Control and readout systems for superconducting quantum computing support real-time control and high-fidelity qubit-state discrimination. We examine when additional digital processing improves readout fidelity. A common baseline for dispersive readout uses a boxcar averager to compute a uniformly weighted average over...
Hans Johnson, Tanay Roy, Leonardo Bove et al.· 0 citations
Entangling distant stationary qubits—such as superconducting qubits, color centers, trapped ions, and phononic modes—commonly relies on flying photons transmitted through noisy channels. The fidelity of remote entanglement is severely degraded by channel noise. While entanglement purification can theoretically mitiga...
Jing Wu, Chang-Qing Wang, Andrew R. Cameron et al.· Quantum Science and Technolo...· 0 citations
Long-distance entanglement distribution is hindered by photon loss in optical fibers and the nocloning theorem. Optical quantum repeater (QR) protocols rely on Bell state measurements (BSMs), they are intrinsically limited to probabilistic photon operations and fail 50% of the time. We propose a hybrid approach to buil...
Francesco Fiorini, Jing Wu, Andrew R. Cameron et al.· Physical Review A· 0 citations
Approximate quantum error correction (AQEC) extends the framework of discrete- and continuous-variable quantum error correction beyond the Knill-Laflamme (KL) conditions, where the recovery performance is quantified by entanglement fidelity. Recent studies have enabled efficient evaluation of near-optimal entanglement...
Jing Wu, Michele Grossi, D. Kurkcuoglu et al.· 0 citations
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