Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions
| Autor: | Augusto Smerzi, Jan C. Heip, Manuel Gessner, Fabian Wolf, Chunyan Shi, Luca Pezzè, Klemens Hammerer, Marius Schulte, Piet O. Schmidt |
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| Přispěvatelé: | Laboratoire de Physique Théorique de l'ENS (LPTENS), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Atomic Physics (physics.atom-ph) Science squeezed states spectroscopy entanglement oscillations force noise mass vacuum General Physics and Astronomy FOS: Physical sciences 02 engineering and technology Quantum metrology General Biochemistry Genetics and Molecular Biology Article Physics - Atomic Physics Fock space 03 medical and health sciences Fock state Vacuum energy Quantum state Physics::Atomic Physics lcsh:Science Quantum Motional Fock states Dewey Decimal Classification::500 | Naturwissenschaften Physics Condensed Matter::Quantum Gases Quantum Physics Multidisciplinary Quantum limit Quantum sensor Quantum noise quantum noise Atomic and molecular interactions with photons General Chemistry 021001 nanoscience & nanotechnology [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph] 030104 developmental biology lcsh:Q ddc:500 Atomic physics 0210 nano-technology Quantum Physics (quant-ph) |
| Zdroj: | Nature Communications 10 (2019), Nr. 1 Nature Commun. Nature Commun., 2019, 10 (1), pp.2929. ⟨10.1038/s41467-019-10576-4⟩ Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019) Nature Communications Nature communications 10 (2019): 2929–2929. doi:10.1038/s41467-019-10576-4 info:cnr-pdr/source/autori:Wolf, Fabian; Shi, Chunyan; Heip, Jan C.; Gessner, Manuel; Pezze, Luca; Smerzi, Augusto; Schulte, Marius; Hammerer, Klemens; Schmidt, Piet O./titolo:Motional Fock states for quantum-enhanced amplitude and phase measurements with trapped ions/doi:10.1038%2Fs41467-019-10576-4/rivista:Nature communications/anno:2019/pagina_da:2929/pagina_a:2929/intervallo_pagine:2929–2929/volume:10 |
| Popis: | The quantum noise of the vacuum limits the achievable sensitivity of quantum sensors. In non-classical measurement schemes the noise can be reduced to overcome this limitation. However, schemes based on squeezed or Schrödinger cat states require alignment of the relative phase between the measured interaction and the non-classical quantum state. Here we present two measurement schemes on a trapped ion prepared in a motional Fock state for displacement and frequency metrology that are insensitive to this phase. The achieved statistical uncertainty is below the standard quantum limit set by quantum vacuum fluctuations, enabling applications in spectroscopy and mass measurements. Quantum metrology allows surpassing the standard quantum limit, but methods relying on squeezing require to know the orientation of the squeezed quadrature with respect to the signal. Here, instead, the authors propose a phase-insensitive Fock-state-based protocol, and demonstrate it using trapped ions. |
| Databáze: | OpenAIRE |
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