Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:2605.02872

Precision gravimetry via harnessing interaction-induced resonances in optical lattices

Hassan Manshouri, Moslem Zarei, Mehdi Abdi, Yasser Omar, Sougato Bose, Abolfazl Bayat

quant-phcond-mat.str-elSubmitted May 4, 2026• Announced May 5, 2026• 0 citations
v1 · May 4, 2026v2 · May 7, 2026
arXivHTMLPDF

Abstract

By confining a Bose-Einstein condensate in a vertical lattice subjected to a gravitational potential, we analyze the quantum Fisher information to determine its scaling with respect to time, system size and particle number. Our results reveal that in the localized phase, on-site interactions $U$ amplify the quantum Fisher information by a factor with respect to resonance condition $U=mh$ where $U$ is factor of gradient field amplitude $h$. This precision enhancement can be employed in gravitational acceleration measurements with a finite number of particles trapped in optical lattices.

Related papers

Tilt-induced localization in interacting Bose-Einstein condensates for quantum sensing

Argha Debnath, Mariusz Gajda, Debraj Rakshit

We investigate localization transitions in interacting Bose-Einstein condensates (BECs) confined in tilted optical lattices, focusing on both the continuum limit accessed via shallow lattice depths and the tight-binding limit realized in the deep lattice regime. Utilizing the Gross-Pitaevskii equation (GPE) and the many-body Bose-Hubbard model, we analyze the scaling behavior of localization indicators, such as the root mean square width and fidelity susceptibility, as a function of the applied tilt. Our results reveal clear signatures of a localization-delocalization transition driven by the linear potential, with scaling properties that characterize criticality even in the presence of interactions within the GPE description. Despite the single-mode nature of the condensate wavefunction, we demonstrate that it can effectively probe quantum criticality. Building on this, we propose the use of interacting BECs in tilted lattices as a platform for quantum critical sensing, where the condensate wavefunction serves both as a sensitive probe of localization and a practical resource for quantum-enhanced metrology. This approach opens new avenues for precision gradient sensing based on localization phenomena in bosonic systems.

arXiv:2506.06173•Physical Review A•Mar 23, 2026•0 citations

Study of surface potentials using resonant tunnelling of cold atoms in optical lattices

Vladyslav V Ivanov

We study the feasibility of precision measurements of surface potentials at micrometre distances using resonant tunnelling of cold atoms trapped in vertical optical lattices. A modulation of an amplitude of the lattice potential induces atomic tunnelling among the lattice sites. The resonant modulation frequency corresponds to a difference of potential energy between lattice sites, which is defined by an external force, i.e. gravity. The vicinity of the surface alters the external potentials, and hence the resonant frequency. Application of this method allows the accurate study of Casimir-type potentials and improvement of the present experimental validity of the Newtonian gravitational potential at a distance range of 5–30 μm.

arXiv:1211.0571•Journal of Physics B Atomic Molecular and Optical Physics•Sep 18, 2012•5 citations

Lattice-Trapped Atom Interferometry with a Bose-Einstein condensate: Observation and Control of Interactions

Emmett Hough, Tahiyat Rahman, Forest Tschirhart +1 more

Precision interferometry with atomic wavepackets confined in a one-dimensional optical lattice is an emergent paradigm in quantum sensing of forces and fields, with applications in gravimetry, accelerometry, geophysics, and fundamental physics tests. We report on the realization of a lattice-trapped interferometer where the two arms are sourced from a weakly-interacting ytterbium Bose-Einstein condensate, coherently split and trapped by pulsed optical standing waves before recombination. We directly observe atomic interactions through contrast changes and phase shifts of the interferometer. By changing either the atom number or the sample volume to vary the density, we demonstrate control over interactions and optimize interferometer performance. Our observations are effectively captured by a mean-field theoretical model of the system. This work experimentally probes the boundary where improved performance from source brightening through higher phase space density transitions into a regime beyond single-atom physics in lattice-trapped atom interferometry, and opens a door to incorporating many-body effects for metrological advances in such platforms.

cond-mat.quant-gasCross-listedarXiv:2605.27777•May 28, 2026•0 citations

Interaction Between Gravitational Waves and Trapped Bose–Einstein Condensates

Alessio Perodi, Luca Salasnich

Inspired by recent proposals for detecting gravitational waves by using Bose–Einstein condensates (BECs), we investigated the interplay between these two phenomena. A gravitational wave induces a phase shift in the fidelity amplitude of the many-body quantum state. We investigated the enhancement of the phase shift in the case of Bose condensates confined by an anisotropic harmonic potential, considering both ideal and interacting BECs.

arXiv:2411.15874•Physics•Dec 5, 2024•0 citations

Precision Measurement of Gravity with Cold Atoms in an Optical Lattice and Comparison with a Classical Gravimeter

N. Poli, F.-Y. Wang, Marco G. Tarallo +3 more

We report on a precision measurement of gravitational acceleration using ultracold strontium atoms confined in an amplitude-modulated vertical optical lattice. An uncertainty Δg/g ≈ 10(-7) is reached by measuring at the 5th harmonic of the Bloch frequency. The value obtained with this microscopic quantum system is consistent with the one measured with a classical gravimeter. Using lattice modulation to prepare the atomic sample, we also achieve high visibility of Bloch oscillations for ∼ 20 s. These results can be of relevance for testing gravitational redshift and Newtonian law at micrometer scale.

