2018/09/25 by Oussama Houhou, Houhou, Oussama, Darren W. Moore +5 · 2 citations
Computer Science · Engineering · Physics and Astronomy · #FOS: Physical sciences #Mechanical and Optical Resonators #Neural Networks and Reservoir Computing #Photonic and Optical Devices #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.1809.09733
19 pages, 10 figures
openalex publication_date 2018/09/25 · arxiv created 2021/12/01 · arxiv updated 2021/12/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Universal quantum computation encoded over continuous variables can be achieved via Gaussian measurements acting on entangled non-Gaussian states. However, due to the weakness of available nonlinearities, generally these states can only be prepared conditionally, potentially with low probability. Here we show how universal quantum computation could be implemented unconditionally using an integrated platform able to sustain both linear and quadratic optomechanical-like interactions. Specifically, considering cavity opto- and electro-mechanical systems, we propose a realisation of a driven-dissipative dynamics that deterministically prepares the required non-Gaussian cluster states -- entangled squeezed states of multiple mechanical oscillators suitably interspersed with cubic-phase states. We next demonstrate how arbitrary Gaussian measurements on the cluster nodes can be performed by continuously monitoring the output cavity field. Finally, the feasibility requirements of this approach are analysed in detail, suggesting that its building blocks are within reach of current technology.