Decoherence and interferometric sensitivity of boson sampling in superconducting resonator networks
Samuel Goldstein, Simcha Korenblit, Ydan Bendor, Hao You, Michael R. Geller, Nadav Katz
DOI 10.1103/PhysRevB.95.020502 · Physical Review B
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Abstract
Multiple bosons undergoing coherent evolution in a coupled network of sites constitute a so-called quantum walk system. The simplest example of such a two-particle interference is the celebrated Hong-Ou-Mandel interference. When scaling to larger boson numbers, simulating the exact distribution of bosons has been shown, under reasonable assumptions, to be exponentially hard. We analyze the feasibility and expected performance of a globally connected superconducting resonator based quantum walk system, using the known characteristics of state-of-the-art components. We simulate the sensitivity of such a system to decay processes and to perturbations and compare with coherent input states.
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