89 citations · 234 across the 4 of their papers we have counts for
4 papers
Measurement-based Synthesis of multi-qubit Entangled States in Superconducting Cavity QED
Ferdinand Helmer, Florian Marquardt
Entangled multi-qubit states may be generated through a dispersive collective QND measurement of superconducting qubits coupled to a microwave transmission line resonator. Using th…
Quantum Zeno Effect in the Quantum Non-Demolition Detection of Itinerant Photons
Ferdinand Helmer, Matteo Mariantoni, Enrique Solano +1
We analyze the detection of itinerant photons using a quantum non-demolition (QND) measurement. We show that the backaction due to the continuous measurement imposes a limit on the…
Two-dimensional cavity grid for scalable quantum computation with superconducting circuits
Ferdinand Helmer, Matteo Mariantoni, Austin G. Fowler +3
Superconducting circuits are among the leading contenders for quantum information processing. This promising avenue has been strengthened with the advent of circuit quantum electro…
Self-reproduction in k-inflation
Ferdinand Helmer, Sergei Winitzki
We study cosmological self-reproduction in models of inflation driven by a scalar field with a noncanonical kinetic term (-inflation). We develop a general criterion for the…