Atom interferometer as a freely falling clock for time-dilation measurements

• URL: http://arxiv.org/abs/2402.11065v1
• Date: Fri, 16 Feb 2024 20:38:03 GMT
• Title: Atom interferometer as a freely falling clock for time-dilation measurements
• Authors: Albert Roura
• Abstract summary: Light-pulse atom interferometers based on single-photon transitions are a promising tool for gravitational-wave detection in the mid-frequency band. We present a novel measurement scheme that enables their use as freely falling clocks directly measuring relativistic time-dilation effects.
• Score: 0.14188748936919127
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Light-pulse atom interferometers based on single-photon transitions are a promising tool for gravitational-wave detection in the mid-frequency band and the search for ultralight dark-matter fields. Here we present a novel measurement scheme that enables their use as freely falling clocks directly measuring relativistic time-dilation effects. The proposal is particularly timely because it can be implemented with no additional requirements in Fermilab's MAGIS-100 experiment or even in the 10-m prototypes that are expected to start operating very soon. This will allow the unprecedented measurement of gravitational time dilation in a local experiment with freely falling atoms, which is out of reach even for the best atomic-fountain clocks based on microwave transitions. The results are supported by a comprehensive treatment of relativistic effects in this kind of interferometers as well as a detailed analysis of the main systematic effects. Furthermore, the theoretical methods developed here constitute a valuable tool for modelling light-pulse atom interferometers based on single-photon transitions in general.

Related papers

• Finite Pulse-Time Effects in Long-Baseline Quantum Clock Interferometry [45.73541813564926]
  We study the interplay of the quantum center-of-mass $-$ that can become delocalized $-$ together with the internal clock transitions. We show at the example of a Gaussian laser beam that the proposed quantum-clock interferometers are stable against perturbations from varying optical fields.
  arXiv  Detail & Related papers  (2023-09-25T18:00:03Z)
• Optimal baseline exploitation in vertical dark-matter detectors based on atom interferometry [50.06952271801328]
  Several terrestrial detectors for gravitational waves and dark matter based on long-baseline atom interferometry are currently in the final planning stages or already under construction. We show that resonant-mode detectors based on multi-diamond fountain gradiometers achieve the optimal, shot-noise limited, sensitivity if their height constitutes 20% of the available baseline.
  arXiv  Detail & Related papers  (2023-09-08T08:38:24Z)
• Atomic diffraction from single-photon transitions in gravity and Standard-Model extensions [49.26431084736478]
  We study single-photon transitions, both magnetically-induced and direct ones, in gravity and Standard-Model extensions. We take into account relativistic effects like the coupling of internal to center-of-mass degrees of freedom, induced by the mass defect.
  arXiv  Detail & Related papers  (2023-09-05T08:51:42Z)
• A large-momentum-transfer matter-wave interferometer to measure the effect of gravity on positronium [0.0]
  A Mach-Zehnder matter-wave interferometer has been designed to operate with single-photon transitions. Within less than one year, the acquisition time is sufficient to achieve a 10% accuracy level in measuring positronium gravitational acceleration.
  arXiv  Detail & Related papers  (2023-03-21T12:29:33Z)
• Realizing spin squeezing with Rydberg interactions in a programmable optical clock [0.6376404422444008]
  We demonstrate spin squeezing in a neutral-atom optical clock based on a programmable array of interacting optical qubits. We observe a fractional stability of $1.087(1)times 10-15$ at one-second averaging time, which is 1.94(1) dB below the standard quantum limit. The realization of this spin-squeezing protocol in a programmable atom-array clock opens the door to a wide range of quantum-information inspired techniques.
  arXiv  Detail & Related papers  (2023-03-14T17:11:33Z)
• Decoherence from Long-Range Forces in Atom Interferometry [0.0]
  We study the effects on atomic coherence from hard-to-screen backgrounds due to baths of ambient particles with long-range forces. We find that these potential backgrounds are likely negligible for the next generation of interferometers.
  arXiv  Detail & Related papers  (2022-05-06T04:24:11Z)
• Universality-of-clock-rates test using atom interferometry with $T^{3}$ scaling [63.08516384181491]
  Atomic clocks generate delocalized quantum clocks. Tests of universality of clock rates (one facet of LPI) to atom interferometry generating delocalized quantum clocks proposed. Results extend our notion of time, detached from classical and localized philosophies.
  arXiv  Detail & Related papers  (2022-04-05T12:26:56Z)
• Probing quantum devices with radio-frequency reflectometry [68.48453061559003]
  Radio-frequency reflectometry can measure changes in impedance even when their duration is extremely short, down to a microsecond or less. Examples of reflectometry experiments include projective measurements of qubits and Majorana devices for quantum computing. This book aims to introduce the readers to the technique, to review the advances to date and to motivate new experiments in fast quantum device dynamics.
  arXiv  Detail & Related papers  (2022-02-21T20:14:21Z)
• Measuring gravitational time dilation with delocalized quantum superpositions [0.0]
  We present an interferometry scheme employing group-II-type atoms, such as Sr or Yb, capable of measuring the gravitational time dilation. The scheme relies on very simple atom optics for which high-diffraction efficiencies can be achieved with mild requirements on laser power. Remarkably, the recently commissioned VLBAI facility in Hannover, a 10-meter atomic fountain that can simultaneously operate Yb and Rb atoms, meets all the requirements for a successful experimental implementation.
  arXiv  Detail & Related papers  (2020-10-21T17:23:39Z)
• Proposal for an optical interferometric measurement of the gravitational red-shift with satellite systems [52.77024349608834]
  Einstein Equivalence Principle (EEP) underpins all metric theories of gravity. The iconic gravitational red-shift experiment places two fermionic systems, used as clocks, in different gravitational potentials. A fundamental point in the implementation of a satellite large-distance optical interferometric experiment is the suppression of the first-order Doppler effect. We propose a novel scheme to suppress it, by subtracting the phase-shifts measured in the one-way and in the two-way configuration between a ground station and a satellite.
  arXiv  Detail & Related papers  (2018-11-12T16:25:57Z)

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.