Communicating Properties of Quantum States over Classical Noisy Channels

Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung

Beitragende

Abstract

Transmitting information about quantum states over classical noisy channels is an important problem with applications to science, computing, and sensing. This task, however, poses fundamental challenges due to the exponential scaling of state space with system size. We introduce shadow tomography-based transmission with unequal error protection (STT-UEP), a novel communication protocol that enables efficient transmission of properties of quantum states, allowing decoder-side estimation of arbitrary local Pauli observables. Unlike conventional approaches requiring the transmission of a number of bits that is exponential in the number of qubits, STT-UEP achieves communication complexity that scales logarithmically with the number of observables, depending on the observable weight. The protocol exploits classical shadow tomography for measurement efficiency, and applies unequal error protection by encoding measurement bases with stronger channel codes than measurement outcomes. We provide theoretical guarantees on estimation accuracy as a function of the bit error probability of the classical channel, and validate the approach against several benchmarks via numerical results.

Details

OriginalspracheEnglisch
Seiten (von - bis)2158-2162
Seitenumfang5
FachzeitschriftIEEE communications letters
Jahrgang30
Frühes Online-DatumJuni 2026
PublikationsstatusVeröffentlicht - 2026
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0001-8469-9573/work/218580765

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • classical shadows, observables, Quantum communication, quantum states