Quantum Sensing with Topological-Paired Bound States

• URL: http://arxiv.org/abs/2311.01370v2
• Date: Thu, 07 Aug 2025 17:34:27 GMT
• Title: Quantum Sensing with Topological-Paired Bound States
• Authors: Tao Zhang, Peng Xu, Jiazhong Hu, Xingze Qiu,
• Abstract summary: We present an efficient and robust protocol for quantum-enhanced sensing using a single qubit.<n>Our method relies on the topological-paired bound states, which are localized near the qubit.<n>We show that the sensitivity can reach the Heisenberg limit across a large field range.
• Score: 6.349331313773092
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present an efficient and robust protocol for quantum-enhanced sensing using a single qubit in the topological waveguide system. Our method relies on the topological-paired bound states, which are localized near the qubit and can be effectively regarded as a two-level system. Through the lens of Bayesian inference theory, we show that the sensitivity can reach the Heisenberg limit across a large field range. Inheriting from the topological robustness of the waveguide, our sensing protocol is robust against local perturbations. Besides, our sensing protocol utilizes a product state as the initial state, which can be easily prepared in experiments. We expect this approach would pave the way toward robust topological quantum sensors based on near-term quantum platforms such as superconducting qubits and Rydberg arrays.

Related papers

• Quantum sensing of displacements with stabilized GKP states [41.94295877935867]
  We show how protocols for the stabilization of Gottesman-Kitaev-Preskill states can be used for the estimation of two-quadrature displacement sensing.<n>Thanks to the stabilization, this sensor is backaction evading and can function continuously without reset, making it well suited for the detection of itinerant signals.
  arXiv  Detail & Related papers  (2025-06-25T17:18:50Z)
• Bosonic Entanglement and Quantum Sensing from Energy Transfer in two-tone Floquet Systems [1.2499537119440245]
  Quantum-enhanced sensors, which surpass the standard quantum limit (circuit) and approach the fundamental precision limits dictated by quantum mechanics, are finding applications across a wide range of scientific fields. We introduce entanglement and preserve quantum information among many particles in a sensing circuit. We propose a superconducting-entangled sensor in the microwave regime, highlighting its potential for practical applications in high-precision measurements.
  arXiv  Detail & Related papers  (2024-10-15T00:48:01Z)
• Realization of versatile and effective quantum metrology using a single bosonic mode [0.0]
  We present a versatile and on-demand protocol for deterministic parameter estimation.<n>With low average photon numbers of only up to 1.76, we achieve quantum-enhanced precision approaching the Heisenberg scaling.<n>We show that the gain or sensitivity range can be further enhanced on the fly by tailoring the input states.
  arXiv  Detail & Related papers  (2024-03-22T05:47:47Z)
• Quantum geometry and bounds on dissipation in slowly driven quantum systems [0.0]
  We show that heat production in slowly driven quantum systems is linked to the topological structure of the driving protocol. Our results bridge topological phenomena and energy dissipation in slowly driven quantum systems.
  arXiv  Detail & Related papers  (2023-06-29T18:00:03Z)
• Quantum Gate Optimization for Rydberg Architectures in the Weak-Coupling Limit [55.05109484230879]
  We demonstrate machine learning assisted design of a two-qubit gate in a Rydberg tweezer system. We generate optimal pulse sequences that implement a CNOT gate with high fidelity. We show that local control of single qubit operations is sufficient for performing quantum computation on a large array of atoms.
  arXiv  Detail & Related papers  (2023-06-14T18:24:51Z)
• Neural-network quantum states for ultra-cold Fermi gases [49.725105678823915]
  This work introduces a novel Pfaffian-Jastrow neural-network quantum state that includes backflow transformation based on message-passing architecture. We observe the emergence of strong pairing correlations through the opposite-spin pair distribution functions. Our findings suggest that neural-network quantum states provide a promising strategy for studying ultra-cold Fermi gases.
  arXiv  Detail & Related papers  (2023-05-15T17:46:09Z)
• Dissipative preparation and stabilization of many-body quantum states in a superconducting qutrit array [55.41644538483948]
  We present and analyze a protocol for driven-dissipatively preparing and stabilizing a manifold of quantum manybody entangled states. We perform theoretical modeling of this platform via pulse-level simulations based on physical features of real devices. Our work shows the capacity of driven-dissipative superconducting cQED systems to host robust and self-corrected quantum manybody states.
