Any temperature-dependent unitary driving on a thermalized quantum probe universally boosts its quantum Fisher information for thermometry above the static equilibrium value via a positive kernel of information currents.
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A theoretical framework expresses the electron-photon scattered state via the luminescence spectrum and uses subsystem purity plus an EPR-type criterion to distinguish wave-like, particle-like, and classical regimes of spatial entanglement in coherent cathodoluminescence.
A protocol with two generalized measurements prepares versatile probe states from thermal qubits to enhance quantum Fisher information for decay rate and temperature estimation in amplitude damping channels, deriving an analytical link to thermodynamic susceptibilities and Hamiltonian variance valid
Quantum sensing with undetected photons achieves optimal multiparameter estimation precision using a single phase shift and multipass count scaling as the inverse log of transmission.
A Monte Carlo method maps quantum Fisher information lower bounds for explicit many-body wavefunctions to classical expectation values, enabling efficient computation under decoherence for Jastrow-Gutzwiller states.
Higher thermodynamic efficiency in preparing non-equilibrium spin states in atomic vapors directly improves the quantum Fisher information bound on magnetometer sensitivity.
citing papers explorer
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Shake before use: universal enhancement of quantum thermometry by unitary driving
Any temperature-dependent unitary driving on a thermalized quantum probe universally boosts its quantum Fisher information for thermometry above the static equilibrium value via a positive kernel of information currents.
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Electron-Photon Spatial Entanglement in Coherent Cathodoluminescence
A theoretical framework expresses the electron-photon scattered state via the luminescence spectrum and uses subsystem purity plus an EPR-type criterion to distinguish wave-like, particle-like, and classical regimes of spatial entanglement in coherent cathodoluminescence.
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Versatile probe state preparation via generalized measurements for quantum sensing and thermometry
A protocol with two generalized measurements prepares versatile probe states from thermal qubits to enhance quantum Fisher information for decay rate and temperature estimation in amplitude damping channels, deriving an analytical link to thermodynamic susceptibilities and Hamiltonian variance valid
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Ultimate sensitivity of multiparameter estimation in quantum sensing with undetected photons
Quantum sensing with undetected photons achieves optimal multiparameter estimation precision using a single phase shift and multipass count scaling as the inverse log of transmission.
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Quantum Fisher Information under decoherence with explicit wavefunctions
A Monte Carlo method maps quantum Fisher information lower bounds for explicit many-body wavefunctions to classical expectation values, enabling efficient computation under decoherence for Jastrow-Gutzwiller states.
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Thermodynamical aspects of optically pumped dense atomic medium
Higher thermodynamic efficiency in preparing non-equilibrium spin states in atomic vapors directly improves the quantum Fisher information bound on magnetometer sensitivity.