We measured the phase noise of Mirny output at 845 MHz.
A obvious noise peak at 1 kHz and its harmonics were found.
Such low frequency noise would sabotage our coherence time of the microwave transition.
We wonder are those noise found at other Mirny outputs and how to restrain it.
Phase noise of Mirny
According to Greg: "1kHz might come from unstable PLL loop filter"