Near Heisenberg limited atomic clocks in the presence of decoherence
arXiv:1304.2288 · doi:10.1103/PhysRevLett.111.090801
Abstract
The ultimate stability of atomic clocks is limited by the quantum noise of the atoms. To reduce this noise it has been suggested to use entangled atomic ensembles with reduced atomic noise. Potentially this can push the stability all the way to the limit allowed by the Heisenberg uncertainty relation, which is denoted the Heisenberg limit. In practice, however, entangled states are often more prone to decoherence, which may prevent reaching this performance. Here we present an adaptive measurement protocol that in the presence of a realistic source of decoherence enables us to get near Heisenberg limited stability of atomic clocks using entangled atoms. The protocol may thus realize the full potential of entanglement for quantum metrology despite the detrimental influence of decoherence.
13 pages, 9 figures. Note that new reference: Y. Matsuzaki, S. C. Benjamin, and J. Fitzsimons, Phys. Rev. A 84, 012103 (2011) is added
References in corpus (2)
Cited by in corpus (57)
- Quantum metrology with nonclassical states of atomic ensembles
- A quantum network of clocks
- Atomic Clocks for Geodesy
- Deterministic Squeezed States with Joint Measurements and Feedback
- Optimal metrology with programmable quantum sensors
- Quantum metrology for a general Hamiltonian parameter
- Measurements with prediction and retrodiction on the collective spin of 10^{11} atoms beat the standard quantum limit
- Heisenberg-limited atom clocks based on entangled qubits
- Heisenberg uncertainty for qubit measurements
- Long-lived Bell states in an array of optical clock qubits
- Quantum sensing with atomic, molecular, and optical platforms for fundamental physics
- Quantum Variational Optimization of Ramsey Interferometry and Atomic Clocks
- Bayesian quantum frequency estimation in presence of collective dephasing
- Learning in Quantum Control: High-Dimensional Global Optimization for Noisy Quantum Dynamics
- Entanglement-enhanced quantum metrology: from standard quantum limit to Heisenberg limit
- Improved Quantum Magnetometry beyond the Standard Quantum Limit
- Optimal Scheme for Quantum Metrology
- Symmetries and Conservation Laws in Quantum Trajectories: Dissipative Freezing
- Protected state enhanced quantum metrology with interacting two-level ensembles
- Improving cold-atom sensors with quantum entanglement: Prospects and challenges
- Heisenberg-limited noisy atomic clock using a hybrid coherent and squeezed states protocol
- Prospects and challenges for squeezing-enhanced optical atomic clocks
- One- and two-axis squeezing of atomic ensembles in optical cavities
- Vacuum spin squeezing
- Precision bounds for gradient magnetometry with atomic ensembles
- Phase locking a clock oscillator to a coherent atomic ensemble
- Floquet Engineering to Overcome No-Go Theorem of Noisy Quantum Metrology
- On-Line Estimation of Local Oscillator Noise and Optimisation of Servo Parameters in Atomic Clocks
- Impact of Non-Unitary Spin Squeezing on Atomic Clock Performance
- Entanglement-Enhanced Optical Atomic Clocks
- Heisenberg Limit Superradiant Superresolving Metrology
- Quantum metrology in local dissipative environments
- Robustness of Quantum-Enhanced Adaptive Phase Estimation
- Quantum metrology in the noisy intermediate-scale quantum era
- The quantum Allan variance
- Precision bounds in noisy quantum metrology
- Demonstration of a free space rubidium atomic clock with noise below the quantum projection limit
- Entanglement-enhanced phase estimation without prior phase information
- Bounding Quantum Advantages in Postselected Metrology
- Protected subspace Ramsey spectroscopy
- Quantum metrology enhanced by coherence-induced-driving in a cavity QED setup
- Precision bounds for noisy nonlinear quantum metrology
- Atomic clock locking with Bayesian quantum parameter estimation: scheme and experiment
- Improved absolute clock stability by the joint interrogation of two atomic states
- Quantum-enhanced differential atom interferometers and clocks with spin-squeezing swapping
- Improving quantum parameter estimation by monitoring quantum trajectories
- Non-stationary dynamics and dissipative freezing in squeezed superradiance
- Enhancing Quantum Metrology by Quantum Resonance Dynamics
- Enhancing Dynamic Range of Sub-Quantum-Limit Measurements via Quantum Deamplification
- Heisenberg-limited Bayesian phase estimation with low-depth digital quantum circuits
- Quantum sensing with ultracold simulators in lattice and ensemble systems: a review
- Cooperation between coherent control and noises in quantum metrology
- Quantum metrology in a lossless Mach-Zehnder interferometer using entangled photon inputs
- Single-shot Adaptive Measurement for Quantum-enhanced Metrology
- Quantum Fisher information matrix for unitary processes: closed relation for
- Generating Entanglement between Atomic Spins with Low-Noise Probing of an Optical Cavity
- Extending the dynamic range in quantum frequency estimation with sequential weak measurements