Ultrasensitive magnetic field detection using a single artificial atom
arXiv:1301.0778 · doi:10.1038/ncomms2332
Abstract
Efficient detection of magnetic fields is central to many areas of research and has important practical applications ranging from materials science to geomagnetism. High sensitivity detectors are commonly built using direct current-superconducting quantum interference devices (DC-SQUIDs) or atomic systems. Here we use a single artificial atom to implement an ultrahigh sensitivity magnetometer with a size in the micron range. The artificial atom is a superconducting two-level system at low temperatures, operated in a way similar to atomic magnetometry. The high sensitivity results from quantum coherence combined with strong coupling to magnetic field. By employing projective measurements, we obtain a sensitivity of $2.7\, \t{pT}/\sqrt{\t{Hz}}$ at 10 MHz. We discuss feasible improvements that will increase the sensitivity by over one order of magnitude. The intrinsic sensitivity of this method to AC fields in the 100 kHz - 10 MHz range compares favourably with DC-SQUIDs and atomic magnetometers of equivalent spatial resolution. This result illustrates the potential of artificial quantum systems for sensitive detection and related applications.
Significantly revised and updated version of the manuscript is published in Nature Communications 3:1324 (2012)
References in corpus (22)
- Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
- Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
- High-sensitivity diamond magnetometer with nanoscale resolution
- Optical Magnetometry
- Beyond the Jaynes-Cummings model: circuit QED in the ultrastrong coupling regime
- Ultra-high sensitivity magnetic field and magnetization measurements with an atomic magnetometer
- Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
- Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
- Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
- Scanning magnetic field microscope with a diamond single-spin sensor
- AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
- Phase preserving amplification near the quantum limit with a Josephson Ring Modulator
- Decoherence of flux qubits due to 1/f flux noise
- A single NV defect coupled to a nanomechanical oscillator
- Cavity Optomechanical Magnetometer
- Quantum non-demolition measurement of a superconducting two-level system
- High-Resolution Magnetometry with a Spinor Bose-Einstein Condensate
- Single-spin magnetometry with multi-pulse sensing sequences
- Sensing electric and magnetic fields with Bose-Einstein Condensates
- Role of relaxation in the quantum measurement of a superconducting qubit using a nonlinear oscillator
- Flux qubit as a sensor for a magnetometer with quantum limited sensitivity
- Insertable system for fast turnaround time microwave experiments in a dilution refrigerator
Cited by in corpus (56)
- Quantum sensing
- Simultaneous Broadband Vector Magnetometry Using Solid-State Spins
- Quantum limits to the energy resolution of magnetic field sensors
- Observation of Floquet states in a strongly driven artificial atom
- Ultrasensitive Magnetometer Using a Single Atom
- Nanomaterials for Quantum Information Science and Engineering
- Variational-State Quantum Metrology
- Review: Quantum Metrology and Sensing with Many-Body Systems
- Heisenberg limited single-mode quantum metrology
- Entanglement-based dc magnetometry with separated ions
- Quantum-enhanced magnetometry by phase estimation algorithms with a single artificial atom
- Quantum metrology with a transmon qutrit
- Robust entanglement-based magnetic field sensor beyond the standard quantum limit
- Flux qubits in a planar circuit quantum electrodynamics architecture: quantum control and decoherence
- Error-Mitigated Quantum Metrology via Virtual Purification
- NV-Diamond Magnetic Microscopy using a Double Quantum 4-Ramsey Protocol
- Realizing a Circuit Analog of an Optomechanical System with Longitudinally Coupled Superconducting Resonators
- A long-lived capacitively shunted flux qubit embedded in a 3D cavity
- Sequential measurements for quantum-enhanced magnetometry in spin chain probes
- Quantum remote sensing with asymmetric information gain
- Integrable quantum many-body sensors for AC field sensing
- A hybrid-systems approach to spin squeezing using a highly dissipative ancillary system
- Engineering the microwave to infrared noise photon flux for superconducting quantum systems
- Electron paramagnetic resonance spectroscopy using a single artificial atom
- Gradient-descent quantum process tomography by learning Kraus operators
- Interference in Atomic Magnetometry
- Dynamics of parametric fluctuations induced by quasiparticle tunneling in superconducting flux qubits
- Single-domain Bose condensate magnetometer achieves energy resolution per bandwidth below
- Quantum metrology with generalized cat states
- Electron Spin Resonance with up to 20 Spin Sensitivity Measured using a Superconducting Flux Qubit
- Quantum State Tomography with Conditional Generative Adversarial Networks
- Experimental Realization of Self-Contained Quantum Refrigeration
- Anonymous quantum sensing
- Preparing ground states of the XXZ model using the quantum annealing with inductively coupled superconducting flux qubits
- Linear Ascending Metrological Algorithm
- Remote sensing of a levitated superconductor with a flux-tunable microwave cavity
- Quantum metrology based on symmetry-protected adiabatic transformation: Imperfection, finite time duration, and dephasing
- Driving-induced resonance narrowing in a strongly coupled cavity-qubit system
- Superharmonic Resonances in a Strongly Coupled Cavity-Atom System
- Phase estimation algorithm for the multibeam optical metrology
- Single Spin Detection with Entangled States
- Nuclear magnetic resonance spectroscopy with a superconducting flux qubit
- Anonymous estimation of intensity distribution of magnetic fields with quantum sensing network
- Beating the Ramsey limit on sensing with deterministic qubit control
- Amplification of the quantum superposition macroscopicity of a flux qubit by a magnetized Bose gas
- Low-temperature Quantum Metrology Enhanced by Strong Couplings
- Dynamic Evolution of Flux Distributions in a Pulse-driven Superconductor by High-speed Magneto-optical Imaging
- Adiabatic Quantum Estimation: A Numerical Study of the Heisenberg XX Model with Antisymmetric Exchange
- Scalable surface ion trap design for magnetic quantum sensing and gradiometry
- Thresholded Quantum Sensing with a Frustrated Kitaev Trimer
- Magnetic Field Detection Using a Two-Qubit System Under Noisy Heisenberg Interaction
- Opportunities and Limitations in Broadband Sensing
- Superconducting microwave magnetometer for absolute flux detection
- Magnetically modulated superconductor-graphene-superconductor (SGS) Josephson junctions and their tunability
- Exponential enhancement of sensitivity in Ramsey interferometry with optically thick ensemble of atoms
- Characterization and generation of a SQL-beating catlike state through repetitive measurements