Samuel Goldstein

Compact Itinerant Microwave Photonics with Superconducting High-Kinetic Inductance Microstrips

  1. Samuel Goldstein,
  2. Guy Pardo,
  3. Naftali Kirsh,
  4. Niklas Gaiser,
  5. Ciprian Padurariu,
  6. Björn Kubala,
  7. Joachim Ankerhold,
  8. and Nadav Katz
Microwave photonics is a remarkably powerful system for quantum simulation and technologies, but its integration in superconducting circuits, superior in many aspects, is constrained
by the long wavelengths and impedance mismatches in this platform. We introduce a solution to these difficulties via compact networks of high-kinetic inductance microstrip waveguides and coupling wires with strongly reduced phase velocities. We demonstrate broadband capabilities for superconducting microwave photonics in terms of routing, emulation and generalized linear and nonlinear networks.
arxiv pdf

Decoherence and Interferometric Sensitivity of BosonSampling in Superconducting Networks

  1. Samuel Goldstein,
  2. Simcha Korenblit,
  3. Ydan Bendor,
  4. Hao You,
  5. Michael R. Geller,
  6. and Nadav Katz
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.
arxiv pdf