Non-Markovianity in High-Dimensional Open Quantum Systems using Next-generation Multicore Optical Fibers

• URL: http://arxiv.org/abs/2308.00094v1
• Date: Mon, 31 Jul 2023 19:14:32 GMT
• Title: Non-Markovianity in High-Dimensional Open Quantum Systems using Next-generation Multicore Optical Fibers
• Authors: Santiago Rojas-Rojas and Daniel Mart\'inez and Kei Sawada and Luciano Pereira and Stephen P. Walborn and Esteban S. G\'omez and Nadja K. Bernardes and Gustavo Lima
• Abstract summary: We study a high dimensional non-Markovian open quantum system in a multi-core optical fiber. A better understanding of the phase noise in multi-core fibers could improve the stability and quality of several real-world communication protocols.
• Score: 1.5068836198327449
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: With the advent of quantum technology, the interest in communication tasks assisted by quantum systems has increased both in academia and industry. Nonetheless, the transmission of a quantum state in real-world scenarios is bounded by environmental noise, so that the quantum channel is an open quantum system. In this work, we study a high dimensional non-Markovian open quantum system in a multi-core optical fiber by characterizing the environmental interaction as quantum operations, which here correspond to phase flips between pairs of computational basis states. The experimental platform is currently state-of-the-art for space division multiplexing optical fiber communication, which can serve as a robust channel for high-dimensional quantum communication. To test the channel, we perform a quantum communication task in the prepare-and-measure scenario. The non-Markovian nature of the system is demonstrated by implementing a Quantum Vault protocol. A better understanding of the phase noise in multi-core fibers could improve the stability and quality of several real-world communication protocols since they are a prime candidate to increase the telecom data transmission rate worldwide.

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