Realisation of versatile and effective quantum metrology using a single bosonic mode

• URL: http://arxiv.org/abs/2403.14967v1
• Date: Fri, 22 Mar 2024 05:47:47 GMT
• Title: Realisation of versatile and effective quantum metrology using a single bosonic mode
• Authors: Xiaozhou Pan, Tanjung Krisnanda, Andrea Duina, Kimin Park, Pengtao Song, Clara Yun Fontaine, Adrian Copetudo, Radim Filip, Yvonne Y. Gao,
• Abstract summary: We present a versatile and on-demand protocol for deterministic parameter estimation on a single bosonic mode. With low photon numbers of up to 1.76, we achieve quantum-enhanced precision approaching the Heisenberg scaling. We show that the gain or sensitivity range can be further enhanced on the fly by tailoring the input states.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum metrology offers superior measurement precision compared to classical counterparts. Traditionally, achieving this enhancement involves employing multi-particle entangled quantum states, necessitating state preparation and detection schemes that are practically challenging. In this article, we present a versatile and on-demand protocol for deterministic parameter estimation that leverages two state-transfer operations on a single bosonic mode. Specifically, we demonstrate this protocol in the context of phase and amplitude estimation using the superposition of coherent states in the bosonic circuit quantum electrodynamics (cQED) platform. With low photon numbers of up to 1.76, we achieve quantum-enhanced precision approaching the Heisenberg scaling, reaching a metrological gain of 7.5(6) dB and 9.3(5) dB respectively for phase and amplitude estimation. We show that the gain or sensitivity range can be further enhanced on the fly by tailoring the input states based on specific system constraints. Our protocol can be adapted to further optimize the desired figures of merit using tailored quantum states or operations, not only for bosonic cQED hardware but also readily extensible to other continuous-variable platforms. The realisation of this versatile and effective scheme affords a promising path towards practical quantum-enhanced sensing.

Related papers

• Quantum optimal control of superconducting qubits based on machine-learning characterization [39.58317527488534]
  We propose an experimentally simple approach to realize optimal quantum controls tailored to the device parameters and environment. We use physics-inspired machine learning to infer an accurate model of the dynamics from experimentally available data. We show the power and feasibility of this approach by optimizing arbitrary single-qubit operations on a superconducting transmon qubit.
  arXiv  Detail & Related papers  (2024-10-29T23:54:25Z)
• Criticality-Enhanced Quantum Sensing with a Parametric Superconducting Resonator [0.0]
  We implement a critical quantum sensor using a superconducting parametric (i.e., two-photon driven) Kerr resonator. We show that quadratic precision scaling with respect to the system size can be achieved with finite values of the Kerr nonlinearity.
  arXiv  Detail & Related papers  (2024-09-30T05:43:08Z)
• Heisenberg-limited Bayesian phase estimation with low-depth digital quantum circuits [0.0]
  We develop and analyze a scheme that achieves near-optimal precision up to a constant overhead for Bayesian phase estimation. We show that the proposed scheme outperforms known schemes in the literature that utilize a similar set of initial states. We also propose an efficient phase unwinding protocol to extend the dynamic range of the proposed scheme.
  arXiv  Detail & Related papers  (2024-07-08T14:59:16Z)
• A Quantum-Classical Collaborative Training Architecture Based on Quantum State Fidelity [50.387179833629254]
  We introduce a collaborative classical-quantum architecture called co-TenQu. Co-TenQu enhances a classical deep neural network by up to 41.72% in a fair setting. It outperforms other quantum-based methods by up to 1.9 times and achieves similar accuracy while utilizing 70.59% fewer qubits.
  arXiv  Detail & Related papers  (2024-02-23T14:09:41Z)
• Mapping quantum circuits to shallow-depth measurement patterns based on graph states [0.0]
  We create a hybrid simulation technique for measurement-based quantum computing. We show that groups of fully commuting operators can be implemented using fully-parallel, i.e., non-adaptive, measurements. We discuss how such circuits can be implemented in constant quantum depths by employing quantum teleportation.
  arXiv  Detail & Related papers  (2023-11-27T19:00:00Z)
• Entanglement catalysis for quantum states and noisy channels [41.94295877935867]
  We investigate properties of entanglement and its role for quantum communication. For transformations between bipartite pure states, we prove the existence of a universal catalyst. We further develop methods to estimate the number of singlets which can be established via a noisy quantum channel.
  arXiv  Detail & Related papers  (2022-02-10T18:36:25Z)
• Dynamical learning of a photonics quantum-state engineering process [48.7576911714538]
  Experimentally engineering high-dimensional quantum states is a crucial task for several quantum information protocols. We implement an automated adaptive optimization protocol to engineer photonic Orbital Angular Momentum (OAM) states. This approach represents a powerful tool for automated optimizations of noisy experimental tasks for quantum information protocols and technologies.
  arXiv  Detail & Related papers  (2022-01-14T19:24:31Z)
• Quantum jump metrology in a two-cavity network [0.0]
  In interferometry, quantum physics is used to enhance measurement precision. An alternative approach is quantum metrology jump [L. A. Clark et al., Phys A 99, 022102] which deduces information by continuously monitoring an open quantum system. It is shown that the proposed approach can exceed the standard quantum limit without the need for complex quantum states being scalable.
  arXiv  Detail & Related papers  (2022-01-12T10:53:24Z)
• Robust preparation of Wigner-negative states with optimized SNAP-displacement sequences [41.42601188771239]
  We create non-classical states of light in three-dimensional microwave cavities. These states are useful for quantum computation. We show that this way of creating non-classical states is robust to fluctuations of the system parameters.
  arXiv  Detail & Related papers  (2021-11-15T18:20:38Z)
• Beating the classical phase precision limit using a quantum neuromorphic platform [2.4937400423177767]
  Phase measurement constitutes a key task in many fields of science, both in the classical and quantum regime. Here we theoretically model the use of a quantum network, composed of a randomly coupled set of two-level systems, as a processing device for phase measurement. We demonstrate phase precision scaling following the standard quantum limit, the Heisenberg limit, and beyond.
  arXiv  Detail & Related papers  (2021-10-14T16:29:02Z)
• Bosonic field digitization for quantum computers [62.997667081978825]
  We address the representation of lattice bosonic fields in a discretized field amplitude basis. We develop methods to predict error scaling and present efficient qubit implementation strategies.
  arXiv  Detail & Related papers  (2021-08-24T15:30:04Z)

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.