A notch for a narrow frequency band of a few per cent or even less normally requires close-tolerance components. At least, that’s what we thought until we came across a special opamp IC from Maxim. In ...

The circuit was designed with the combination of high pass filter and low pass filter to create a notch filter circuit. High Pass Filter – an electronic circuit that allows the passage of high ...

Figure 1: Singlet–triplet qubit interacting with a nuclear spin bath. Figure 3: Revival of coherence due to decoupling from nuclear Larmor precession. Figure 4: Effect of magnetic field and τ on qubit ...