Super-Heisenberg-limited Sensing via Collective Subradiance in Waveguide Quantum Electrodynamics

Abstract

We explore the quantum-metrological potential of subwavelength-spaced emitter arrays coupled to a one-dimensional nanophotonic waveguide. In this system, strong dipole--dipole interactions profoundly modify the collective optical response, leading to the emergence of ultranarrow subradiant resonances. Through an eigenmode analysis of the effective non-Hermitian Hamiltonian, we derive the decay rate of the most subradiant state, which, within the present model and geometry, exhibits an $N^{-3}$ scaling with even--odd oscillatory behavior in the deep-subwavelength regime. This scaling is directly observable in the single-photon scattering spectrum, enabling the detection of minute changes in atomic separation with a figure of merit that scales as $N^3$. The quantum Fisher information (QFI) scales as $N^6$ and can be closely approached by measuring spectral shifts near the steepest slope of the most subradiant resonance. These enhancements remain robust under realistic positional disorder, confirming that dipole--dipole-engineered subradiance provides a viable resource for quantum metrology. Our work bridges collective waveguide-QED physics and high-precision sensing, opening a route toward scalable quantum sensors on integrated nanophotonic platforms.

References in corpus (32)

• Single-Photon Switching and Entanglement of Solid-State Qubits in an Integrated Nanophotonic System
• Quantum Optical Metrology -- The Lowdown on High-N00N States
• Generalized Limits for Single-Parameter Quantum Estimation
• Quantum criticality as a resource for quantum estimation
• Cooperative resonances in light scattering from two-dimensional atomic arrays
• Entanglement-Enhanced Sensing in a Lossy and Noisy Environment
• Quantum Metrology: Dynamics vs. Entanglement
• Enhanced metrology at the critical point of a many-body Rydberg atomic system
• Time-Reversal-Based Quantum Metrology with Many-Body Entangled States
• Coherent control of a symmetry-engineered multi-qubit dark state in waveguide quantum electrodynamics
• A subwavelength atomic array switched by a single Rydberg atom
• Review: Quantum Metrology and Sensing with Many-Body Systems
• Dynamical theory of single photon transport in a one-dimensional waveguide coupled to identical and non-identical emitters
• Many-body localization in waveguide QED
• Beating the Standard Quantum Limit under Ambient Conditions with Solid-State Spins
• Quantum Photonic Circuits Integrated with Color Centers in Designer Nanodiamonds
• Scalable Networking of Neutral-Atom Qubits: Nanofiber-Based Approach for Multiprocessor Fault-Tolerant Quantum Computer
• Non-Hermitian Waveguide Cavity QED with Tunable Atomic Mirrors
• Efficient and Robust Entanglement Generation with Deep Reinforcement Learning for Quantum Metrology
• Coherent Interactions Between Silicon-Vacancy Centers in Diamond
• Quantum multiparameter estimation with multi-mode photon catalysis entangled squeezed state
• Atomic-scale on-demand photon polarization manipulation with high-efficiency for integrated photonic chips
• Tweezer-assisted subwavelength positioning of atomic arrays in an optical cavity
• Deterministic generation of arbitrary n-photon states in an integrated photonic system
• Photonic quantum metrology with variational quantum optical non-linearities
• Topologically protected subradiant cavity polaritons through linewidth narrowing enabled by dissipationless edge states
• Engineering photonic band gaps with a waveguide-QED structure containing an atom-polymer array
• Quantum search in many-body interacting system with long-range interaction
• Optical scattering imaging with sub-nanometer precision based on position-ultra-sensitive giant Lamb shift
• Disorder-Induced Strongly Correlated Photons in Waveguide QED
• Selective collective emission from a dense atomic ensemble coupled to a nanophotonic resonator
• Tunable ultrahigh reflection with broadband via collective atom-atom interaction in waveguide-QED system