激子极化激元凝聚体中的二维亮孤子

黄轶凡; 梁兆新

doi:10.7498/aps.72.20230425

摘要

在非保守非线性系统中, 产生孤子的基本物理机理是系统的动能与非线性、以及增益与耗散达到双动力学平衡. 如何在该系统中产生稳定的自由高维孤子是目前孤子理论具有挑战性的前沿课题. 本文提出了一种在激子极化激元玻色-爱因斯坦凝聚体中实现二维自由亮孤子理论方案, 即通过时间周期调制相互作用以及增益与耗散双平衡的物理机理产生稳定的二维自由空间亮孤子. 为此, 首先通过拉格朗日量变分法得到了二维亮孤子参数的动力学方程, 得到其动力学稳定的参数空间. 其次, 数值模拟广义增益耗散Gross-Pitaveskii方程的含时演化, 验证了二维亮孤子的稳定性. 最后, 加入高斯噪声模拟真实实验环境, 发现在实验可观测的时间范围内, 二维亮孤子是稳定的. 本文的实验方案打开了在非保守系统中研究高维自由空间亮孤子的大门.

关键词:

Abstract

In non-conservative nonlinear systems, the basic physical mechanics of soliton generation is that the kinetic energy and nonlinear terms of the system, as well as the gain and dissipation terms reach a double dynamic balance. How to generate stable free high-dimensional solitons in such a system is currently a challenging topic in soliton theory. In this article, we propose a theoretical scheme for realizing two-dimensional free bright solitons in exciton-polariton Bose-Einstein condensates, which proposes a physical mechanism for generating stable two-dimensional free space bright solitons through time periodic modulation interactions and a dual balance between gain and dissipation. In this end, firstly, we obtain the dynamic equations of two-dimensional bright soliton parameters through the Lagrange variational method, and obtain its dynamically stable parameter space. Secondly, the evolution of the generalized dissipative Gross-Pitaveskii equation is numerically simulated to verify the stability of two-dimensional bright solitons. Finally, we add Gaussian noise to simulate a real experimental environment and find that two-dimensional bright solitons are also stable within the observable time range of the experiment. Our experimental scheme opens the door to the study of bright solitons in high-dimensional free space in non-conservative systems.

Keywords:

作者及机构信息

浙江师范大学物理系, 金华　321004

通信作者: 梁兆新, zhxliang@zjnu.edu.cn

基金项目: 浙江省自然科学基金重点项目(批准号: LZ21A040001)和国家自然科学基金(批准号: 12074344)资助的课题

Authors and contacts

Department of Physics, Zhejiang Normal University, Jinhua 321004, China

Corresponding author: Liang Zhao-Xin, zhxliang@zjnu.edu.cn

Funds: Project supported by the Key Program of the Natural Science Foundation of Zhejiang Province, China (Grant No. LZ21A040001) and the National Natural Science Foundation of China (Grant No. 12074344)

文章全文 : translate this paragraph

参考文献

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施引文献

图 1 峰值密度$\left|\psi\left(r=0\right)\right|^{2}$和单极矩$\left\langle r\right\rangle = \displaystyle\int r\left|\psi\right|^{2}\mathrm{d}\boldsymbol{r}$随时间t演化的图像　(a1), (a2) $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.271$; (b1), (b2) $\gamma_{{\rm{C}}}=0.70$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.484$; (c1), (c2) $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=2.60$, $P_{0}=1.142$. 周期振荡相互作用强度取为$g(t)= $$ -2\pi+ 8\pi\sin(\varOmega t)$, 含时演化的前段$t=0$—20, 逐渐打开热源极化子间的相互作用, 同时缓慢减弱径向约束势到零. 其他参数为$R=2.40$, $\omega=2.00$, $\varOmega=30$, $g_{{\rm{R}}}=0$

