Levitated nanomechanical oscillator senses 10 zeptonewton forces below quantum zero-point fluctuation by preparing a squeezed state through potential modulation and detecting force via time-of-flight displacement.
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A disorder marker derived from central moments of disorder distributions classifies quantum probes and exhibits quadratic dependence on weak identical disorder strength, enabling estimation of maximum tolerable disorder directly from the clean probe Hamiltonian and initial state.
Crystal polaritons form via strong collective coupling of periodic emitter arrays to metasurface resonances, enabling orders-of-magnitude higher quantum light generation efficiency than conventional nonlinear metasurfaces.
Prethermal discrete time crystals in driven dipolar 13C spins enable frequency-selective AC magnetic field sensing with up to three orders of magnitude lifetime extension via resonant response.
Analytical QFI calculations for finite-size spin chain at strong coupling show thermometry advantages at low T and large errors from neglecting FS effects or using phenomenological models.
Machine learning on time traces of repetitive qubit readouts improves fidelity over threshold photon counting by identifying back-action.
Cavity-enhanced tripartite interactions are proposed to enable direct extraction of photon and phonon vacuum fluctuations without free parameters and to produce high-occupancy nonclassical quantum emitters via decay-enhanced blockade.
Quantum Fisher information calculations for nonlinear MZI with Gaussian, squeezed-number, and cat states indicate that shot-noise limits do not apply, with squeezed vacuum optimal.
citing papers explorer
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Time-of-flight force sensing below the quantum zero-point fluctuation
Levitated nanomechanical oscillator senses 10 zeptonewton forces below quantum zero-point fluctuation by preparing a squeezed state through potential modulation and detecting force via time-of-flight displacement.
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Robust quantum metrology using disordered probes
A disorder marker derived from central moments of disorder distributions classifies quantum probes and exhibits quadratic dependence on weak identical disorder strength, enabling estimation of maximum tolerable disorder directly from the clean probe Hamiltonian and initial state.
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Close encounters between periodic light and periodic arrays of quantum emitters
Crystal polaritons form via strong collective coupling of periodic emitter arrays to metasurface resonances, enabling orders-of-magnitude higher quantum light generation efficiency than conventional nonlinear metasurfaces.
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Sensing with discrete time crystals
Prethermal discrete time crystals in driven dipolar 13C spins enable frequency-selective AC magnetic field sensing with up to three orders of magnitude lifetime extension via resonant response.
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Finite-Size Effects in Quantum Metrology at Strong Coupling: Microscopic vs Phenomenological Approaches
Analytical QFI calculations for finite-size spin chain at strong coupling show thermometry advantages at low T and large errors from neglecting FS effects or using phenomenological models.
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Repetitive Readout Enhanced by Machine Learning
Machine learning on time traces of repetitive qubit readouts improves fidelity over threshold photon counting by identifying back-action.
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Unveiling Vacuum Fluctuations and Nonclassical States with Cavity-Enhanced Tripartite Interactions
Cavity-enhanced tripartite interactions are proposed to enable direct extraction of photon and phonon vacuum fluctuations without free parameters and to produce high-occupancy nonclassical quantum emitters via decay-enhanced blockade.
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Conclusive nonlinear phase sensitivity limit for a Mach-Zehnder interferometer with single-mode non-vacuum inputs
Quantum Fisher information calculations for nonlinear MZI with Gaussian, squeezed-number, and cat states indicate that shot-noise limits do not apply, with squeezed vacuum optimal.