论文标题
量子谐波振荡器光谱分析仪
Quantum harmonic oscillator spectrum analyzers
论文作者
论文摘要
噪声的表征和抑制对于控制量子状态中的谐波振荡器至关重要。我们通过感应其对振幅调制的周期驱动器的响应，从低频到附近的量子谐波振荡器的噪声光谱从低频到附近。使用被困离子的运动，我们在实验上证明了两种不同的实现，对噪声从500 Hz到600 kHz的噪声结合了敏感性。我们采用我们的方法来测量以前未经频率范围内离子陷阱电位的固有噪声谱。
Characterization and suppression of noise are essential for the control of harmonic oscillators in the quantum regime. We measure the noise spectrum of a quantum harmonic oscillator from low frequency to near the oscillator resonance by sensing its response to amplitude modulated periodic drives with a qubit. Using the motion of a trapped ion, we experimentally demonstrate two different implementations with combined sensitivity to noise from 500 Hz to 600 kHz. We apply our method to measure the intrinsic noise spectrum of an ion trap potential in a previously unaccessed frequency range.
