Detection-resolution limits of large-momentum-transfer atom gravimetry

• URL: http://arxiv.org/abs/2607.28749v1
• Date: Thu, 30 Jul 2026 18:16:06 GMT
• Title: Detection-resolution limits of large-momentum-transfer atom gravimetry
• Abstract summary: Large momentum transfer (LMT) enhances the gravitational phase of a light-pulse atom interferometer by a factor $n$.<n> mirrorless operation with momentum-resolved detection can quadruple the phase-carrying quantum Fisher information.<n>We analyze this trade-off in a solvable model with instantaneous sensitivity $n$-photon pulses, a Gaussian source, and Gaussian detection blur.
• Score: 1.2633386045916446
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large momentum transfer (LMT) enhances the gravitational phase of a light-pulse atom interferometer by a factor $n$, while mirrorless operation with momentum-resolved detection can quadruple the phase-carrying quantum Fisher information. These gains compete in practice because the momentum-space fringe period scales as $1/n$, making the fringe signal increasingly vulnerable to finite detector resolution. We analyze this trade-off in a solvable model with instantaneous lossless $n$-photon pulses, a Gaussian source, and Gaussian detection blur, allowing continuous interpolation between Kasevich--Chu and mirrorless geometries. Closed-form expressions for the blurred output distributions and classical Fisher information are obtained, with a fringe-phase averaging approximation whose error is exponentially suppressed and agrees with numerical simulations at the $10^{-8}$ level. We find that mirrorless operation surpasses a conventional interferometer with the same momentum transfer only when $σ_p < 0.91\,m/(n k_0 T)$. Fringe-based readout exhibits an optimal momentum transfer $n^* \simeq 0.93\,m/(σ_p k_0 T)$ and a resolution-limited sensitivity floor $Δg \simeq 4.4\,σ_p/(mT\sqrt{N})$, independent of photon momentum. When this criterion is not satisfied, partial mirror asymmetry can recover part of the enhancement, whereas population-based readout remains insensitive to detector blur and ultimately favors the conventional sequence at sufficiently large $n$. Estimates for $^{87}$Rb sensors show that the mirrorless advantage is primarily restricted to short-baseline instruments.

