A coherent echo protocol combining one-axis twisting and QND measurement enhances collective spin squeezing and encodes the entanglement in two magnetic sublevels for metrology use.
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4 Pith papers cite this work. Polarity classification is still indexing.
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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.
Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.
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.
citing papers explorer
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Enhancing collective spin squeezing via one-axis twisting echo control of individual atoms
A coherent echo protocol combining one-axis twisting and QND measurement enhances collective spin squeezing and encodes the entanglement in two magnetic sublevels for metrology use.
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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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Multipartite entanglement structure of monitored quantum circuits
Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.
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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.