Quantum State Transfer Between NV Center -- $13_C$ System Coupled To A CPW Cavity

• URL: http://arxiv.org/abs/2105.11507v1
• Date: Mon, 24 May 2021 19:15:57 GMT
• Title: Quantum State Transfer Between NV Center -- $13_C$ System Coupled To A CPW Cavity
• Authors: Soubhik Pal and Chiranjib Mitra
• Abstract summary: We propose a theoretical description for such a quantum state transfer from a cavity to a nearest neighbour $13_C$ nuclear spin. It shows great potential in realizing scalable quantum networks and quantum simulation.
• Score: 0.0
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Quantum state transfer is a very important process in building a quantum network when information from flying Qubit is transferred to the stationary Qubit in a node via a quantum state transfer. NV centers due to their long coherence time and the presence of nearby $13_C$ nuclear spin is an excellent candidate for multi-Qubit quantum memory. Here we propose a theoretical description for such a quantum state transfer from a cavity to a nearest neighbour $13_C$ nuclear spin of a single Nitrogen vacancy center in diamond; it shows great potential in realizing scalable quantum networks and quantum simulation. The full Hamiltonian was considered with the zeroth-order and interaction terms in the Hamiltonian and the theory of effective hamiltonian theory was applied. We study the time evolution of the combined cavity-$13_C$ state through analytical calculation and simulation using QuTip. Graphs for state transfer and fidelity measurement are presented here. We show that our theoretical description verifies a high fidelity quantum state transfer from the cavity to $13_C$ center by choosing suitable system parameters.

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