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51132000032木蟲(chóng) (初入文壇)
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[求助]
光學(xué)專業(yè)翻譯求助
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Optical lattice clocks with extremely stable frequency are possible when many atoms are interrogated simultaneously, but this precision may come at the cost of systematic inaccuracy resulting from atomic interactions. Density-dependent frequency shifts can occur even in a clock that uses fermionic atoms if they are subject to inhomogeneous optical excitation. However, sufficiently strong interactions can suppress collisional shifts in lattice sites containing more than one atom. We demonstrated the effectiveness of this approach with a strontium lattice clock by reducing both the collisional frequency shift and its uncertainty to the level of 10−17. This result eliminates the compromise between precision and accuracy in a many-particle system; both will continue to improve as the number of particles increases. |
金蟲(chóng) (正式寫(xiě)手)
當(dāng)部分原子被同步診斷時(shí),頻率極其穩(wěn)定的光晶格鐘是可能存在的,但是由于原子間的相互作用,它會(huì)導(dǎo)致系統(tǒng)性的不精確。在不均勻光激發(fā)的情況下,即使應(yīng)用費(fèi)米原子的光晶格鐘,密度依賴的頻率也會(huì)發(fā)生變化。然而,充分的強(qiáng)相互作用能夠抑制在包含多于一個(gè)原子晶格位點(diǎn)的碰撞變化。通過(guò)減少鍶晶格鐘的碰撞頻率變化和它在10-17水平中的不確定性,我們證實(shí)了這種方法的有效性。這個(gè)結(jié)果忽略了多粒子系統(tǒng)的精度和準(zhǔn)確性的損失,但隨著粒子數(shù)量的增長(zhǎng),兩者精度均會(huì)有所提高 |

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