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- Johann Radon Institute for Computational and Applied MathematicsAT101 papers
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116 papers · 1 filter
Quantum metrology with undetected mid-infrared photons for applied non-destructive testing
Paul Gattinger, Andreas W. Schell, Maja Buchegger +2
Metrology with undetected photons is an emerging technique that leverages quantum effects and photon correlations (entanglement) to retrieve valuable information in a target spectr…
One, Two, Three: One empirical evaluation of a two-copy shadow tomography scheme with triple efficiency
Viet T. Tran, Richard Kueng
Shadow tomography protocols have recently emerged as powerful tools for efficient quantum state learning, aiming to reconstruct expectation values of observables with fewer resourc…
Fast quantum measurement tomography with optimal error bounds
Leonardo Zambrano, Sergi Ramos-Calderer, Richard Kueng
We present a two-step protocol for quantum measurement tomography that is light on classical co-processing cost and still achieves optimal sample complexity. Given measurement data…
In the shadow of the Hadamard test: Using the garbage state for good and further modifications
Paul K. Faehrmann, Jens Eisert, Richard Kueng
The Hadamard test is naturally suited for the intermediate regime between the current era of noisy quantum devices and complete fault tolerance. Its applications use measurements o…
Ability of entanglement and purity to help to detect systematic experimental errors
Julia Freund, Francesco Basso Basset, Tobias M. Krieger +12
Measurements are central in all quantitative sciences, and a fundamental challenge is to make observations without systematic measurement errors. This holds in particular for quant…
Tight and self-testing multipartite quantum Bell inequalities from the renormalization group
Paolo Abiuso, Julian Fischer, Miguel Navascués
In past work, the concept of connectors was introduced: directed tensors with the property that any contraction thereof defines a multipartite quantum Bell inequality, i.e., a line…