Analytical second-quantized treatment shows sub-shot-noise atom interferometry requires balancing quasi-Bragg and velocity-selective regimes, with partial mitigation via input-state optimization.
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A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
Dark states are derived for two-to-four atom cases and the single-excitation subspace of general N-atom cavity-Rydberg systems, with a characterization method via state populations.
citing papers explorer
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Balancing Quasi-Bragg Regime and Velocity Selectivity in Quantum-Enhanced Atom Interferometry
Analytical second-quantized treatment shows sub-shot-noise atom interferometry requires balancing quasi-Bragg and velocity-selective regimes, with partial mitigation via input-state optimization.
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Instability-Enhanced Quantum Sensing with Tunable Multibody Interactions
A quartic extension of the twisting-and-turning Hamiltonian generates new unstable fixed points that accelerate short-time amplification of quantum fluctuations, yielding enhanced sensitivity within accessible coherence times.
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Harnessing dark states: coherent control in coupled cavity-Rydberg-atom systems
Dark states are derived for two-to-four atom cases and the single-excitation subspace of general N-atom cavity-Rydberg systems, with a characterization method via state populations.