Fig. 1. Time evolution of the peak density $\left|\psi\left(r=0\right)\right|^{2}$ and the monopole moment $\left\langle r\right\rangle = \displaystyle\int r\left|\psi\right|^{2}\mathrm{d}\boldsymbol{r}$: (a1), (a2) $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.271$; (b1), (b2) $\gamma_{{\rm{C}}}=0.70$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.484$; (c1), (c2) $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=2.60$, $P_{0}=1.142$. The interaction $g(t)=-2\pi+8\pi\sin(\varOmega t)$ is switched on a little bit at a time while the radial confinement potential is switched off from $t=0$ to 20. Values of other parameters are $R=2.40$, $\omega=2.00$, $\varOmega=30$, $g_{{\rm{R}}}=0$

下载: 全尺寸图片幻灯片

图 2 图1(a)所描述系统中, 概率密度分布随时间演化的图像. 图中颜色明暗代表概率密度的大小, 颜色越亮表示对应的概率密度越大

Fig. 2. Time evolution of the the odds density distribution for the system depicted in Fig. 1(a). The brighter and darker colors in the figure represent the magnitude of the density, and the brighter color indicates the corresponding higher density

下载: 全尺寸图片幻灯片

图 3 考虑噪声的快热库极限下, 峰值密度$\left|\psi\left(r=0\right)\right|^{2}$(a)随时间演化图像和(b)概率密度分布图像. 周期振荡相互作用强度取为$g(t)=-2\pi+8\pi\sin(\varOmega t)$, 噪音强度为$D=0.01$, 其他参数为$R=2.40$, $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.274$, $\omega=2.00$, $\varOmega=30$, $g_{{\rm{R}}}=0$. 图中颜色明暗代表概率密度的大小, 颜色越亮表示对应的概率密度越大

Fig. 3. (a) Time evolution of the peak density $\left|\psi\left(r=0\right)\right|^{2}$ and (b) the density distribution in the limit of fast reservoir considering the noise. The interaction $g(t)=-2\pi+8\pi\sin(\varOmega t)$ is switched on a little bit at a time while the radial confinement potential is switched off from $t=0$ to 20. The noise intensity is $D=0.01$. Values of other parameters are $R=2.40$, $\gamma_{{\rm{C}}}=0.60$, $\gamma_{{\rm{R}}}=3.00$, $P_{0}=1.274$, $\omega=2.00$, $\varOmega=30$, $g_{{\rm{R}}}=0$. The brighter and darker colors in the figure represent the magnitude of the density, and the brighter color indicates the corresponding higher density

下载: 全尺寸图片幻灯片

图 4 根据演化耦合方程(4)和方程(5), 峰值密度$\left|\psi\left(r=0\right)\right|^{2}$和概率密度分布图像　(a1)快热库参数空间中峰值密度$\left|\psi\left(r=0\right)\right|^{2}$随时间演化的图像, $R=2.40$, $\gamma_{{\rm{R}}}=3.00$; (b1)在图(a1)基础上再加入强度为$D=0.01$的弱噪声; (c1), (d1)考虑噪声的快热库参数空间中的概率密度分布图; (a2)非快热库参数空间中峰值密度$\left|\psi\left(r=0\right)\right|^{2}$随时间演化的图像, $R=0.24$, $\gamma_{{\rm{R}}}=0.30$; (b2)在图(a2)基础上再加入强度为$D=0.01$的弱噪声; (c2), (d2)考虑噪声的非快热库参数空间中的分叉率密度分布图. 周期振荡相互作用强度取为$g(t)=-2\pi+8\pi\sin(\varOmega t)$, 在$t=30$时加入高斯白噪声, 其他参数为$\gamma_{{\rm{C}}}=0.60$, $P_{0}=1.265$, $\omega=2.20$, $\varOmega=30$, $g_{{\rm{R}}}=0$. 图中颜色明暗代表概率密度的大小, 颜色越亮表示对应的概率密度越大

