Physically significant phase shifts in matter-wave interferometry

• URL: http://arxiv.org/abs/2008.05609v2
• Date: Wed, 10 Mar 2021 23:40:09 GMT
• Title: Physically significant phase shifts in matter-wave interferometry
• Authors: Chris Overstreet, Peter Asenbaum, and Mark A. Kasevich
• Abstract summary: In low-order potentials, a matter-wave interferometer with a single internal state provides the same information as a sum of position measurements of a classical test object. In high-order potentials, the interferometer phase becomes decoupled from the motion of the interferometer arms, and the phase contains information that cannot be obtained by any set of position measurements on the interferometer trajectory.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Many different formalisms exist for computing the phase of a matter-wave interferometer. However, it can be challenging to develop physical intuition about what a particular interferometer is actually measuring or about whether a given classical measurement provides equivalent information. Here we investigate the physical content of the interferometer phase through a series of thought experiments. In low-order potentials, a matter-wave interferometer with a single internal state provides the same information as a sum of position measurements of a classical test object. In high-order potentials, the interferometer phase becomes decoupled from the motion of the interferometer arms, and the phase contains information that cannot be obtained by any set of position measurements on the interferometer trajectory. This phase shift in a high-order potential fundamentally distinguishes matter-wave interferometers from classical measuring devices.

Related papers

• Feynman Diagrams for Matter Wave Interferometry [0.0]
  We introduce a new theoretical framework based on Feynman diagrams to compute phase shifts in matter wave interferometry. We apply the method to compute the response of matter wave interferometers to power law potentials and potentials with an arbitrary spatial dependence.
  arXiv  Detail & Related papers  (2024-07-16T07:26:19Z)
• Realizing a spatially correlated lattice interferometer [8.81055904289318]
  Atom interferometers provide a powerful tool for measuring physical constants and testifying fundamental physics with unprecedented precision. Here, we report on realizing a Ramsey-Bord'e interferometer of coherent matter waves dressed by a moving optical lattice in the gravity direction. Our findings agree well with theoretical simulations, paving the way for high-precision interferometry with ultracold atoms.
  arXiv  Detail & Related papers  (2024-06-24T17:54:03Z)
• Sensing Aharonov--Bohm phase using a multiply-orbiting-ion interferometer [0.0]
  This study introduces a novel approach to sensing of the Aharonov--Bohm phase, an ion matter-wave interferometer. The ion orbitals in the potential form Lissajous curves, causing the direction of ion rotation to reverse. The sensitivity to the Aharonov--Bohm phase in this study corresponds to a rotation sensitivity of approximately 300rad/s.
  arXiv  Detail & Related papers  (2024-03-15T02:59:12Z)
• Evolution of many-body systems under ancilla quantum measurements [58.720142291102135]
  We study the concept of implementing quantum measurements by coupling a many-body lattice system to an ancillary degree of freedom. We find evidence of a disentangling-entangling measurement-induced transition as was previously observed in more abstract models.
  arXiv  Detail & Related papers  (2023-03-13T13:06:40Z)
• Measurement-induced entanglement and teleportation on a noisy quantum processor [105.44548669906976]
  We investigate measurement-induced quantum information phases on up to 70 superconducting qubits. We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases. Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
  arXiv  Detail & Related papers  (2023-03-08T18:41:53Z)
• Quantum fluctuations in the small Fabry-Perot interferometer [77.34726150561087]
  We study the small, of the size of the order of the wavelength, interferometer with the main mode excited by a quantum field from a nano-LED or a laser. We find the field and the photon number fluctuation spectra inside and outside the interferometer. Results help the study, design, manufacture, and use small elements of quantum optical integrated circuits.
  arXiv  Detail & Related papers  (2022-12-27T10:02:25Z)
• Quantum Rabi interferometry of motion and radiation [1.0499611180329804]
  We propose a hybrid oscillator-qubit interferometric setup for the estimation of phase space displacements in an arbitrary direction. Using such a hybrid Rabi interferometer for quantum sensing, we show that the performance is superior to the ones attained by single-mode estimation schemes.
  arXiv  Detail & Related papers  (2022-04-16T02:21:54Z)
• Gravitational Redshift Tests with Atomic Clocks and Atom Interferometers [55.4934126700962]
  We characterize how the sensitivity to gravitational redshift violations arises in atomic clocks and atom interferometers. We show that contributions beyond linear order to trapping potentials lead to such a sensitivity of trapped atomic clocks. Guided atom interferometers are comparable to atomic clocks.
  arXiv  Detail & Related papers  (2021-04-29T15:07:40Z)
• Towards probing for hypercomplex quantum mechanics in a waveguide interferometer [55.41644538483948]
  We experimentally investigate the suitability of a multi-path waveguide interferometer with mechanical shutters for performing a test for hypercomplex quantum mechanics. We systematically analyse the influence of experimental imperfections that could lead to a false-positive test result.
  arXiv  Detail & Related papers  (2021-04-23T13:20:07Z)
• Interferobot: aligning an optical interferometer by a reinforcement learning agent [118.43526477102573]
  We train an RL agent to align a Mach-Zehnder interferometer, based on images of fringes acquired by a monocular camera. The agent is trained in a simulated environment, without any hand-coded features or a priori information about the physics. Thanks to a set of domain randomizations simulating uncertainties in physical measurements, the agent successfully aligns this interferometer without any fine tuning.
  arXiv  Detail & Related papers  (2020-06-03T13:10:54Z)
• Quantum Entangled Interferometers [0.348097307252416]
  A new type of quantum entangled interferometer was recently realized that employs parametric amplifiers as the wave splitting and recombination elements. The quantum entanglement stems from the parametric amplifiers, which produce quantum correlated fields for probing the phase change signal in the interferometer.
  arXiv  Detail & Related papers  (2020-04-26T20:14:22Z)

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.