Universal photonic quantum computation via time-delayed feedback.
basic_science · Level V
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- Record sourced from PubMed, PMID 29073057.
- Also identified by DOI 10.1073/pnas.1711003114 and PMC identifier 5664532.
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Abstract
We propose and analyze a deterministic protocol to generate two-dimensional photonic cluster states using a single quantum emitter via time-delayed quantum feedback. As a physical implementation, we consider a single atom or atom-like system coupled to a 1D waveguide with a distant mirror, where guided photons represent the qubits, while the mirror allows the implementation of feedback. We identify the class of many-body quantum states that can be produced using this approach and characterize them in terms of 2D tensor network states.