ) laser. (b) the atomic energy levels and their transition. See main text for the corresponding transition processes and the definition of the labels. (a)超冷费米气沿着腔轴 方向被俘获在准一维背景光学晶格中, 费米气被两束圆偏振的横向(沿着 方向)抽运激光驱动, 腔模由一束线偏振的纵向(沿着 方向)驱动光驱动; (b)费米子的能级跃迁图, 图中相关的跃迁过程和符号的定义见正文
Fig. 2. (a) The cavity field
for systems in different fillings with
. The plotted parameters are chosen as
,
,
,
, and
. (b) the cavity field
for systems in different fillings with
. The plotted parameters are chosen as
,
,
,
, and
. We consider a lattice of sites 80 with different fillings.
a)蓝失谐的情况
, 光场
在不同的晶格填充下随耦合强度
的变化. 图中其他参数的选择:
,
,
,
和
; (b)红失谐的情况
, 光场
在不同的晶格填充下随耦合强度
的变化. 图中其它参数的选择:
,
,
,
和
. 我们考虑的具有80个格点的晶格对应不同的填充, 其中
Fig. 3. The spin structure factors
for systems in different fillings: (a)
; (b)
; (c)
(The plotted parameters are the same as those in
Fig. 4. The spin structure factors
for systems in different fillings: (a)
; (b)
; (c)
(The plotted parameters are the same as those in
Fig. 5. (a) The phase diagram in the
plane for the system with blue-detuned atomic detuning (M, AF-SR, and FM-SR correspond to metallic phase, antiferromagnetic superradiant phase, and ferromagnetic superradiant phase, respectively. The plotted parameters are the same as those in
Get Citation
Copy Citation Text
Yan-Lin Feng, Jing-Tao Fan, Gang Chen, Suo-Tang Jia.
Received: Nov. 1, 2018
Accepted: --
Published Online: Sep. 16, 2020
The Author Email: