We show that entangled measurements provide an exponential advantage in sample
complexity for Pauli channel estimation, which is both a fundamental problem and a …

Classical shadows provide a noise-resilient and sample-efficient method for learning
quantum system properties, relying on a user-specified unitary ensemble. What is the …

Errors in quantum logic gates are usually modeled by quantum process matrices (CPTP
maps). But process matrices can be opaque and unwieldy. We show how to transform the …

The inevitable presence of decoherence effects in systems suitable for quantum
computation necessitates effective error-correction schemes to protect information from …

Quantum metrology overcomes standard precision limits and plays a central role in science
and technology. Practically, it is vulnerable to imperfections such as decoherence. Here we …

Interferometry with quantum light is known to provide enhanced precision for estimating a
single phase. However, depending on the parameters involved, the quantum limit for the …

Entanglement-assisted quantum communication employs preshared entanglement between
sender and receiver as a resource. We apply the same framework to quantum metrology …