论文标题
高精度，量子增强的重量法
High Precision, Quantum-Enhanced Gravimetry with a Bose-Einstein Condensate
论文作者
论文摘要
我们表明，Bose-Einstein冷凝物（BEC）的固有大原子间相互作用可以增强高精度冷原子重量表的灵敏度，超过射击量极限（SNL）。通过详细的数值模拟，我们证明了我们的方案可产生自旋方态，差异低于SNL的差异，并且在SNL以下2至5次之间的绝对重力测量敏感性在$ 10^4 $ $ 10^4 $和$ 10^6 $之间的ATOM ATOM数字之间可实现。我们的方案对于相位扩散，不完美的原子计数以及原子数和激光强度的射击变化是可靠的。在当前的实验室中，我们的建议是可以立即实现的，因为它只需要对现有的最新实验进行少量修改，并且不需要额外的指导潜力或光腔。
We show that the inherently large interatomic interactions of a Bose-Einstein condensate (BEC) can enhance the sensitivity of a high precision cold-atom gravimeter beyond the shot-noise limit (SNL). Through detailed numerical simulation, we demonstrate that our scheme produces spin-squeezed states with variances up to 14 dB below the SNL, and that absolute gravimetry measurement sensitivities between 2 and 5 times below the SNL are achievable with BECs between $10^4$ and $10^6$ in atom number. Our scheme is robust to phase diffusion, imperfect atom counting, and shot-to-shot variations in atom number and laser intensity. Our proposal is immediately achievable in current laboratories, since it needs only a small modification to existing state-of-the-art experiments and does not require additional guiding potentials or optical cavities.
