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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Tuning quadrupolar interactions in a spin-1 chain reveals a conserved quantity at the SU(3) point that limits accessible states and alters quench dynamics of magnetization, entanglement, and correlations.
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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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Quantum quenches in a spin-1 chain with tunable symmetry
Tuning quadrupolar interactions in a spin-1 chain reveals a conserved quantity at the SU(3) point that limits accessible states and alters quench dynamics of magnetization, entanglement, and correlations.