Gersema Philipp, Voges Kai K, Meyer Zum Alten Borgloh Mara, Koch Leon, Hartmann Torsten, Zenesini Alessandro, Ospelkaus Silke, Lin Junyu, He Junyu, Wang Dajun
Institut für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover, Germany.
INO-CNR BEC Center, Dipartimento di Fisica, Università di Trento and TIFPA-INFN, 38123 Povo, Italy.
Phys Rev Lett. 2021 Oct 15;127(16):163401. doi: 10.1103/PhysRevLett.127.163401.
We probe photoinduced loss for chemically stable bosonic ^{23}Na^{87}Rb and ^{23}Na^{39}K molecules in chopped optical dipole traps, where the molecules spend a significant time in the dark. We expect the effective two-body decay to be significantly suppressed due to the small expected complex lifetimes of about 13 and 6 μs for ^{23}Na^{87}Rb and ^{23}Na^{39}K, respectively. However, instead we do not observe any suppression of the two-body loss in parameter ranges where large loss suppressions are expected. We believe these unexpected results are most probably due to drastic underestimation of the complex lifetime by at least 1-2 orders of magnitude.
我们探究了化学稳定的玻色子(^{23}Na^{87}Rb)和(^{23}Na^{39}K)分子在斩波光偶极阱中的光致损失，分子在阱中会有相当长的时间处于黑暗状态。由于预计(^{23}Na^{87}Rb)和(^{23}Na^{39}K)的复合寿命分别约为13微秒和6微秒，比较短，我们预期有效两体衰变会得到显著抑制。然而，相反地，在预期会有大幅损失抑制的参数范围内，我们并未观察到两体损失有任何抑制。我们认为这些意外结果很可能是由于复合寿命被严重低估了至少1 - 2个数量级。
