Robust quantum enhanced phase estimation in a multimode interferometer

Abstract

By exploiting the correlation properties of ultracold atoms in a multi-mode interferometer, we show how quantum enhanced measurement precision can be achieved with strong robustness to particle loss. While the potential for enhanced measurement precision is limited for even moderate loss in two-mode schemes, multi-mode schemes can be more robust. A ring interferometer for sensing rotational motion with non-interacting fermionic atoms can realize an uncertainty scaling of $1/(N\sqrt{\eta })$ for $N$ particles with a fraction $\eta$ remaining after loss, which undercuts the shot noise limit of two mode interferometers. A second scheme with strongly-interacting bosons achieves a comparable measurement precision and improved readout.

5 pages, 2 figures, replaced by final version

References in corpus (12)

• Advances in Quantum Metrology
• General framework for estimating the ultimate precision limit in noisy quantum-enhanced metrology
• Entanglement-free Heisenberg-limited phase estimation
• Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
• Optimal Quantum Phase Estimation
• Scaling laws for precision in quantum interferometry and bifurcation landscape of optimal state
• Phase estimation without a priori knowledge in the presence of loss
• Quantum-limited metrology with product states
• Stable macroscopic quantum superpositions
• Robust Mesoscopic Superposition of Strongly Correlated Ultracold Atoms
• Simulating strongly correlated multiparticle systems in a truncated Hilbert space
• Engineering mesoscopic superpositions of superfluid flow

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