When building a quantum sensor, there’s generally a tradeoff between then number of qubits measured in parallel and the quantum coherence and control fidelity. For continuous signals, it is favorable to increase the number of sensors and sacrifice fidelity. However, we recently showed theoretically and experimentally that if the signal is intermittent it is necessary to maintain near-unity fidelity.
To this end, we are developing an integrated control and measurement platform for parallel control of an array of trapped ions, each trapped in their own potential to limit crosstalk.
1. Quantum Sensing of Intermittent Stochastic Signals Sara Mouradian, Neil Glikin, Eli Megidish, Kai-Isaak Ellers, Hartmut Haeffner, arXiv:2010.03678