Enhancing the sensitivity of nonlinearity sensors through homodyne detection in dissipatively coupled systems

• URL: http://arxiv.org/abs/2207.09261v2
• Date: Mon, 5 Jun 2023 14:37:05 GMT
• Title: Enhancing the sensitivity of nonlinearity sensors through homodyne detection in dissipatively coupled systems
• Authors: Dianzhen Cui, Jianning Li, Fude Li, Zhi-Cheng Shi, X. X. Yi
• Abstract summary: We propose a new sensing mechanism to enhance the sensitivity of a quantum system to nonlinearities by homodyning the amplitude quadrature of the cavity field. We find that this singularity is very sensitive to the two-photon drive and nonlinearity of the system, and compared to the previous nonlinearity sensor, the proposed sensor achieves an unprecedented sensitivity around the singularity point.
• Score: 0.6326688788147445
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this manuscript, we propose a new sensing mechanism to enhance the sensitivity of a quantum system to nonlinearities by homodyning the amplitude quadrature of the cavity field. The system consists of two dissipatively coupled cavity modes, one of which is subject to single- and two-photon drives. In the regime of low two-photon driving strength, the spectrum of the system acquires a real spectral singularity. We find that this singularity is very sensitive to the two-photon drive and nonlinearity of the system, and compared to the previous nonlinearity sensor, the proposed sensor achieves an unprecedented sensitivity around the singularity point. Moreover, the scheme is robust against fabrication imperfections. This work would open a new avenue for quantum sensors, which could find applications in many fields, such as the precise measurement and quantum metrology.

Related papers

• Non-Hermitian sensing in the absence of exceptional points [9.295592980136904]
  We experimentally demonstrate universal non-Hermitian sensing in the absence of exceptional points. The scheme makes use of the intrinsic sensitivity of a non-Hermitian probe to weak external fields, which can be understood as the direct consequence of non-Hermiticity. Our experiment opens the avenue of enhanced sensing without exceptional points, complementing existing efforts aimed at harnessing the unique features of open systems.
  arXiv  Detail & Related papers  (2024-03-13T03:32:23Z)
• How single-photon nonlinearity is quenched with multiple quantum emitters: Quantum Zeno effect in collective interactions with $\Lambda$-level atoms [49.1574468325115]
  We show that the single-photon nonlinearity vanishes with the number of emitters. The mechanism behind this behavior is the quantum Zeno effect, manifested in the slowdown of the photon-controlled dynamics.
  arXiv  Detail & Related papers  (2024-01-13T06:55:18Z)
• Correlated sensing with a solid-state quantum multi-sensor system for atomic-scale structural analysis [14.301219154831964]
  We develop a novel sensing paradigm exploiting the signal correlation among multiple quantum sensors. With three nitrogen-vacancy centers as a quantum electrometer system, we demonstrate this multi-sensor paradigm. We obtain the real-time charge dynamics of individual point defects and visualize how the dynamics induce the well-known optical spectral diffusion.
  arXiv  Detail & Related papers  (2024-01-04T08:26:20Z)
• Parametrically enhancing sensor sensitivity at an exceptional point [0.0]
  We propose a scheme to enhance the sensitivity of Non-Hermitian optomechanical mass-sensors. The sensitivity of both sensing schemes is greatly improved, yielding to a better performance of the sensor.
  arXiv  Detail & Related papers  (2023-12-08T14:25:18Z)
• Single-Spin Readout and Quantum Sensing using Optomechanically Induced Transparency [0.0]
  We propose to use this strain coupling for mechanically-mediated dispersive single-shot spin readout by an optomechanically-induced transparency measurement. Surprisingly, the estimated measurement times for negatively-charged silicon-vacancy defects in diamond are an order of magnitude shorter than those for single-shot optical fluorescence readout.
  arXiv  Detail & Related papers  (2022-12-02T23:01:08Z)
• Probing the symmetry breaking of a light--matter system by an ancillary qubit [50.591267188664666]
  Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena. We experimentally observe the parity symmetry breaking of an ancillary Xmon artificial atom induced by the field of a lumped-element superconducting resonator. This result opens a way to experimentally explore the novel quantum-vacuum effects emerging in the deep-strong coupling regime.
  arXiv  Detail & Related papers  (2022-09-13T06:14:08Z)
• Macroscopic noise amplification by asymmetric dyads in non-Hermitian optical systems for generative diffusion models [55.2480439325792]
  asymmetric non-Hermitian dyads are promising candidates for efficient sensors and ultra-fast random number generators. integrated light emission from such asymmetric dyads can be efficiently used for all-optical degenerative diffusion models of machine learning.
  arXiv  Detail & Related papers  (2022-06-24T10:19:36Z)
• Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
  Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
  arXiv  Detail & Related papers  (2021-06-14T13:39:46Z)
• 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)
• Fundamental limits for reciprocal and non-reciprocal non-Hermitian quantum sensing [2.372393003522374]
  Non-reciprocity can be a powerful resource for non-Hermitian quantum sensing. We establish fundamental limits on signal-to-noise ratio for reciprocal and non-reciprocal quantum sensing.
  arXiv  Detail & Related papers  (2021-04-22T01:45:11Z)
• Quantum metamaterial for nondestructive microwave photon counting [52.77024349608834]
  We introduce a single-photon detector design operating in the microwave domain based on a weakly nonlinear metamaterial. We show that the single-photon detection fidelity increases with the length of the metamaterial to approach one at experimentally realistic lengths. In stark contrast to conventional photon detectors operating in the optical domain, the photon is not destroyed by the detection and the photon wavepacket is minimally disturbed.
  arXiv  Detail & Related papers  (2020-05-13T18:00:03Z)

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.