Detecting multilevel entanglement from light-based entanglement witnesses

• URL: http://arxiv.org/abs/2602.08180v1
• Date: Mon, 09 Feb 2026 00:45:24 GMT
• Title: Detecting multilevel entanglement from light-based entanglement witnesses
• Authors: Pedro Rosario, Romain Bachelard,
• Abstract summary: We introduce a set of electric-field based inequalities capable of detecting multilevel entanglement from a system of N quantum emitters.<n>Our findings open up possibilities for the detection of entanglement without local measurements in systems of multilevel emitters such as superconducting qubits, Rydberg atoms or quantum dots.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce a set of electric-field based inequalities capable of detecting multilevel entanglement from a system of N quantum emitters. We determine that the polarization channel as well as the direction of detection can enhance entanglement detection, a feature specific to multilevel systems. We demonstrate the efficiency of the witnesses to detect genuine multipartite entanglement by applying it to families of paradigmatic quantum states, such as Dicke states, singlet states and W-like states. The detection is not only robust to noise, but also applies to mixed entangled states. Our findings open up possibilities for the detection of entanglement without local measurements in systems of multilevel emitters such as superconducting qubits, Rydberg atoms or quantum dots.

Related papers

• Entanglement Detection Beyond Local Bound with Coarse Calibrated measurements [0.0]
  We present a systematic approach for strengthening Bell inequalities for qubit systems.<n>We derive trade-offs between upper bounds for separable states and general states in terms of structure functions.<n>We then strengthen n-partite Bell inequalities for the detection of states exhibiting a diversity of entanglement structures.
  arXiv  Detail & Related papers  (2025-08-05T14:53:38Z)
• Entanglement Detection with Variational Quantum Interference: Theory and Experiment [7.059362676600297]
  Entanglement detection serves as a fundamental task in quantum information science.<n>We develop an entanglement detection protocol that requires moderate classical and quantum resources.<n>Our protocol paves a new path for efficient entanglement detection.
  arXiv  Detail & Related papers  (2025-05-30T16:26:25Z)
• Scalable multipartite entanglement criteria for continuous variables [6.181008505226926]
  We propose a quite general entanglement detection method for all kinds of multipartite entanglement of multimode continuous variable systems. Our criterion can detect entanglement, genuine entanglement and other kinds of inseparabilities almost imidiately.
  arXiv  Detail & Related papers  (2024-11-05T13:27:19Z)
• The multimode conditional quantum Entropy Power Inequality and the squashed entanglement of the multimode extreme bosonic Gaussian channels [53.253900735220796]
  Inequality determines the minimum conditional von Neumann entropy of the output of the most general linear mixing of bosonic quantum modes.<n>Bosonic quantum systems constitute the mathematical model for the electromagnetic radiation in the quantum regime.
  arXiv  Detail & Related papers  (2024-10-18T13:59:50Z)
• Detecting entanglement from macroscopic measurements of the electric field and its fluctuations [0.0]
  We introduce a family of entanglement witnesses for open quantum systems. Their efficiency is demonstrated by detecting, from almost any direction, the entanglement of single-photon states. These electric-field-based witnesses can be used on any set of emitters described by the Pauli group.
  arXiv  Detail & Related papers  (2024-04-24T16:47:42Z)
• Effect of the readout efficiency of quantum measurement on the system entanglement [44.99833362998488]
  We quantify the entanglement for a particle on a 1d quantum random walk under inefficient monitoring. We find that the system's maximal mean entanglement at the measurement-induced quantum-to-classical crossover is in different ways by the measurement strength and inefficiency.
  arXiv  Detail & Related papers  (2024-02-29T18:10:05Z)
• Measurement-Device-Independent Detection of Beyond-Quantum State [53.64687146666141]
  We propose a measurement-device-independent (MDI) test for beyond-quantum state detection. We discuss the importance of tomographic completeness of the input sets to the detection.
  arXiv  Detail & Related papers  (2023-12-11T06:40:13Z)
• Detection of Beyond-Quantum Non-locality based on Standard Local Quantum Observables [46.03321798937856]
  We show that device independent detection cannot distinguish beyond-quantum non-local states from standard quantum states. This paper gives a device dependent detection based on local observables to distinguish any beyond-quantum non-local state from all standard quantum states.
  arXiv  Detail & Related papers  (2023-01-10T20:19:34Z)
• Efficient Bipartite Entanglement Detection Scheme with a Quantum Adversarial Solver [89.80359585967642]
  Proposal reformulates the bipartite entanglement detection as a two-player zero-sum game completed by parameterized quantum circuits. We experimentally implement our protocol on a linear optical network and exhibit its effectiveness to accomplish the bipartite entanglement detection for 5-qubit quantum pure states and 2-qubit quantum mixed states.
  arXiv  Detail & Related papers  (2022-03-15T09:46:45Z)
• Certification of Genuine Multipartite Entanglement with General and Robust Device-independent Witnesses [11.468122934770788]
  Genuine multipartite entanglement represents the strongest type of entanglement, which is an essential resource for quantum information processing. Standard methods to detect genuine multipartite entanglement require full knowledge of the Hilbert space dimension and precise calibration of measurement devices. In this work, we explore a general and robust DI method which can be applied to various realistic multipartite quantum state in arbitrary finite dimension.
  arXiv  Detail & Related papers  (2021-08-29T07:15:45Z)
• Mid-infrared homodyne balanced detector for quantum light characterization [52.77024349608834]
  We present the characterization of a novel balanced homodyne detector operating in the mid-infrared. We discuss the experimental results with a view to possible applications to quantum technologies, such as free-space quantum communication.
  arXiv  Detail & Related papers  (2021-03-16T11:08:50Z)

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.