Quasiparticles in a Bose-Einstein condensate are sensitive to space-time distortions. Gravitational waves can induce transformations on the state of phonons that can be observed through quantum state discrimination techniques. We show that this method is highly robust to thermal noise and depletion. We derive a bound on the strain sensitivity that shows that the detection of waves in the kHz regime is not significantly affected by temperature in a wide range of parameters that are well within current experimental reach.

中文翻译：

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BEC声子重力波探测器中的热噪声

玻色-爱因斯坦凝聚物中的准粒子对时空畸变敏感。引力波可以引起声子状态的转变，这可以通过量子态判别技术观察到。我们表明，该方法对热噪声和损耗具有很高的鲁棒性。我们得出了应变灵敏度的界线，该界线表明，在kHz范围内的波检测在很大程度上不受当前实验范围内的各种参数的温度影响。