arXiv:1010.2033•Physical Review Letters•Jan 18, 2011•221 citations

Bloch oscillations with a metastable helium Bose-Einstein condensate

Rudolf F.H.J. van der Beek, O. Onishchenko, W. Vassen +2 more

We have observed Bloch oscillations of a ${}^{4}{\text{He}}^{*}$ Bose-Einstein condensate in an optical lattice at 1557.3 nm. Due to its low mass, metastable helium was efficiently accelerated orders of magnitude faster than demonstrated with other atoms. In a horizontal lattice, we could transfer a total of $800\ensuremath{\hbar}k$ of momentum by shuttling the atomic cloud back and forth 50 times between the $4\ensuremath{\hbar}k$ and $\ensuremath{-}4\ensuremath{\hbar}k$ momentum states with an efficiency of over 99% per Bloch cycle. In a vertical lattice, gravity-induced Bloch oscillations were demonstrated, from which the local gravitational acceleration was derived with a statistical uncertainty of $4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. A clear advantage of ${\text{He}}^{*}$ over other atoms is that it can be detected with a microchannel plate detector with near unity efficiency, and this enabled observation of Bloch oscillations up to 12 s even though the number of atoms decreased by three orders of magnitude. These results establish ${\text{He}}^{*}$ as a promising candidate for future precision measurements with atom interferometry.

Physical Review A•Dec 21, 2020•1 citation
By confining a Bose-Einstein condensate in a vertical lattice subjected to a gravitational potential, we analyze the quantum Fisher information to determine its scaling with respect to time, system size and particle number. Our results reveal that in the localized phase, on-site interactions UUU amplify the quantum Fisher information by a factor with respect to resonance condition U=mhU=mhU=mh where UUU is factor of gradient field amplitude hhh. This precision enhancement can be employed in gravitational acceleration measurements with a finite number of particles trapped in optical lattices.
We investigate localization transitions in interacting Bose-Einstein condensates (BECs) confined in tilted optical lattices, focusing on both the continuum limit accessed via shallow lattice depths and the tight-binding limit realized in the deep lattice regime. Utilizing the Gross-Pitaevskii equation (GPE) and the many-body Bose-Hubbard model, we analyze the scaling behavior of localization indicators, such as the root mean square width and fidelity susceptibility, as a function of the applied tilt. Our results reveal clear signatures of a localization-delocalization transition driven by the linear potential, with scaling properties that characterize criticality even in the presence of interactions within the GPE description. Despite the single-mode nature of the condensate wavefunction, we demonstrate that it can effectively probe quantum criticality. Building on this, we propose the use of interacting BECs in tilted lattices as a platform for quantum critical sensing, where the condensate wavefunction serves both as a sensitive probe of localization and a practical resource for quantum-enhanced metrology. This approach opens new avenues for precision gradient sensing based on localization phenomena in bosonic systems.
We study the feasibility of precision measurements of surface potentials at micrometre distances using resonant tunnelling of cold atoms trapped in vertical optical lattices. A modulation of an amplitude of the lattice potential induces atomic tunnelling among the lattice sites. The resonant modulation frequency corresponds to a difference of potential energy between lattice sites, which is defined by an external force, i.e. gravity. The vicinity of the surface alters the external potentials, and hence the resonant frequency. Application of this method allows the accurate study of Casimir-type potentials and improvement of the present experimental validity of the Newtonian gravitational potential at a distance range of 5–30 μm.
Precision interferometry with atomic wavepackets confined in a one-dimensional optical lattice is an emergent paradigm in quantum sensing of forces and fields, with applications in gravimetry, accelerometry, geophysics, and fundamental physics tests. We report on the realization of a lattice-trapped interferometer where the two arms are sourced from a weakly-interacting ytterbium Bose-Einstein condensate, coherently split and trapped by pulsed optical standing waves before recombination. We directly observe atomic interactions through contrast changes and phase shifts of the interferometer. By changing either the atom number or the sample volume to vary the density, we demonstrate control over interactions and optimize interferometer performance. Our observations are effectively captured by a mean-field theoretical model of the system. This work experimentally probes the boundary where improved performance from source brightening through higher phase space density transitions into a regime beyond single-atom physics in lattice-trapped atom interferometry, and opens a door to incorporating many-body effects for metrological advances in such platforms.
We report on a precision measurement of gravitational acceleration using ultracold strontium atoms confined in an amplitude-modulated vertical optical lattice. An uncertainty Δg/g ≈ 10(-7) is reached by measuring at the 5th harmonic of the Bloch frequency. The value obtained with this microscopic quantum system is consistent with the one measured with a classical gravimeter. Using lattice modulation to prepare the atomic sample, we also achieve high visibility of Bloch oscillations for ∼ 20 s. These results can be of relevance for testing gravitational redshift and Newtonian law at micrometer scale.
We have observed Bloch oscillations of a 4He∗{}^{4}{\text{He}}^{*}4He∗ Bose-Einstein condensate in an optical lattice at 1557.3 nm. Due to its low mass, metastable helium was efficiently accelerated orders of magnitude faster than demonstrated with other atoms. In a horizontal lattice, we could transfer a total of $800\ensuremath{\hbar}k$ of momentum by shuttling the atomic cloud back and forth 50 times between the $4\ensuremath{\hbar}k$ and $\ensuremath{-}4\ensuremath{\hbar}k$ momentum states with an efficiency of over 99% per Bloch cycle. In a vertical lattice, gravity-induced Bloch oscillations were demonstrated, from which the local gravitational acceleration was derived with a statistical uncertainty of $4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. A clear advantage of He∗{\text{He}}^{*}He∗ over other atoms is that it can be detected with a microchannel plate detector with near unity efficiency, and this enabled observation of Bloch oscillations up to 12 s even though the number of atoms decreased by three orders of magnitude. These results establish He∗{\text{He}}^{*}He∗ as a promising candidate for future precision measurements with atom interferometry.