Robust Higher-Order Hamiltonian Engineering for Quantum Sensing with Strongly Interacting Systems
arXiv:2303.07363 · doi:10.1103/PhysRevLett.131.220803
Abstract
Dynamical decoupling techniques constitute an integral part of many quantum sensing platforms, often leading to orders-of-magnitude improvements in coherence time and sensitivity. Most AC sensing sequences involve a periodic echo-like structure, in which the target signal is synchronized with the echo period. We show that for strongly interacting systems, this construction leads to a fundamental sensitivity limit associated with imperfect interaction decoupling. We present a simple physical picture demonstrating the origin of this limitation, and further formalize these considerations in terms of concise higher-order decoupling rules. We then show how these limitations can be surpassed by identifying a novel sequence building block, in which the signal period matches twice the echo period. Using these decoupling rules and the resulting sequence building block, we experimentally demonstrate significant improvements in dynamical decoupling timescales and magnetic field sensitivity, opening the door for new applications in quantum sensing and quantum many-body physics.
arXiv comment5 pages, 3 figures, see accompanying paper "Higher-Order Methods for Hamiltonian Engineering Pulse Sequence Design" for details on Hamiltonian engineering techniques
References in corpus (28)
- Quantum sensing
- Nanometer scale quantum thermometry in a living cell
- Dynamical Decoupling of Open Quantum Systems
- Magnetometry with nitrogen-vacancy defects in diamond
- Observation of a Many-Body Dynamical Phase Transition with a 53-Qubit Quantum Simulator
- Universal dynamical decoupling of a single solid-state spin from a spin bath
- Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
- Self-Verifying Variational Quantum Simulation of the Lattice Schwinger Model
- High Resolution Magnetic Resonance Spectroscopy Using Solid-State Spins
- Controlling many-body dynamics with driven quantum scars in Rydberg atom arrays
- Imaging viscous flow of the Dirac fluid in graphene
- Real-space imaging of non-collinear antiferromagnetic order with a single spin magnetometer
- Control and Local Measurement of the Spin Chemical Potential in a Magnetic Insulator
- Approaching the Heisenberg limit without single-particle detection
- Quantum state magnification
- Critical thermalization of a disordered dipolar spin system in diamond
- Probing and manipulating embryogenesis via nanoscale thermometry and temperature control
- Quantum Metrology with Strongly Interacting Spin Systems
- Robust Dynamic Hamiltonian Engineering of Many-Body Spin Systems
- Observation of Floquet prethermalization in dipolar spin chains
- Optimizing a Dynamical Decoupling Protocol for Solid-State Electronic Spin Ensembles in Diamond
- Environment Assisted Precision Measurement
- Emergent hydrodynamics in a strongly interacting dipolar spin ensemble
- Quantum correlation in disordered spin systems: entanglement and applications to magnetic sensing
- Real-time estimation of the optically detected magnetic resonance shift in diamond quantum thermometry
- Dynamical decoupling of spin ensembles with strong anisotropic interactions
- Controlling local thermalization dynamics in a Floquet-engineered dipolar ensemble
- Higher-Order Methods for Hamiltonian Engineering Pulse Sequence Design
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- A High-Power Clock Laser Spectrally Tailored for High-Fidelity Quantum State Engineering
- Supersymmetry dynamics on Rydberg atom arrays
- Engineering Precise and Robust Effective Hamiltonians
- Quantum decoherence of nitrogen-vacancy spin ensembles in a nitrogen spin bath in diamond under dynamical decoupling
- Coherent Generation and Protection of Anticoherent Spin States
- Microscale Sensing with Strongly Interacting NV Ensembles at High Fields