Related papers: Quantum-limited estimation of the difference between photonic momenta via spatially resolved two-photon interference

Quantum-limited estimation of the difference between photonic momenta via spatially resolved two-photon interference

URL: http://arxiv.org/abs/2603.08602v1
Date: Mon, 09 Mar 2026 16:51:00 GMT
Title: Quantum-limited estimation of the difference between photonic momenta via spatially resolved two-photon interference
Abstract summary: We present a quantum sensing protocol for estimation of the difference between the momenta of two photons.<n>The protocol attains ultimate quantum precision in the simultaneous estimation of the components of the relative momentum.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We present a quantum sensing protocol for three-dimensional estimation of the difference between the momenta of two photons based on spatially resolved interferometric sampling measurements. The protocol attains ultimate quantum precision in the simultaneous estimation of the components of the relative momentum for any values of the parameters already with $\sim 2000$ sampling measurements and a bias below $1\%$. These results identify 3D spatially resolved two-photon interference as an efficient tool for multi-parameter quantum sensing, with potential applications in high-precision 3D localization, refractometry, and near-field calibration in free-space quantum technologies.

Related papers

Quantum noise scaling in continuously operating multiparameter sensors [39.146761527401424]
We map the photon shot noise, spin projection noise, and measurement back-action noise over an order of magnitude in probe power.<n>We observe linear, quadratic, and cubic scaling of the respective total noise powers with probe photon flux.<n>Additional probe-induced relaxation modifies the spin-noise spectrum while preserving the integrated noise scaling.
arXiv Detail & Related papers (2026-02-05T18:41:01Z)
Quantum Interference of Distinguishable Photons Based on Spatially-Resolved Measurements [67.410870290301]
We present experimental results demonstrating the quantum interference of two photons distinguishable in their transverse momenta.<n>We contrast our results with a non-spatially resolved measurement where averaging over the photons' positions washes out the quantum interference observed in spatially resolved measurements.
arXiv Detail & Related papers (2025-08-20T16:56:59Z)
Ultimate quantum sensitivity in the 3D relative localisation of two single-photon emitters via two-photon interference [0.0]
We present a quantum sensing protocol for the simultaneous estimation of the difference in the localization parameters of two single-photon sources.<n>We prove theoretically that this technique reaches the ultimate sensitivity in the 3D relative localization of two emitters.
arXiv Detail & Related papers (2025-04-22T22:18:49Z)
Ultrasensitive Transverse Deflection Measurement with Two-photon Interference [8.406719933893529]
Hong-Ou-Mandel (HOM) interference is intrinsic quantum phenomena that goes beyond the possibilities of classical physics.<n>We present an experimental demonstration of a spatial HOM interferometry for measuring the transverse deflection of an optical beam.
arXiv Detail & Related papers (2025-04-06T07:52:43Z)
Multi-parameter estimation of the state of two interfering photonic qubits [0.0]
It is demonstrated a two-photon interfering technique based on polarization-resolved measurements for the simultaneous estimation. We show the experimental feasibility and accuracy of this technique even when a limited number of sampling measurements is employed.
arXiv Detail & Related papers (2024-05-21T15:38:28Z)
Estimation with ultimate quantum precision of the transverse displacement between two photons via two-photon interference sampling measurements [0.0]
We present a quantum sensing scheme achieving the ultimate quantum sensitivity in the estimation of the transverse displacement between two photons interfering at a balanced beam splitter. This scheme can possibly lead to enhanced high-precision nanoscopic techniques, such as super-resolved single-molecule localization microscopy with quantum dots.
arXiv Detail & Related papers (2023-09-13T11:18:00Z)
High-dimensional quantum correlation measurements with an adaptively gated hybrid single-photon camera [58.720142291102135]
We propose an adaptively-gated hybrid intensified camera (HIC) that combines a high spatial resolution sensor and a high temporal resolution detector. With a spatial resolution of nearly 9 megapixels and nanosecond temporal resolution, this system allows for the realization of previously infeasible quantum optics experiments.
arXiv Detail & Related papers (2023-05-25T16:59:27Z)
Simultaneous quantum estimation of phase and indistinguishability in a two photon interferometer [0.0]
We derive the quantum Fisher information matrix associated to the simultaneous estimation of an interferometric phase. We perform an experiment based on a pair of photons with an unknown degree of indistinguishability entering a two-port interferometer.
arXiv Detail & Related papers (2023-03-27T18:56:03Z)
Tunable photon-mediated interactions between spin-1 systems [68.8204255655161]
We show how to harness multi-level emitters with several optical transitions to engineer photon-mediated interactions between effective spin-1 systems. Our results expand the quantum simulation toolbox available in cavity QED and quantum nanophotonic setups.
arXiv Detail & Related papers (2022-06-03T14:52:34Z)
Quantifying n-photon indistinguishability with a cyclic integrated interferometer [40.24757332810004]
We report on a universal method to measure the genuine indistinguishability of n-photons. Our approach relies on a low-depth cyclic multiport interferometer with N = 2n modes. We experimentally demonstrate this technique for a 8-mode integrated interferometer fabricated using femtosecond laser micromachining.
arXiv Detail & Related papers (2022-01-31T16:30:52Z)
Hyperentanglement in structured quantum light [50.591267188664666]
Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes. We generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities.
arXiv Detail & Related papers (2020-06-02T18:00:04Z)

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