Related papers

• On trace invariance and energy-dependent entanglement in muon decay [45.88028371034407]
  We revisit a proposed correction to the muon magnetic anomaly measurement.<n>We compare it with energy-binned scans reported by the Fermilab $g-2$ collaboration.
  arXiv  Detail & Related papers  (2026-08-19T12:06:54Z)
• Heralded Non-Gaussian Squeezed-State Inputs for Parity-Detection SU(1,1) Interferometry [1.3551878698295214]
  We compare photon subtraction, photon addition, and photon parity constraints as input-side heralding operations in a balanced SU (1,1) interferometer with parity detection.<n>We find a sharp boundary between conditional non-Gaussian enhancement and practically available precision under explicitly stated resource constraints.
  arXiv  Detail & Related papers  (2026-08-05T06:02:51Z)
• Distributed Phase Sensing with Multiphoton States in Optical Interferometry [0.0]
  We investigate interferometric phase-estimation using separable photon inputs that evolve into number-path entangled states through linear optical networks.<n>A simple analytical expression for the classical Fisher information at zero phase is derived for arbitrary $N$-photon states.<n>In the low photon-flux regime, vacuum fluctuations fundamentally limit local quadrature measurements, whereas nonlocal photon-number-resolving measurements exploit multiphoton interference to mitigate loss-induced sensitivity degradation.
  arXiv  Detail & Related papers  (2026-08-04T00:28:56Z)
• Time-Multiplexed Distributed Quantum Sensing [0.0]
  Heisenberg scaling has been extended from $1/N2$ to $1/(NM)2$ in distributed quantum sensing.<n>We show that exploiting entanglement across temporal modes via time-domain multiplexing enables a scaling advantage with respect to $R$.
  arXiv  Detail & Related papers  (2026-03-19T11:57:38Z)
• Ramsey correlation spectroscopy with phase cycling using a single quantum sensor [0.0]
  We present RESOLUTE, a protocol that overcomes limitations by combining Ramsey measurements with correlation spectroscopy.<n>We experimentally demonstrate an extension of the effective coherence time from $T* = 0.38,s$ to $Tp = 5.1,s$, surpassing Hahn Echo measurements.<n>These advancements provide enhanced sensitivity for single-molecule imaging and quantum sensing applications.
  arXiv  Detail & Related papers  (2026-03-05T19:59:24Z)
• Multiphoton Hong-Ou-Mandel Interference Enables Superresolution of Bright Thermal Sources [0.0]
  Scheme employs multiphoton interference with a reference single-photon Fock state at a beamsplitter.<n>Even-photon-number coincidences exhibit constant precision in the sub-Rayleigh regime.<n>Our scheme offers a robust alternative to non-invasive single-particle tracking and imaging of bright sources in nanoscopic chemical and biological systems.
  arXiv  Detail & Related papers  (2026-02-23T12:24:22Z)
• A saturation-absorption rubidium magnetometer with multilevel optical Bloch-equation modeling for intermediate-to-high fields [0.054175212412726444]
  We present SASHMAG, an atomic sensor designed for precision magnetic-field measurements.<n>The sensor operates in the hyperfine Paschen-Back regime, where the hyperfine and Zeeman interactions decouple.<n>To interpret the resulting spectra in this strongly field-dependent regime, we developed a comprehensive multilevel optical Bloch-equation model.
  arXiv  Detail & Related papers  (2026-01-14T03:29:40Z)
• Annual-modulation fingerprint of the axion wind induced sideband triplet in quantum dot spin qubit sensors [0.0]
  We propose a phase-coherent, narrowband magnetometer for searching couplings between axions or axion-like particles (ALPs) and electron spins.<n>With repeated Ramsey echo sequences and dispersive readout, the qubit precession response can be tracked with sub-Hz spectral resolution.<n>Our results indicate that spin-qubit magnetometry can achieve sensitivities approaching those suggested by astrophysical considerations.
  arXiv  Detail & Related papers  (2025-11-05T16:49:24Z)
• The quantum beam splitter with many partially indistinguishable photons: multiphotonic interference and asymptotic classical correspondence [44.99833362998488]
  We present the analysis of the quantum two-port interferometer in the $n rightarrow infty$ limit of $n$ partially indistinguishable photons. Our main result is that the output distribution is dominated by the $O(sqrtn)$ channels around a certain $j*$ that depends on the degree of indistinguishability. The form is essentially the doubly-humped semi-classical envelope of the distribution that would arise from $2 j*$ indistinguishable photons, and which reproduces the corresponding classical intensity distribution.
  arXiv  Detail & Related papers  (2023-12-28T01:48:26Z)
• Ancilla quantum measurements on interacting chains: Sensitivity of entanglement dynamics to the type and concentration of detectors [46.76612530830571]
  We consider a quantum many-body lattice system that is coupled to ancillary degrees of freedom (detectors'') We explore the dynamics of density and of entanglement entropy in the chain, for various values of $rho_a$ and $M$.
  arXiv  Detail & Related papers  (2023-11-21T21:41:11Z)
• Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
  A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins. These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field. We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
  arXiv  Detail & Related papers  (2023-05-10T12:59:07Z)
• Continuous dynamical decoupling of optical $^{171}$Yb$^{+}$ qudits with radiofrequency fields [45.04975285107723]
  We experimentally achieve a gain in the efficiency of realizing quantum algorithms with qudits. Our results are a step towards the realization of qudit-based algorithms using trapped ions.
  arXiv  Detail & Related papers  (2023-05-10T11:52:12Z)
• Analytic Signal Phase in $N-D$ by Linear Symmetry Tensor--fingerprint modeling [69.35569554213679]
  We show that the Analytic Signal phase, and its gradient have a hitherto unstudied discontinuity in $2-D $ and higher dimensions. This shortcoming can result in severe artifacts whereas the problem does not exist in $1-D $ signals. We suggest the use of Linear Symmetry phase, relying on more than one set of Gabor filters, but with a negligible computational add-on.
  arXiv  Detail & Related papers  (2020-05-16T21:17:26Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.