The effect of component variations on the gate fidelity in linear optical networks
arXiv:1607.08035 · doi:10.1103/PhysRevA.94.022326
Abstract
We investigate the effect of variations in beam splitter transmissions and path length differences in the nonlinear sign gate that is used for linear optical quantum computing. We identify two implementations of the gate, and show that the sensitivity to variations in their components differs significantly between them. Therefore, circuits that require a precision implementation may benefit from additional circuit analysis of component variations to identify the most practical implementation. We suggest possible routes to efficient circuit analysis in terms of quantum parameter estimation.
6 pages, 6 figures
References in corpus (6)
- Manipulating multi-photon entanglement in waveguide quantum circuits
- Geometric derivation of the quantum speed limit
- Optimal photons for quantum information processing
- Asymptotics of random density matrices
- Frequency and temporal effects in linear optical quantum computing
- Error models for mode-mismatch in linear optics quantum computing