论文标题
使用脉冲相互作用的玻色网凝结物的原子Fabry-Perot干涉仪
An atomic Fabry-Perot interferometer using a pulsed interacting Bose-Einstein condensate
论文作者
论文摘要
我们在数值上证明了与脉冲相互作用的bose-Einstein冷凝物（BEC）源通过双高斯屏障传输的原子fabry-perot共振。对于实验可行的参数选择，这些共振是可以观察到的，我们使用以前开发的分析模型来确定了在双矩形屏障系统上入射的平面物质波。通过模拟有效的一维毛 - 比塔维斯基方程，我们研究了原子数，散射长度和BEC动量宽度对谐振透射峰的影响。对于$^{85} $ rb原子源，当前可实验的动量宽度为$ 0.02 \ hbar k_0 $ [$ k_0 =2π/（780〜 \ text {nm}）$]，我们显示出合理的高对比度fabry pertast-pertot pertot prections $ atect pects $ contimpt $ atect pects $ atect pec pec $ atect $ a pec $ a） $ 10^5 $的$ S $ - 波散射长度$ a_s = \ pm 0.1a_0 $ [$ a_0 $是bohr radius]，c）c）与$ 10^3 $原子与$ a_s = \ pm 1.0a_0 $进行交互。我们的理论研究影响了与超电原子源的原子Fabry-Perot干涉仪的未来实验实现。
We numerically demonstrate atomic Fabry-Perot resonances for a pulsed interacting Bose-Einstein condensate (BEC) source transmitting through double Gaussian barriers. These resonances are observable for an experimentally-feasible parameter choice, which we determined using a previously-developed analytical model for a plane matter-wave incident on a double rectangular barrier system. By simulating an effective one-dimensional Gross-Pitaevskii equation, we investigate the effect of atom number, scattering length, and BEC momentum width on the resonant transmission peaks. For $^{85}$Rb atomic sources with the current experimentally-achievable momentum width of $0.02 \hbar k_0$ [$k_0 = 2π/(780~\text{nm})$], we show that reasonably high contrast Fabry-Perot resonant transmission peaks can be observed using a) non-interacting BECs of $10^5$ atoms, b) interacting BECs of $10^5$ atoms with $s$-wave scattering lengths $a_s=\pm 0.1a_0$ [$a_0$ is the Bohr radius], and c) interacting BECs of $10^3$ atoms with $a_s=\pm 1.0a_0$. Our theoretical investigation impacts any future experimental realisation of an atomic Fabry-Perot interferometer with an ultracold atomic source.
