Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals

doi:10.1126/science.abi5226

GSTDTAP > 气候变化

DOI	10.1126/science.abi5226
	Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals
	Kevin A. Gilmore; Matthew Affolter; Robert J. Lewis-Swan; Diego Barberena; Elena Jordan; Ana Maria Rey; John J. Bollinger
	2021-08-06
发表期刊	Science
出版年	2021
英文摘要	Harnessing quantum mechanical effects is expected to provide an advantage over classical sensing technology. By entangling the center-of-mass motional state of approximately 150 ions trapped in a two-dimensional Coulomb crystal with their collective spin state, Gilmore et al. demonstrate a quantum-enhanced measurement sensitivity of displacement and electric field. Such enhanced sensitivity could, for instance, find application in probing proposed weak interactions between dark matter and normal matter, as well as enhancing gravitational wave detection. Science , abi5226, this issue p. [673][1] Fully controllable ultracold atomic systems are creating opportunities for quantum sensing, yet demonstrating a quantum advantage in useful applications by harnessing entanglement remains a challenging task. Here, we realize a many-body quantum-enhanced sensor to detect displacements and electric fields using a crystal of ~150 trapped ions. The center-of-mass vibrational mode of the crystal serves as a high- Q mechanical oscillator, and the collective electronic spin serves as the measurement device. By entangling the oscillator and collective spin and controlling the coherent dynamics via a many-body echo, a displacement is mapped into a spin rotation while avoiding quantum back-action and thermal noise. We achieve a sensitivity to displacements of 8.8 ± 0.4 decibels below the standard quantum limit and a sensitivity for measuring electric fields of 240 ± 10 nanovolts per meter in 1 second. Feasible improvements should enable the use of trapped ions in searches for dark matter. [1]: /lookup/doi/10.1126/science.abi5226
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/335577
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Kevin A. Gilmore,Matthew Affolter,Robert J. Lewis-Swan,et al. Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals[J]. Science,2021.
APA	Kevin A. Gilmore.,Matthew Affolter.,Robert J. Lewis-Swan.,Diego Barberena.,Elena Jordan.,...&John J. Bollinger.(2021).Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals.Science.
MLA	Kevin A. Gilmore,et al."Quantum-enhanced sensing of displacements and electric fields with two-dimensional trapped-ion crystals".Science (2021).