非線性相互作用誘導(dǎo)下光腔中超冷原子的新奇量子相變
發(fā)布時(shí)間:2018-08-07 14:43
【摘要】:Dicke模型是描述N個(gè)二能級(jí)原子與單模腔場(chǎng)集體耦合的系統(tǒng)。本文在標(biāo)準(zhǔn)Dicke模型的基礎(chǔ)上引入原子-光非線性相互作用,使用自旋相干態(tài)變分方法從理論上給出基態(tài)能量泛函,并且在實(shí)驗(yàn)參數(shù)下通過可調(diào)的非線性原子-光相互作用給出了宏觀多粒子量子態(tài)的豐富結(jié)構(gòu)。本文主要呈現(xiàn)出藍(lán)失諧和紅失諧下原子數(shù)反轉(zhuǎn)態(tài)、雙穩(wěn)的正常相、共存的正常-超輻射相等豐富的基態(tài)特性。
[Abstract]:The Dicke model is a system that describes the collective coupling of N two level atoms with a single mode cavity field. In this paper, the atom-optical nonlinear interaction is introduced on the basis of the standard Dicke model, and the ground state energy functional is given theoretically by using the spin coherent state variational method. The rich structure of the macroscopic multi-particle quantum states is obtained by the adjustable nonlinear atom-optical interaction under the experimental parameters. In this paper, the atomic number inversion states, the bistable normal phases, and the coexisting normal-superradiance properties of the ground state are mainly shown under blue detuning and red detuning.
【作者單位】: 山西大學(xué)理論物理研究所;
【基金】:國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):11404198;11275118;91430109;61505100) 山西省高等學(xué)校科技創(chuàng)新項(xiàng)目(批準(zhǔn)號(hào):2014102) 山西大學(xué)科研啟動(dòng)金(批準(zhǔn)號(hào):011151801004);山西大學(xué)本科生科研訓(xùn)練項(xiàng)目(批準(zhǔn)號(hào):2017015304) 國(guó)家基礎(chǔ)科學(xué)人才培養(yǎng)基金(批準(zhǔn)號(hào):J1103210)
【分類號(hào)】:O469
[Abstract]:The Dicke model is a system that describes the collective coupling of N two level atoms with a single mode cavity field. In this paper, the atom-optical nonlinear interaction is introduced on the basis of the standard Dicke model, and the ground state energy functional is given theoretically by using the spin coherent state variational method. The rich structure of the macroscopic multi-particle quantum states is obtained by the adjustable nonlinear atom-optical interaction under the experimental parameters. In this paper, the atomic number inversion states, the bistable normal phases, and the coexisting normal-superradiance properties of the ground state are mainly shown under blue detuning and red detuning.
【作者單位】: 山西大學(xué)理論物理研究所;
【基金】:國(guó)家自然科學(xué)基金(批準(zhǔn)號(hào):11404198;11275118;91430109;61505100) 山西省高等學(xué)校科技創(chuàng)新項(xiàng)目(批準(zhǔn)號(hào):2014102) 山西大學(xué)科研啟動(dòng)金(批準(zhǔn)號(hào):011151801004);山西大學(xué)本科生科研訓(xùn)練項(xiàng)目(批準(zhǔn)號(hào):2017015304) 國(guó)家基礎(chǔ)科學(xué)人才培養(yǎng)基金(批準(zhǔn)號(hào):J1103210)
【分類號(hào)】:O469
【相似文獻(xiàn)】
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1 董雷;蘭朝鳳;楊德森;時(shí)勝國(guó);李思純;;大振幅波非線性相互作用的譜分解法研究[J];哈爾濱工程大學(xué)學(xué)報(bào);2010年04期
2 李銳鋒;試析非線性相互作用在系統(tǒng)演化中的地位和作用[J];系統(tǒng)辯證學(xué)學(xué)報(bào);1997年04期
3 任玉鳳;協(xié)同學(xué)理論對(duì)非線性相互作用的方法論分析[J];內(nèi)蒙古大學(xué)學(xué)報(bào)(人文社會(huì)科學(xué)版);1998年06期
4 肖齊;王s,
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