Researchers at IIT Patna achieved -14.57 dB spin squeezing in a ring BEC using interaction quenches, enabling unprecedented precision for matter-wave interferometry and quantum sensing applications.

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Demonstrated ~14.6 dB spin squeezing in Bose-Einstein condensates via fractional-revival dynamics combined with controlled interaction quenching, achieving sub-SQL phase sensitivity for quantum-enhanced interferometry.

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Bayesian optimization of collective readouts combining dipole and quadrupole operators enables sub-SQL sensitivity in frequency-disordered spin ensembles, recovering metrological advantage where conventional squeezing fails.

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Vacuum Rabi oscillations generate spin squeezing through geometric focusing on the Bloch sphere, achieving N^-1/3 scaling and enabling 15 dB squeezing in cavity-coupled ¹⁷¹Yb atoms for precision quantum sensing.

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Generalized echo squeezing outperforms conventional protocols in resisting spontaneous emission in strontium-88 sensors. Surprisingly, spontaneous emission suppresses quantum noise—challenging conventional assumptions about decoherence.

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Researchers demonstrate how quantum correlations like spin squeezing emerge naturally in light-emitter ensembles despite environmental decoherence, enabling efficient prediction of quantum states without expensive numerical simulations.

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Researchers at Tsinghua & Hainan Universities used rotor-spin-wave theory to optimise a single transverse field in 2D dipolar systems, exceeding the two-axis-twisting benchmark for spin squeezing while maintaining robustness under dephasing noise.

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