  arXiv  Detail & Related papers  (2023-03-21T18:02:47Z)
• Variational waveguide QED simulators [58.720142291102135]
  Waveguide QED simulators are made by quantum emitters interacting with one-dimensional photonic band-gap materials. Here, we demonstrate how these interactions can be a resource to develop more efficient variational quantum algorithms.
  arXiv  Detail & Related papers  (2023-02-03T18:55:08Z)
• Probing finite-temperature observables in quantum simulators of spin systems with short-time dynamics [62.997667081978825]
  We show how finite-temperature observables can be obtained with an algorithm motivated from the Jarzynski equality. We show that a finite temperature phase transition in the long-range transverse field Ising model can be characterized in trapped ion quantum simulators.
  arXiv  Detail & Related papers  (2022-06-03T18:00:02Z)
• Experimental demonstration of topological bounds in quantum metrology [10.98437608071324]
  We prove that the Berry curvature and Chern numbers of band structures can dictate strict lower bounds on metrological properties. Our work opens the door to metrological applications empowered by topology, with potential implications for quantum many-body systems.
  arXiv  Detail & Related papers  (2022-06-01T14:59:10Z)
• Accessing the topological Mott insulator in cold atom quantum simulators with realistic Rydberg dressing [58.720142291102135]
  We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices. We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation. We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
  arXiv  Detail & Related papers  (2022-03-28T14:55:28Z)
• Quantum Non-Hermitian Topological Sensors [0.0]
  We investigate in the framework of quantum noise theory how the striking boundary-sensitivity recently discovered in the context of non-Hermitian (NH) topological phases may be harnessed to devise novel quantum sensors.
  arXiv  Detail & Related papers  (2021-06-09T18:00:06Z)
• Integrable quantum many-body sensors for AC field sensing [0.0]
  We show that integrable many-body systems can be exploited efficiently for detecting the amplitude of an AC field. We show that the proposed protocol can also be realized in near-term quantum simulators.
  arXiv  Detail & Related papers  (2021-05-27T23:52:22Z)
• Probing Topological Spin Liquids on a Programmable Quantum Simulator [40.96261204117952]
  We use a 219-atom programmable quantum simulator to probe quantum spin liquid states. In our approach, arrays of atoms are placed on the links of a kagome lattice and evolution under Rydberg blockade creates frustrated quantum states. The onset of a quantum spin liquid phase of the paradigmatic toric code type is detected by evaluating topological string operators.
  arXiv  Detail & Related papers  (2021-04-09T00:18:12Z)
• Probing the topological Anderson transition with quantum walks [48.7576911714538]
  We consider one-dimensional quantum walks in optical linear networks with synthetically introduced disorder and tunable system parameters. The option to directly monitor the walker's probability distribution makes this optical platform ideally suited for the experimental observation of the unique signatures of the one-dimensional topological Anderson transition.
  arXiv  Detail & Related papers  (2021-02-01T21:19:15Z)
• Experimental Realization of Nonadiabatic Holonomic Single-Qubit Quantum Gates with Two Dark Paths in a Trapped Ion [41.36300605844117]
  We show nonadiabatic holonomic single-qubit quantum gates on two dark paths in a trapped $171mathrmYb+$ ion based on four-level systems with resonant drives. We find that nontrivial holonomic two-qubit quantum gates can also be realized within current experimental technologies.
  arXiv  Detail & Related papers  (2021-01-19T06:57:50Z)
• Basis-independent system-environment coherence is necessary to detect magnetic field direction in an avian-inspired quantum magnetic sensor [77.34726150561087]
  We consider an avian-inspired quantum magnetic sensor composed of two radicals with a third "scavenger" radical under the influence of a collisional environment. We show that basis-independent coherence, in which the initial system-environment state is non-maximally mixed, is necessary for optimal performance.
  arXiv  Detail & Related papers  (2020-11-30T17:19:17Z)
• Quantum electrodynamics in a topological waveguide [47.187609203210705]
  In this work we investigate the properties of superconducting qubits coupled to a metamaterial waveguide based on a photonic analog of the Su-Schrieffer-Heeger model. We explore topologically-induced properties of qubits coupled to such a waveguide, ranging from the formation of directional qubit-photon bound states to topology-dependent cooperative radiation effects.
  arXiv  Detail & Related papers  (2020-05-08T00:22:17Z)

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.