Fig. 4. Time evolution of the peak density $\left|\psi\left(r=0\right)\right|^{2}$ and the monopole moment $\left\langle r\right\rangle =\int r\left|\psi\right|^{2}\mathrm{d}\boldsymbol{r}$ while evolving the coupled equations (4) and (5): (a1) Image of peak density $\left|\psi\left(r=0\right)\right|^{2}$ in the parameter space of fast reservoir with time evolution, $R=2.40$, $\gamma_{{\rm{R}}}=3.00$; (b1) adding a weak noise with intensity D=0.01 to panel (a1); (c1), (d1) image of density distribution in the parameter space of fast reservoir considering the noise; (a2) image of peak density $\left|\psi\left(r=0\right)\right|^{2}$ in the parameter space of non-fast reservoir with time evolution, $R=0.24$, $\gamma_{{\rm{R}}}=0.30$; (b2) adding a weak noise with intensity D = 0.01 to panel (a2); (c2), (d2) image of density distribution in the parameter space of non-fast reservoir considering the noise. The interaction $g(t)=-2\pi+8\pi\sin(\varOmega t)$ is switched on a little bit at a time while the radial confinement potential is switched off from $t=0$ to 20. Gaussian white noise is added at the moment $t=30$, and the other parameters are $\gamma_{{\rm{C}}}=0.60$, $P_{0}=1.265$, $\omega=2.20$, $\varOmega=30$, $g_{{\rm{R}}}=0$. The brighter and darker colors in the figure represent the magnitude of the density, and the brighter color indicates the corresponding higher density

