The dynamical-decoupling-based spatiotemporal noise spectroscopy

Abstract

Here we demonstrate how the standard, temporal-only, dynamical-decoupling-based noise spectroscopy method can be extended to also encompass the spatial degree of freedom. This spatiotemporal spectroscopy utilizes a system of multiple qubits arranged in a line that are undergoing pure dephasing due to environmental noise. When the qubits are driven by appropriately coordinated sequences of $\pi$ pulses the multi-qubit register becomes decoupled from all components of the noise, except for those characterized by frequencies and wavelengths specified by the pulse sequences. This allows for employment of the procedure for reconstruction of the two-dimensional spectral density that quantifies the power distribution among spatial and temporal harmonic components of the noise.

arXiv comment17 pages, 6 figues

References in corpus (79)

• Quantum sensing
• Spins in few-electron quantum dots
• High-sensitivity diamond magnetometer with nanoscale resolution
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Dynamical suppression of decoherence in two-state quantum systems
• 14-qubit entanglement: creation and coherence
• A >99.9%-fidelity quantum-dot spin qubit with coherence limited by charge noise
• Quantum Computers and Dissipation
• Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
• High-fidelity quantum logic gates using trapped-ion hyperfine qubits
• High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
• Quantum Error Correction for Beginners
• Keeping a Quantum Bit Alive by Optimized $\pi$-Pulse Sequences
• Storing quantum information for 30 seconds in a nanoelectronic device
• Optimized Dynamical Decoupling in a Model Quantum Memory
• Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
• Interfacing spin qubits in quantum dots and donors - hot, dense and coherent
• How to Enhance Dephasing Time in Superconducting Qubits
• A blueprint for demonstrating quantum supremacy with superconducting qubits
• 10-qubit entanglement and parallel logic operations with a superconducting circuit
• Experimental Quantum Computations on a Topologically Encoded Qubit
• Ion-trap measurements of electric-field noise near surfaces
• Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
• Observation of Entangled States of a Fully Controlled 20-Qubit System
• A quantum information processor with trapped ions
• Fluctuations of Energy-Relaxation Times in Superconducting Qubits
• Universal dynamical control of quantum mechanical decay: Modulation of the coupling to the continuum
• Dynamical decoupling noise spectroscopy
• Scalable gate architecture for densely packed semiconductor spin qubits
• Quantum Error Correction for Metrology
• Nanoscale NMR Spectroscopy and Imaging of Multiple Nuclear Species
• Reducing decoherence in quantum computer memory with all quantum bits coupling to the same environment
• Spectroscopy of Surface-Induced Noise Using Shallow Spins in Diamond
• Achieving the Heisenberg limit in quantum metrology using quantum error correction
• Quantum memories at finite temperature
• Single Ion Quantum Lock-In Amplifier
• Nanometre-scale probing of spin waves using single electron spins
• Increasing sensing resolution with error correction
• Scaling of Dynamical Decoupling for Spin Qubits
• Optimal Dynamical Decoherence Control of a Qubit
• Dynamical decoupling sequence construction as a filter-design problem
• Efficient tools for quantum metrology with uncorrelated noise
• Assessing the progress of trapped-ion processors towards fault-tolerant quantum computation
• Gate fidelity and coherence of an electron spin in a Si/SiGe quantum dot with micromagnet
• Adaptive quantum metrology under general Markovian noise
• Measurement of the Noise Spectrum Using a Multiple-Pulse Sequence
• Scanning probe microscopy with chemical contrast by nanoscale nuclear magnetic resonance
• Coherent shuttle of electron-spin states
• Multiqubit Spectroscopy of Gaussian Quantum Noise
• Assessment of a silicon quantum dot spin qubit environment via noise spectroscopy
• Environmental noise spectroscopy with qubits subjected to dynamical decoupling
• Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing spin-bath
• Notch filtering the nuclear environment of a spin qubit
• Direct Measurement of the System-Environment Coupling as a Tool For Understanding Decoherence and Dynamical Decoupling
• Spectrum of the Nuclear Environment for GaAs Spin Qubits
• Optimized Dynamical Decoupling for Power Law Noise Spectra
• Electron spin as a spectrometer of nuclear spin noise and other fluctuations
• Application of optimal band-limited control protocols to quantum noise sensing
• Long-time Low-latency Quantum Memory by Dynamical Decoupling
• Fault-tolerant quantum computation versus Gaussian noise
• Precision Limits in Quantum Metrology with Open Quantum Systems
• Quantum metrology in the presence of spatially correlated noise: Restoring Heisenberg scaling
• Dynamical decoupling noise spectroscopy at an optimal working point of a qubit
• Spectroscopy of cross-correlations of environmental noises with two qubits
• Measuring nanoscale magnetic write head fields using a hybrid quantum register
• Optimally band-limited spectroscopy of control noise using a qubit sensor
• Surface Code Threshold in the Presence of Correlated Errors
• Decoherence of two entangled spin qubits coupled to an interacting sparse nuclear spin bath: application to nitrogen vacancy centers
• Microscopic models for charge-noise-induced dephasing of solid-state qubits
• Noise-robust quantum sensing via optimal multi-probe spectroscopy
• Breakdown of Surface Code Error Correction Due to Coupling to a Bosonic Bath
• Phonon-mediated generation of quantum correlations between quantum dot qubits
• Accuracy of dynamical-decoupling-based spectroscopy of Gaussian noise
• Non-Gaussian signatures and collective effects in charge noise affecting a dynamically-decoupled qubit
• Measuring environmental quantum noise exhibiting a non-monotonous spectral shape
• Ramsey Interferometry in Correlated Quantum Noise Environments
• Efficient continuous wave noise spectroscopy beyond weak coupling
• No-go theorem and optimization of dynamical decoupling against noise with soft cutoff
• Localization of a magnetic moment using a two-qubit probe

Cited by in corpus (20)

• Two-qubit spectroscopy of spatiotemporally correlated quantum noise in superconducting qubits
• Beyond Quantum Noise Spectroscopy: modelling and mitigating noise with quantum feature engineering
• Spatial Noise Correlations in a Si/SiGe Two-Qubit Device from Bell State Coherences
• Frame-Based Filter-Function Formalism for Quantum Characterization and Control
• Extending comb-based spectral estimation to multiaxis quantum noise
• Noise representations of open system dynamics
• Noise Sensing via Stochastic Quantum Zeno
• Learning Noise via Dynamical Decoupling of Entangled Qubits
• Measuring trajectories of environmental noise
• Fourier Transform Noise Spectroscopy
• Machine learning classification of non-Markovian noise disturbing quantum dynamics
• Noise Detection with Spectator Qubits and Quantum Feature Engineering
• Relationship between subjecting the qubit to dynamical decoupling and to a sequence of projective measurements
• Qubit-environment entanglement outside of pure decoherence: hyperfine interaction
• Measuring the environment of a Cs qubit with dynamical decoupling sequences
• Transition between continuous and discrete spectra in dynamical-decoupling noise spectroscopy
• Spin-qubit noise spectroscopy from randomized benchmarking by supervised learning
• Open-loop quantum control of small-size networks for high-order cumulants and cross-correlations sensing
• Revealing correlated noise with single-qubit operations
• Sensing microscopic noise events by frequent quantum measurements