Nonlinear interactions in discrete time crystals increase the system-size scaling exponent of quantum Fisher information approximately linearly with nonlinearity strength, enhancing sensing precision while preserving quadratic time scaling.
Experimental Realization of Criticality-Enhanced Global Quantum Sensing via Non- Equilibrium Dynamics,
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Fock-space lattices enable cell-dependent criticality that tunes quantum Fisher information scaling from standard to Heisenberg limits with broad sensing coverage via topological zero modes.
Modular non-Hermitian systems enrich skin effect and bulk-boundary breakdown while enhancing sensing performance near spectral topological phase transitions, including multi-parameter cases.
citing papers explorer
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Nonlinearity-enhanced Quantum Sensing in Discrete Time Crystal Probes
Nonlinear interactions in discrete time crystals increase the system-size scaling exponent of quantum Fisher information approximately linearly with nonlinearity strength, enhancing sensing precision while preserving quadratic time scaling.
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Cell-Dependent Criticality for Quantum Metrology
Fock-space lattices enable cell-dependent criticality that tunes quantum Fisher information scaling from standard to Heisenberg limits with broad sensing coverage via topological zero modes.
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Modular non-Hermitian topology and its application to critical sensing
Modular non-Hermitian systems enrich skin effect and bulk-boundary breakdown while enhancing sensing performance near spectral topological phase transitions, including multi-parameter cases.