Voltage Fluctuations in a System of Capacitively Coupled Superconducting Nanowires

We theoretically investigate non-local fluctuation effects in a system of two capacitively coupled superconducting nanowires. We demonstrate that quantum phase slips in one of these nanowires induce voltage fluctuations in another one. These fluctuations are characterized by zero average voltage and non-vanishing voltage noise which exhibits a non-trivial behavior as a function of frequency and bias current. It would be interesting to test our predictions in modern experiments with superconducting nanowires.