We propose protocols for the creation of useful entangled states in a system of spins collectively coupled to a bosonic mode, directly applicable to trapped-ion and cavity QED setups. The protocols use coherent manipulations of the resonant spin-boson interactions naturally arising in these systems to prepare spin squeezed states exponentially fast in time. The resonance condition harnesses the full spin-boson coupling and thus avoids the slower timescales when operating in the off-resonance regime. We demonstrate the robustness of the protocols by analyzing the effects of natural sources of decoherence in these systems and show their advantage compared to more standard slower approaches where entanglement is generated with off-resonant spin-boson interactions.

中文翻译：

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通过共振自旋玻色子耦合快速产生自旋挤压

我们提出了在与玻色子模式耦合的自旋系统中创建有用纠缠态的协议，直接适用于俘获离子和腔 QED 设置。该协议使用对这些系统中自然产生的共振自旋玻色子相互作用的相干操作，以指数速度及时准备自旋压缩态。共振条件利用完整的自旋玻色子耦合，从而避免在非共振状态下运行时较慢的时间尺度。我们通过分析这些系统中自然退相干源的影响来证明该协议的鲁棒性，并展示了与通过非共振自旋玻色子相互作用产生纠缠的更标准的较慢方法相比，它们的优势。