Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals.

  title={Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals.},
  author={Matthew Affolter and Kevin A. Gilmore and J. E. Jordan and John J. Bollinger},
  journal={Physical review. A},
  volume={102 5}
Trapped ions are sensitive detectors of weak forces and electric fields that excite ion motion. Here measurements of the center-of-mass motion of a trapped-ion crystal that are phase coherent with an applied weak external force are reported. These experiments are conducted far from the trap motional frequency on a two-dimensional trapped-ion crystal of approximately 100 ions, and determine the fundamental measurement imprecision of our protocol free from noise associated with the center-of-mass… 

Figures from this paper

Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals
A quantum-enhanced sensor is developed to detect weak motional displacements and electric fields using a crystal of ~150 trapped ions and achieves a sensitivity to displacements below the standard quantum limit and a sensitivity for measuring electric fields in 1 second.
Quantum Rabi interferometry of motion and radiation
The precise determination of a displacement of a mechanical oscillator or a microwave field in a predetermined direction in phase space can be carried out with trapped ions or superconducting
Dynamical Generation of Spin Squeezing in Ultracold Dipolar Molecules.
A bulk fermionic dipolar molecular gas in the quantum degenerate regime confined in a two-dimensional geometry is studied, and how the internal state structure can be exploited to realize time reversal and enhanced metrological sensing protocols is discussed.
Phonon-Laser Ultrasensitive Force Sensor
Zhichao Liu, 2 Yaqi Wei, 2 Liang Chen, 3, ∗ Ji Li, 2 Shuangqing Dai, 2 Fei Zhou, 3 and Mang Feng 2, 3, 4, † State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan


  • Rev. Lett. 118, 263602
  • 2017
Assessment of Rydberg atoms for wideband electric field sensing
Rydberg atoms have attracted significant interest recently as electric field sensors. In order to assess potential applications, detailed understanding of relevant figures of merit is necessary,
Continuous force and displacement measurement below the standard quantum limit
Quantum mechanics dictates that the precision of physical measurements must always comply with certain noise constraints. In the case of interferometric displacement measurements, these restrictions
Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions
A phase-insensitive Fock-state-based protocol for displacement and frequency metrology that is insensitive to the quantum noise of the vacuum, and is demonstrated using trapped ions.
Apesar da gestão de carreiras ser uma preocupação recente no quadro da gestão das relações de trabalho, é hoje evidente a crise em que se encontra a forma tradicional de abordagem desta problemática.
  • Rev. Lett. 122, 030501
  • 2019
  • Rev. A 99, 023409
  • 2019
  • Rev. Lett. 122, 053603
  • 2019
Quantum amplification of mechanical oscillator motion
It is shown that an additional displacement of a trapped atom results in amplification of the squeezing and a further improvement in the precision with which the displacement can be determined, which should be useful for a number of applications in metrology.