Quantum-enhanced sensing on an optical transition via emergent collective quantum correlations
arXiv:2303.10688 · doi:10.1038/s41586-023-06472-z
Abstract
The control over quantum states in atomic systems has led to the most precise optical atomic clocks to date. Their sensitivity is currently bounded by the standard quantum limit, a fundamental floor set by quantum mechanics for uncorrelated particles, which can nevertheless be overcome when operated with entangled particles. Yet demonstrating a quantum advantage in real world sensors is extremely challenging and remains to be achieved aside from two remarkable examples, LIGO and more recently HAYSTAC. Here we illustrate a pathway for harnessing scalable entanglement in an optical transition using 1D chains of up to 51 ions with state-dependent interactions that decay as a power-law function of the ion separation. We show our sensor can be made to behave as a one-axis-twisting (OAT) model, an iconic fully connected model known to generate scalable squeezing. The collective nature of the state manifests itself in the preservation of the total transverse magnetization, the reduced growth of finite momentum spin-wave excitations, the generation of spin squeezing comparable to OAT (a Wineland parameter of dB for only N = 12 ions) and the development of non-Gaussian states in the form of atomic multi-headed cat states in the Q-distribution. The simplicity of our protocol enables scalability to large arrays with minimal overhead, opening the door to advances in timekeeping as well as new methods for preserving coherence in quantum simulation and computation. We demonstrate this in a Ramsey-type interferometer, where we reduce the measurement uncertainty by dB below the standard quantum limit for N = 51 ions.
arXiv commentDuring the completion of our work, we became aware of three related experiments using dressed Rydberg interactions in tweezer and microtrap array platforms. See arXiv:2303.08053, arXiv:2303.08078 and arXiv:2303.08805. This manuscript contains 14 Pages and 5 figures
References in corpus (45)
- Quantum sensing
- Advances in Quantum Metrology
- Quantum metrology with nonclassical states of atomic ensembles
- Trapped-Ion Quantum Computing: Progress and Challenges
- Many-Body Physics with Individually-Controlled Rydberg Atoms
- Multi-particle entanglement of hot trapped ions
- Cold atoms in cavity-generated dynamical optical potentials
- Engineered 2D Ising interactions on a trapped-ion quantum simulator with hundreds of spins
- Entanglement, Non-linear Dynamics, and the Heisenberg Limit
- Atomic clock performance beyond the geodetic limit
- Synthetic three-dimensional atomic structures assembled atom by atom
- Quantum spin dynamics and entanglement generation with hundreds of trapped ions
- Implementation of Cavity Squeezing of a Collective Atomic Spin
- Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
- Optical clock intercomparison with precision in one hour
- Resolving the gravitational redshift within a millimeter atomic sample
- A Fermi-degenerate three-dimensional optical lattice clock
- Observation of multi-component atomic Schrödinger cat states of up to 20 qubits
- Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
- Entanglement-Enhanced Optical Atomic Clock
- Approaching the Heisenberg limit without single-particle detection
- Deterministic Squeezed States with Joint Measurements and Feedback
- Trapped ion quantum computation with transverse phonon modes
- Cavity Mediated Collective Spin Exchange Interactions in a Strontium Superradiant Laser
- Optimal metrology with programmable quantum sensors
- Realizing spin squeezing with Rydberg interactions in a programmable optical clock
- Spin squeezing: transforming one-axis-twisting into two-axis-twisting
- Scalable spin squeezing in a dipolar Rydberg atom array
- Observing emergent hydrodynamics in a long-range quantum magnet
- Long-lived Bell states in an array of optical clock qubits
- Non-equilibrium dynamics of Ising models with decoherence: an exact solution
- Spin squeezing with short-range spin-exchange interactions
- Spin Squeezing by Rydberg Dressing in an Array of Atomic Ensembles
- Many-body protected entanglement generation in interacting spin systems
- A generalized phase space approach for solving quantum spin dynamics
- Controlling two-dimensional Coulomb crystals of more than 100 ions in a monolithic radio-frequency trap
- Dynamical generation of spin squeezing in ultra-cold dipolar molecules
- Robust spin squeezing from the tower of states of -symmetric spin Hamiltonians
- Controlling long ion strings for quantum simulation and precision measurements
- Realistic simulations of spin squeezing and cooperative coupling effects in large ensembles of interacting two-level systems
- Robust nuclear spin entanglement via dipolar interactions in polar molecules
- Entangling dynamics from effective rotor/spin-wave separation in U(1)-symmetric quantum spin models
- Rotor/spin-wave theory for quantum spin models with U(1) symmetry
- Validating phase-space methods with tensor networks in two-dimensional spin models with power-law interactions
- Observing frustrated quantum magnetism in two-dimensional ion crystals
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- Quantum Metrology via Floquet-Engineered Two-axis Twisting and Turn Dynamics
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- Symmetry: a fundamental resource for quantum coherence and metrology
- Quantum Enhanced Sensitivity through Many-Body Bloch Oscillations
- Preparing spin-squeezed states in Rydberg atom arrays via quantum optimal control
- A theory of quasiballistic spin transport
- Nonequilibrium Critical Scaling of a Squeezing Phase Transition
- Bayesian Frequency Metrology with Optimal Ramsey Interferometry in Optical Atomic Clocks
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- Spin amplification in realistic systems
- Protecting spin squeezing from decoherence
- Uncertainty, von Neumann Entropy, and Squeezing in a Bipartite State of Two-Level Atoms