论文标题
短的Bragg脉冲光谱法
Short Bragg pulse spectroscopy for a paraxial fluids of light
论文作者
论文摘要
我们在光线的光液中实施了布拉格光谱。用空间光调制器通过波前塑形将短布拉格脉冲的类似物印刷在光子流体上。我们测量抛物线单粒子状态以及线性声子制度的分散关系和证据，即使对于非常弱的相互作用的光子和低声速也是如此。最后，我们报告了对静态结构因子$ s（k）$的测量值，并证明了成对相关的激发的存在，在光线降临液中间接揭示了量子消耗。
We implement Bragg spectroscopy in a paraxial fluid of light. Analogues of short Bragg pulses are imprinted on a photon fluid by wavefront shaping using a spatial light modulator. We measure the dispersion relation and evidence a parabolic single-particle regime as well as a linear phonon regime even for very weakly interacting photons and low sound velocity. Finally, we report a measurement of the static structure factor, $S(k)$, and we demonstrate the presence of pair-correlated excitations, revealing indirectly the quantum depletion in a paraxial fluid of light.
