.png){kind=icon}
Return
Atomic clock locking with Bayesian quantum parameter estimation: Scheme and experiment
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevApplied.22.044058.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Atomic clocks are crucial for science and technology, but their sensitivity is often restricted by the standard quantum limit. To surpass this limit, correlations between particles or interrogation times must be leveraged. Although the sensitivity can be enhanced to the Heisenberg limit using quantum entanglement, it remains unclear whether the scaling of sensitivity with total interrogation time can achieve the Heisenberg scaling. Here, we design an adaptive Bayesian quantum frequency estimation protocol that approaches the Heisenberg scaling and experimentally demonstrate its validity with a cold-atom coherent-population-trapping (CPT) clock. Further, we achieve high-precision closed-loop locking of the cold-atom CPT clock by utilizing our Bayesian quantum frequency estimation protocol. In comparison to the conventional proportional-integral-differential locking, our Bayesian locking scheme not only yields an improvement of 5.1(4) dB in fractional frequency stability, but also exhibits better robustness against technical noises. Our findings not only provide a high-precision approach to lock atomic clocks, but also hold promising applications in various interferometry-based quantum sensors, such as quantum magnetometers and atomic interferometers.
Keywords:
ENTANGLEMENT
STABILITY
CONTRAST
TIMES
Journal
IF:
4.4
Papers:
7.1K
Citations:
2.8W
Organization
Cited Papers
ShareSaveOne-pot preparation of piperazines by regioselective ring-opening of non-activated arylaziridines
PREAI
ShareSaveHigh-dynamic-range magnetometry with a single nuclear spin in diamond.png)
NATURE NANOTECHNOLOGY
NATURE NANOTECHNOLOGYIF34.9
PREAI
ShareSaveAdaptive Bayesian algorithm for achieving a desired magneto-sensitive transitionOPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAIShareSavePotential biomarkers of bortezomib activity in mantle cell lymphoma from the phase 2 PINNACLE trial
PREAI
ShareSaveBayesian estimation for quantum sensing in the absence of single-shot detectionPHYSICAL REVIEW B
OAAI
PHYSICAL REVIEW BIF3.7
OAAIShareSaveShareSaveShareSave
View more