Non-Markovian strong coupling in a bosonic probe produces non-monotonic quantum Fisher information with a finite optimal interrogation time for thermometry, while squeezed states give transient gains and strong coupling softens low-T error scaling from exponential to polynomial.
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quant-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Embedding squeezing in the system Hamiltonian and leveraging environmental memory induces higher-order QFI time dependence and information backflow that can restore or exceed unitary precision in noisy frequency estimation.
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Non-equilibrium quantum thermometry with bosonic samples
Non-Markovian strong coupling in a bosonic probe produces non-monotonic quantum Fisher information with a finite optimal interrogation time for thermometry, while squeezed states give transient gains and strong coupling softens low-T error scaling from exponential to polynomial.
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Beating noise in frequency estimation with squeezing and memory in continuous-variable systems
Embedding squeezing in the system Hamiltonian and leveraging environmental memory induces higher-order QFI time dependence and information backflow that can restore or exceed unitary precision in noisy frequency estimation.