Experimental Detection of Quantum Channels
Adeline Orieux (1), Linda Sansoni (1), Mauro Persechino (1), Paolo, Mataloni (1, 2), Matteo Rossi (3), Chiara Macchiavello (3) ((1), Dipartimento di Fisica, Sapienza Universit\`a di Roma, Italy, (2) Istituto, Nazionale di Ottica, Consiglio Nazionale delle Ricerche (INO-CNR)
TL;DR
This paper experimentally demonstrates efficient detection methods for quantum channels and gates, utilizing entangled photon states to identify properties of depolarizing channels and the CNOT gate.
Contribution
It introduces an optimal detection scheme for non entanglement breaking channels and extends detection to non separable maps using hyperentangled states.
Findings
Successful detection of depolarizing channels using entangled photons
Detection of CNOT gate properties with hyperentangled states
Enhanced understanding of quantum channel characterization
Abstract
We demonstrate experimentally the possibility of efficiently detecting properties of quantum channels and quantum gates. The optimal detection scheme is first achieved for non entanglement breaking channels of the depolarizing form and is based on the generation and detection of polarized entangled photons. We then demonstrate channel detection for non separable maps by considering the CNOT gate and employing two-photon hyperentangled states.
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