A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pairwise tomography networks for many-body quantum systems

Julkaisun tekijät: Guillermo García-Pérez, Matteo A. C. Rossi, Boris Sokolov, Elsi-Mari Borrelli, Sabrina Maniscalco

Kustantaja: American Physical Society

Julkaisuvuosi: 2020

Journal: Physical Review Research

Volyymi: 2

Julkaisunumero: 2

Sivujen määrä: 9

eISSN: 2643-1564

DOI: http://dx.doi.org/10.1103/PhysRevResearch.2.023393


We introduce the concept of pairwise tomography networks to characterize quantum properties in many-body
systems and demonstrate an efficient protocol to measure them experimentally. Pairwise tomography networks
are generators of multiplex networks where each layer represents the graph of a relevant quantifier, such as,
e.g., concurrence, quantum discord, purity, quantum mutual information, or classical correlations. We propose
a measurement scheme to perform two-qubit tomography of all pairs showing exponential improvement in the
number of qubits N with respect to previously existing methods. We illustrate the usefulness of our approach
by means of several examples revealing its potential impact to quantum computation, communication, and
simulation. We perform a proof-of-principle experiment demonstrating pairwise tomography networks of W
states on IBM Q devices.
DOI: 10.1103/PhysRevResearch.2.023393

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Last updated on 2021-24-06 at 12:14