To ensure a long-term quantum computational advantage, the quantum hardware should be
upgraded to withstand the competition of continuously improved classical algorithms and …

High-fidelity and rapid readout of a qubit state is key to quantum computing and
communication, and it is a prerequisite for quantum error correction. We present a readout …

Classifying many-body quantum states with distinct properties and phases of matter is one of
the most fundamental tasks in quantum many-body physics. However, due to the …

Demonstrating a quantum computational advantage will require high-fidelity control and
readout of multiqubit systems. As system size increases, multiplexed qubit readout becomes …

The Hilbert space of a physical qubit typically features more than two energy levels. Using
states outside the qubit subspace can provide advantages in quantum computation. To …

Despite the significant progress in superconducting quantum computation over the past
years, quantum state measurement still lags nearly an order of magnitude behind quantum …

We introduce a self-consistent tomography for arbitrary quantum nondemolition (QND)
detectors. Based on this, we build a complete physical characterization of the detector …

The past half century has witnessed the rapid development of integrated circuits from
several to billions of electronic components, where a crucial enabling method was the …

An efficient characterization of QND measurements is an important ingredient toward
certifying and improving the performance and scalability of quantum processors. In this work …

In the NISQ era, achieving large-scale quantum computing demands compact circuits to
mitigate decoherence and gate error accumulation. Quantum operations with diverse …