Martin Gärttner

Benchmarking the quality of multiplexed qubit readout beyond assignment fidelity

2025 · arXiv (Cornell University)

The accurate measurement of quantum two-level objects (qubits) is crucial for developing quantum computers. Over the last decade, the measure of choice for benchmarking readout routines for superconducting qubits has been assignment fidelity. However, this …

Interferometric detection of continuous-variable entanglement using two states

2025 · Physical Review A

The efficient witnessing and certification of entanglement is necessitated by its ubiquitous use in various aspects of quantum technologies. In the case of continuous-variable bipartite systems, the Shchukin-Vogel hierarchy gives necessary conditions for separability in …