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Quantum photonics for secure quantum and classical computing (Conference Presentation)
Author(s): Philip Walther

Paper Abstract

The precise quantum control of single photons, together with the intrinsic advantage of being mobile make optical quantum system ideally suited for delegated quantum information tasks, reaching from well-established quantum cryptography to quantum clouds and quantum computer networks. Here I will present that the exploit of quantum photonics allows for a variety of quantum-enhanced data security for quantum and classical computers. First, I will present a homomorphic-encrypted quantum random walk using single-photon states and non-birefringent integrated optics. The client encrypts their input state in the photons’ polarization degree of freedom, while the server performs the computation using the path degree of freedom. Then I will briefly discuss the realization of a feasible hybrid classical-quantum technology, which shows promising new applications of readily available quantum photonics technology for secure classical computing by enabling probabilistic one-time programs.

Paper Details

Date Published: 18 October 2019
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Proc. SPIE 11167, Quantum Technologies and Quantum Information Science V, 1116708 (18 October 2019); doi: 10.1117/12.2534521
Show Author Affiliations
Philip Walther, Univ. Wien (Austria)


Published in SPIE Proceedings Vol. 11167:
Quantum Technologies and Quantum Information Science V
Mark T. Gruneisen; Miloslav Dusek; Paul M. Alsing; John G. Rarity, Editor(s)

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