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In a recent publication in the journal Science Advances, scientists from Italy and Portugal demonstrate novel techniques to certify the quantumness of photonic quantum processors. The work is the latest result of a long-standing collaboration between Sapienza University, International Iberian Nanotechnology Laboratory (INL), Consiglio Nazionale delle Ricerche - Istituto di Fotonica e Nanotecnologie (CNR-IFN), and Politecnico di Milano. The paper, entitled Experimental certification of contextuality, coherence and dimension in a programmable universal photonic processor, shows how to certify various quantum properties of devices of increasing complexity, such as high-dimensional integrated optical circuits.
The news has been reported in a press release, published by Sapienza University of Rome and Le Scienze.
The full article by T. Giordani, R. Wagner, C. Esposito, A. Camillini, F. Hoch, G. Carvacho, C. Pentangelo, F. Ceccarelli, S. Piacentini, A. Crespi, N. Spagnolo, R. Osellame, E. F. Galvão and F. Sciarrino, Experimental certification of contextuality, coherence, and dimension in a programmable universal photonic processor, is available here.