2005/08/31 by Mohan Sarovar, Hsi‐Sheng Goan, Hsi-Sheng Goan +3 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.other #quant-ph
paper · pdf · doi:10.1103/physreva.72.062327
published as Phys. Rev. A, 72, 062327 (2005) · 11 pages, 6 figures. Typos fixed. Published version
openalex publication_date 2005/12/27 · arxiv created 2005/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Circuit QED is a promising solid-state quantum computing architecture. It also has excellent potential as a platform for quantum control---especially quantum feedback control---experiments. However, the current scheme for measurement in circuit QED is low efficiency and has low signal-to-noise ratio for single-shot measurements. The low quality of this measurement makes the implementation of feedback difficult, and here we propose two schemes for measurement in circuit QED architectures that can significantly improve signal-to-noise ratio and potentially achieve quantum-limited measurement. Such measurements would enable the implementation of quantum feedback protocols and we illustrate this with a simple entanglement-stabilization scheme.