Two-parameter estimation via photon subtraction operation within a feedback-assisted interferometer

• URL: http://arxiv.org/abs/2506.05756v1
• Date: Fri, 06 Jun 2025 05:29:25 GMT
• Title: Two-parameter estimation via photon subtraction operation within a feedback-assisted interferometer
• Authors: Qingqian Kang, Zekun Zhao, Qisi Zhou, Teng Zhao, Cunjin Liu, Xin Su, Liyun Hu, Sanqiu Liu,
• Abstract summary: Multi-photon subtraction operations in a feedback-assisted interferometer can enhance measurement precision under both ideal and photon-loss conditions.<n>We demonstrate that an optimal feedback strength R_opt exists in both conditions.
• Score: 1.000181321960029
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper, we analyze how multi-photon subtraction operations in a feedback-assisted interferometer can enhance measurement precision for single-parameter and two-parameter estimation under both ideal and photon-loss conditions. We examine the effects of the feedback strength R, the optical parametric amplifier's gain g, the coherent state amplitude {\alpha}, and the order of multi-photon subtraction on system performance. We demonstrate that an optimal feedback strength R_{opt} exists in both conditions. Selecting a suitable R can significantly boost the system's robustness to photon loss, and markedly improve measurement precision. And the photon subtraction operations within a feedback-assisted interferometer can further enhance measurement precision effectively. Additionally, we find that increasing intramode correlations while decreasing intermode correlations can improve estimation accuracy. This work investigates a new method through the synergistic integration of feedback topology and non-Gaussian operations into a multiparameter estimation system, along with their systematic study under both ideal and loss conditions. The findings may contribute to improving quantum-enhanced measurements and hold promise for high-precision quantum sensing research.

Related papers

• Unconventional photon blockade in cavity QED with parametric amplification [0.0]
  We investigate the quantum-interference-induced photon blockade effect in a single two-level atom-cavity quantum electrodynamics system.<n>We show that coherently driving the atom leads to a stronger photon blockade than a coherently driven cavity.<n>This work may be suitable for experimentally realising a strongly antibunched single-photon source for applications in quantum technology.
  arXiv  Detail & Related papers  (2025-05-07T09:34:21Z)
• 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)
• Quantum radar with unreflected photons [0.0]
  Two descriptions are introduced and analyzed for a reflectivity estimation and detection scheme that does not involve measurement of photons scattered by the target. Results have applications for the design of optically active receivers based on combining echo-seeded spontaneous parametric downconversion and induced coherence due to photon indistinguishability.
  arXiv  Detail & Related papers  (2024-08-21T22:00:55Z)
• Spatial super-resolution in nanosensing with blinking emitters [79.16635054977068]
  We propose a method of spatial resolution enhancement in metrology with blinking fluorescent nanosensors. We believe that blinking fluorescent sensing agents being complemented with the developed image analysis technique could be utilized routinely in the life science sector.
  arXiv  Detail & Related papers  (2024-02-27T10:38:05Z)
• Deep Learning reconstruction with uncertainty estimation for $\gamma$ photon interaction in fast scintillator detectors [1.0149560203037322]
  This article presents a physics-informed deep learning method for the quantitative estimation of the spatial coordinates of gamma interactions within a monolithic scintillator. A Density Neural Network approach is designed to estimate the 2-dimensional gamma photon interaction coordinates in a fast lead tungstate detector.
  arXiv  Detail & Related papers  (2023-10-10T12:31:29Z)
• 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)
• Frequency-Aware Self-Supervised Monocular Depth Estimation [41.97188738587212]
  We present two versatile methods to enhance self-supervised monocular depth estimation models. The high generalizability of our methods is achieved by solving the fundamental and ubiquitous problems in photometric loss function. We are the first to propose blurring images to improve depth estimators with an interpretable analysis.
  arXiv  Detail & Related papers  (2022-10-11T14:30:26Z)
• RRNet: Relational Reasoning Network with Parallel Multi-scale Attention for Salient Object Detection in Optical Remote Sensing Images [82.1679766706423]
  Salient object detection (SOD) for optical remote sensing images (RSIs) aims at locating and extracting visually distinctive objects/regions from the optical RSIs. We propose a relational reasoning network with parallel multi-scale attention for SOD in optical RSIs. Our proposed RRNet outperforms the existing state-of-the-art SOD competitors both qualitatively and quantitatively.
  arXiv  Detail & Related papers  (2021-10-27T07:18:32Z)
• Quantum parameter estimation in a dissipative environment [44.23814225750129]
  We investigate the performance of quantum parameter estimation based on a qubit probe in a dissipative bosonic environment. It is found that (i) the non-Markovianity can effectively boost the estimation performance and (ii) the estimation precision can be improved by introducing a perpendicular probe-environment interaction.
  arXiv  Detail & Related papers  (2021-10-15T02:43:24Z)
• Quantum probes for the characterization of nonlinear media [50.591267188664666]
  We investigate how squeezed probes may improve individual and joint estimation of the nonlinear coupling $tildelambda$ and of the nonlinearity order $zeta$. We conclude that quantum probes represent a resource to enhance precision in the characterization of nonlinear media, and foresee potential applications with current technology.
  arXiv  Detail & Related papers  (2021-09-16T15:40:36Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)

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.