论文标题
使用机械量子传感器搜索大量中微子
Searches for massive neutrinos with mechanical quantum sensors
论文作者
论文摘要
现在，量子光学机械的开发允许在量子状态下控制和测量具有fermtogram质量的机械传感器。如果机械元件包含经历核衰减的同位素，则测量衰减后传感器的后坐力可以重建所有发射颗粒的总动量，包括任何可能逃脱传统检测器中检测的中性颗粒。例如，对于弱核衰减，可以逐个事件重建发射的中微子的动量。我们提出了这样一个概念，即在标准量子限制附近以灵敏度运行的单个纳米尺度的，光学上的悬浮传感器可以在Kev-Mev质量范围内搜索较重的无菌中微子，其灵敏度显着超出了现有约束。我们还评论了机械传感器在量子状态中运行良好的可能性最终可能达到提供对光中微子状态质量的绝对测量所需的敏感性。
The development of quantum optomechanics now allows mechanical sensors with femtogram masses to be controlled and measured in the quantum regime. If the mechanical element contains isotopes that undergo nuclear decay, measuring the recoil of the sensor following the decay allows reconstruction of the total momentum of all emitted particles, including any neutral particles that may escape detection in traditional detectors. As an example, for weak nuclear decays the momentum of the emitted neutrino can be reconstructed on an event-by-event basis. We present the concept that a single nanometer-scale, optically levitated sensor operated with sensitivity near the standard quantum limit can search for heavy sterile neutrinos in the keV-MeV mass range with sensitivity significantly beyond existing constraints. We also comment on the possibility that mechanical sensors operated well into the quantum regime might ultimately reach the sensitivities required to provide an absolute measurement of the mass of the light neutrino states.
