Quantum sensing of intermittent stochastic signals
Quantum sensing of intermittent stochastic signals
复制标题
间歇随机信号的量子传感
DOI：
10.1103/physreva.103.032419
复制
发表时间：
2021
影响因子：
2.9
通讯作者：
Haeffner, Hartmut
中科院分区：
文献类型：
--
作者：
Mouradian, Sara L.;Glikin, Neil;Megidish, Eli;Ellers, Kai-Isaak;Haeffner, Hartmut
现实的量子传感器面临着并行测量的传感器数量与整个系统的控制和读出保真度之间的权衡。我们研究传感器的数量和保真度如何影响对连续和间歇信号的灵敏度。对于连续信号，我们发现增加传感器数量总是可以恢复达到的灵敏度。然而，当信号是间歇性的时，需要更多的传感器来恢复使用一个完美的量子传感器可实现的灵敏度。我们还通过使用单个俘获离子传感器估计随机、间歇信号的频率分量，证明了在量子投影噪声极限下近乎统一的控制保真度和读数的重要性。量子传感历来关注于远离标准量子极限运行的大型传感器集合。本文提出的结果表明，这对于间歇信号的量子传感来说是不够的，并再次强调了本征态附近量子投影噪声的独特缩放的重要性。
Realistic quantum sensors face a trade-off between the number of sensors measured in parallel and the control and readout fidelityacross the ensemble. We investigate how the number of sensors and fidelity affect sensitivity to continuous and intermittent signals. For continuous signals, we find that increasing the number of sensors byforalways recovers the sensitivity achieved when. However, when the signal is intermittent, more sensors are needed to recover the sensitivity achievable with one perfect quantum sensor. We also demonstrate the importance of near-unity control fidelity and readout at the quantum projection noise limit by estimating the frequency components of a stochastic, intermittent signal with a single trapped ion sensor. Quantum sensing has historically focused on large ensembles of sensors operated far from the standard quantum limit. The results presented in this paper show that this is insufficient for quantum sensing of intermittent signals and reemphasizes the importance of the unique scaling of quantum projection noise near an eigenstate.
影响因子：
8.6
作者：
Lupo, Cosmo;Pirandola, Stefano
通讯作者：
Pirandola, Stefano
影响因子：
8.6
作者：
Donohue, J. M.;Ansari, V.;Silberhorn, C.
通讯作者：
Silberhorn, C.
影响因子：
64.8
作者：
Glenn, David R.;Bucher, Dominik B.;Walsworth, Ronald L.
通讯作者：
Walsworth, Ronald L.