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

• URL: http://arxiv.org/abs/2403.14967v2
• Date: Wed, 08 Jan 2025 02:49:40 GMT
• Title: Realization 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. With low average photon numbers of only 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:
• Abstract: Quantum metrology offers the potential to surpass its classical counterpart, pushing the boundaries of measurement precision toward the ultimate Heisenberg limit. This enhanced precision is normally attained by utilizing large squeezed states or multi-particle entangled quantum states, both of which are often challenging to implement and prone to decoherence in real quantum devices. In this work, we present a versatile and on-demand protocol for deterministic parameter estimation that leverages two efficient state-transfer operations on a single bosonic mode. Specifically, we demonstrate this protocol in the context of phase estimation using the superposition of coherent states in the bosonic circuit quantum electrodynamics (cQED) platform. With low average photon numbers of only up to 1.76, we achieve quantum-enhanced precision approaching the Heisenberg scaling, reaching a metrological gain of 7.5(6) dB. Importantly, we show that the gain or sensitivity range can be further enhanced on the fly by tailoring the input states, with different superposition weights, based on specific system constraints. The realization of this versatile and efficient scheme affords a promising path towards practical quantum-enhanced sensing, not only for bosonic cQED hardware but also readily extensible to other continuous-variable platforms.

Related papers

• Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
  We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions. We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
  arXiv  Detail & Related papers  (2024-05-27T17:40:39Z)
• Simulating electronic structure on bosonic quantum computers [34.84696943963362]
  We propose an approach to map the electronic Hamiltonian into a qumode bosonic problem that can be solved on bosonic quantum devices. This work establishes a new pathway for simulating many-fermion systems, highlighting the potential of hybrid qubit-qumode quantum devices.
  arXiv  Detail & Related papers  (2024-04-16T02:04:11Z)
• Mitigating Errors on Superconducting Quantum Processors through Fuzzy Clustering [38.02852247910155]
  A new Quantum Error Mitigation (QEM) technique uses Fuzzy C-Means clustering to specifically identify measurement error patterns. We report a proof-of-principle validation of the technique on a 2-qubit register, obtained as a subset of a real NISQ 5-qubit superconducting quantum processor. We demonstrate that the FCM-based QEM technique allows for reasonable improvement of the expectation values of single- and two-qubit gates based quantum circuits.
  arXiv  Detail & Related papers  (2024-02-02T14:02:45Z)
• Enhanced quantum state transfer: Circumventing quantum chaotic behavior [35.74056021340496]
  We show how to transfer few-particle quantum states in a two-dimensional quantum network. Our approach paves the way to short-distance quantum communication for connecting distributed quantum processors or registers.
  arXiv  Detail & Related papers  (2024-02-01T19:00:03Z)
• Multi-parameter quantum metrology with stabilized multi-mode squeezed state [13.954530422962135]
  We generate and stabilize a two-mode squeezed state along two secular motional modes in a vibrating trapped ion with reservoir engineering. We demonstrate an estimation of two simultaneous collective displacements along the squeezed axes, achieving improvements surpassing the classical limit. The practical implications of our findings span a wide range of applications, including quantum sensing, quantum imaging, and various fields.
  arXiv  Detail & Related papers  (2023-12-16T08:32:09Z)
• Variational Quantum Metrology with Loschmidt Echo [20.002455345052702]
  We propose a scalable scheme with a symmetrical variational quantum circuit which, same as the Loschmidt echo, consists of a forward and a backward evolution. We show that in this scheme the quantum Fisher information, which quantifies the precision limit, can be efficiently obtained from a measurement signal of the Loschmidt echo. We experimentally implement the scheme on an ensemble of 10-spin quantum processor and successfully achieves a precision near the theoretical limit which outperforms the standard quantum limit with 12.4 dB.
  arXiv  Detail & Related papers  (2022-11-22T14:21:59Z)
• Approaching optimal entangling collective measurements on quantum computing platforms [0.3665899982351484]
  We show theoretically optimal single- and two-copy collective measurements for simultaneously estimating two non-commuting qubit rotations. This allows us to implement quantum-enhanced sensing, for which the metrological gain persists for high levels of decoherence.
  arXiv  Detail & Related papers  (2022-05-30T18:07:27Z)
• 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)
• 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)
• 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.