论文标题
量子增强的搜索暗物质斧头
A quantum-enhanced search for dark matter axions
论文作者
论文摘要
在暗物质轴搜索中，量子不确定性表现为基本噪声源，从而限制了用于检测的正交观察物的测量。我们使用真空挤压来规避搜索新粒子的量子极限。通过在挤压状态下准备一个微波频率电磁场，并且近乎毫无疑问地读出挤压正交的次数，我们将轴个体的搜索速率增加一倍，而轴个体对最近的理论预测有利的质量范围。我们在总计$ 16.96-17.12 $和$ 17.14-17.28 \spaceμ\ text {ev}/c^2 $g_γ上方$g_γ= 1.38 \ timesg_γγ^^text {ksvz} $ necorl in at 90 clace上。
In dark matter axion searches, quantum uncertainty manifests as a fundamental noise source, limiting the measurement of the quadrature observables used for detection. We use vacuum squeezing to circumvent the quantum limit in a search for a new particle. By preparing a microwave-frequency electromagnetic field in a squeezed state and near-noiselessly reading out only the squeezed quadrature, we double the search rate for axions over a mass range favored by recent theoretical projections. We observe no signature of dark matter axions in the combined $16.96-17.12$ and $17.14-17.28\spaceμ\text{eV}/c^2$ mass window for axion-photon couplings above $g_γ = 1.38\times g_γ^\text{KSVZ}$, reporting exclusion at the 90% level.
