Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics

• URL: http://arxiv.org/abs/2010.07127v1
• Date: Wed, 14 Oct 2020 14:33:34 GMT
• Title: Entanglement transfer, accumulation and retrieval via quantum-walk-based qubit-qudit dynamics
• Authors: Taira Giordani and Luca Innocenti and Alessia Suprano and Emanuele Polino and Mauro Paternostro and Nicol\`o Spagnolo and Fabio Sciarrino and Alessandro Ferraro
• Abstract summary: Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
• Score: 50.591267188664666
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies. Achieving such non-classical high-dimensional resources will potentially unlock enhanced capabilities for quantum cryptography, communication and computation. We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based {\it transfer \& accumulate} mechanism involving coin and walker degrees of freedom. The choice of investigating quantum walks is motivated by their generality and versatility, complemented by their successful implementation in several physical systems. Hence, given the cross-cutting role of quantum walks across quantum information, our protocol potentially represents a versatile general tool to control high-dimensional entanglement generation in various experimental platforms. In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.

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