# Rotation sensing at the ultimate limit

@article{ZGoldberg2021RotationSA, title={Rotation sensing at the ultimate limit}, author={Aaron Z Goldberg and Andrei B Klimov and Gerd Leuchs and Luis L S{\'a}nchez-Soto}, journal={Journal of Physics: Photonics}, year={2021}, volume={3} }

Conventional classical sensors are approaching their maximum sensitivity levels in many areas. Yet these levels are still far from the ultimate limits dictated by quantum mechanics. Quantum sensors promise a substantial step ahead by taking advantage of the salient sensitivity of quantum states to the environment. Here, we focus on sensing rotations, a topic of broad application. By resorting to the basic tools of estimation theory, we derive states that achieve the ultimate sensitivities in…

## 7 Citations

Quantum limits to polarization measurement of classical light

- Physics
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Polarization of light is one of the fundamental concepts in optics. There are many ways to measure and characterise this feature of light but at the fundamental level it is quantum mechanics that…

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It is shown that, if the information is encoded in a unitary transformation, the authors can naturally choose the weight matrix as the metric tensor linked to the geometry of the underlying algebra su(n), with applications in numerous fields.

Quantum Polarimetry

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Improving sum uncertainty relations with the quantum Fisher information

- Materials SciencePhysical Review Research
- 2022

Shao-Hen Chiew1, 2, 3, 4 and Manuel Gessner1, 5, ∗ 1Laboratoire Kastler Brossel, ENS-Université PSL, CNRS, Sorbonne Université, Collège de France, 24 Rue Lhomond, 75005, Paris, France 2Department of…

Random Majorana Constellations

- Physics
- 2021

A. Z. Goldberg,1 J. L. Romero,2 Á. S. Sanz,2 A. B. Klimov,3 G. Leuchs,4, 5, 6 and L. L. Sánchez-Soto2, 4 1National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada…

Symmetric multiqudit states: Stars, entanglement, and rotosensors

- PhysicsPhysical Review A
- 2021

A constellation of N = d − 1 Majorana stars represents an arbitrary pure quantum state of dimension d or a permutation-symmetric state of a system consisting of n qubits. We generalize the latter…

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