下载: 全尺寸图片幻灯片

map

[1]	Saito H, Ueda M 2003 Phys. Rev. Lett. 90 040403 Google Scholar
[2]	Zhang Y C, Zhou Z W, Malomed B A, Pu H 2015 Phys. Rev. Lett. 115 253901 Google Scholar
[3]	Dalfovo F, Stringari S 1996 Phys. Rev. A 53 2477 Google Scholar
[4]	Carr L D, Clark C W 2006 Phys. Rev. Lett. 97 010403 Google Scholar
[5]	Kartashov Y V, Malomed B A, Torner L 2011 Rev. Mod. Phys. 83 247 Google Scholar
[6]	Maucher F, Henkel N, Saffman M, Królikowski W, Skupin S, Pohl T 2011 Phys. Rev. Lett. 106 170401 Google Scholar
[7]	Tikhonenkov I, Malomed B A, Vardi A 2008 Phys. Rev. Lett. 100 090406 Google Scholar
[8]	Kippenberg T J, Gaeta A L, Lipson M, Gorodetsky M L 2018 Science 361 567 Google Scholar
[9]	Smirnov L A, Smirnova D A, Ostrovskaya E A, Kivshar Y S 2014 Phys. Rev. B 89 235310 Google Scholar
[10]	Xu X R, Chen L, Zhang Z D, Liang Z X 2019 J. Phys. B 52 025303 Google Scholar
[11]	Jia C Y, Liang Z X 2020 Chin. Phys. Lett. 37 040502 Google Scholar
[12]	Jia C Y, Wu R K, Hu Y, Liu W M, Liang Z X 2021 Front. Phys. 9 805841 Google Scholar
[13]	Zhang Y L, Jia C Y, Liang Z X 2022 Chin. Phys. Lett. 39 020501 Google Scholar
[14]	Jia C Y, Liang Z X 2022 Entropy 24 1789 Google Scholar
[15]	余超凡, 梁国栋, 曹锡金 2008 57 4402 Google Scholar Yu C F, Liang G D, Cao X J 2008 Acta Phys. Sin. 57 4402 Google Scholar
[16]	陈礼元, 高超, 林机, 李慧军 2022 71 181101 Google Scholar Chen L Y, Gao C, Lin J, Li H J 2022 Acta Phys. Sin. 71 181101 Google Scholar
[17]	Kasprzak J, Richard M, Kundermann S, et al. 2006 Nature 443 409 Google Scholar
[18]	Balili R, Hartwell V, Snoke D, Pfeiffer L, West K 2007 Science 316 1007 Google Scholar
[19]	Deng H, Weihs G, Santori C, Bloch J, Yamamoto Y 2002 Science 298 199 Google Scholar
[20]	Carusotto I, Ciuti C 2013 Rev. Mod. Phys. 85 299 Google Scholar
[21]	Byrnes T, Kim N Y, Yamamoto Y 2014 Nat. Phys. 10 803 Google Scholar
[22]	Plumhof J D, Stöferle T, Mai L, Scherf U, Mahrt R F 2014 Nat. Mater. 13 247 Google Scholar
[23]	Su R, Ghosh S, Wang J, Liu S, Diederichs C, Liew T C H, Xiong Q H 2020 Nat. Phys. 16 301 Google Scholar
[24]	李峰, 熊启华 2022 物理 51 445 Google Scholar Li F, Xiong Q H 2022 Physics 51 445 Google Scholar
[25]	Sieberer L M, Buchhold M, Diehl S 2016 Rep. Prog. Phys. 79 096001 Google Scholar
[26]	Ciuti C, Schwendimann P, Quattropani A 2001 Phys. Rev. B 63 041303(R Google Scholar
[27]	Klass M, Flayac H, Amthor M, Savenko I G, Brodbeck S, Ala-Nissila T, Klembt S, Schneider C, Höfling S 2018 Phys. Rev. Lett. 120 017401 Google Scholar
[28]	Schneider C, Winkler K, Fraser M D, Kamp M, Yamamoto Y, Ostrovskaya E A, Höfling S 2016 Rep. Prog. Phys. 80 016503 Google Scholar
[29]	Shelykh I A, Kavokin A V, Rubo Y G, Liew T C H, Malpuech G 2010 Semicond. Sci. Technol. 25 013001 Google Scholar
[30]	Sanvitto D, Kéna-Cohen S 2016 Nat. Mater. 15 1061 Google Scholar
[31]	Takemura N, Trebaol S, Wouters M, Portella-Oberli M T, Deveaud B 2014 Nat. Phys. 10 500 Google Scholar
[32]	Sun Y, Yoon Y, Steger M, Liu G, Pfeiffer L N, West K, Snoke D W, Nelson K A 2017 Nat. Phys. 13 870 Google Scholar
[33]	Navadeh-Toupchi M, Takemura N, Anderson M D, Oberli D Y, Portella-Oberli M T 2019 Phys. Rev. Lett. 122 047402 Google Scholar
[34]	Lai C W, Kim N Y, Utsunomiya S, et al. 2007 Nature 450 529 Google Scholar
[35]	St-Jean P, Goblot V, Galopin E, Lemaître A, Ozawa T, Le Gratiet T, Sagnes I, Bloch J, Amo A 2017 Nat. Photonics 11 651 Google Scholar
[36]	Manni F, Lagoudakis K G, Pietka B, Fontanesi L, Wouters M, Savona V, André R, Deveaud-Plédran B 2011 Phys. Rev. Lett. 106 176401 Google Scholar
[37]	Thunert M, Janot A, Franke H, Sturm C, Michalsky T, Martín T, Viña L, Rosenow B, Grundmann M, Schmidt-Grund R 2016 Phys. Rev. B 93 064203 Google Scholar
[38]	Sala V G, Solnyshkov D D, Carusotto I, et al. 2015 Phys. Rev. X 5 011034 Google Scholar
[39]	Whittaker C E, Cancellieri E, Walker P M, et al. 2018 Phys. Rev. Lett. 120 097401 Google Scholar
[40]	Klembt S, Harder T H, Egorov O A, et al. 2018 Nature 562 552 Google Scholar
[41]	Lim H T, Togan E, Kroner M, Miguel-Sanchez J, Imamoğlu A 2017 Nat. Commun. 8 14540 Google Scholar
[42]	陈海军, 任元, 王华 2022 71 056701 Google Scholar Chen H J, Ren Y, Wang H 2022 Acta Phys. Sin. 71 056701 Google Scholar
[43]	郭慧, 王雅君, 王林雪, 张晓斐 2020 69 010302 Google Scholar Guo H, Wang Y J, Wang L X, Zhang X F 2020 Acta Phys. Sin. 69 010302 Google Scholar
[44]	Kivshar Y S, Królikowski W 1995 Opt. Commun. 114 353 Google Scholar
[45]	Frantzeskakis D J 2010 J. Phys. A: Math. Theor. 43 213001 Google Scholar
[46]	Tran P 1998 Phys. Rev. E 58 8049 Google Scholar

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激子极化激元凝聚体中的二维亮孤子