Generation of multipartite entanglement between spin-1 particles with bifurcation-based quantum annealing

• URL: http://arxiv.org/abs/2202.07210v1
• Date: Tue, 15 Feb 2022 06:03:08 GMT
• Title: Generation of multipartite entanglement between spin-1 particles with bifurcation-based quantum annealing
• Authors: Yuichiro Matsuzaki, Takashi Imoto, Yuki Susa
• Abstract summary: We propose a scheme to generate multipartite entanglement, namely GHZ states, between spin-1 particles. Due to the dipole-dipole interactions between the spin-1 particles, we can prepare the GHZ state after performing this protocol.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum annealing is a way to solve a combinational optimization problem where quantum fluctuation is induced by transverse fields. Recently, a bifurcation-based quantum annealing with spin-1 particles was suggested as another mechanism to implement the quantum annealing. In the bifurcation-based quantum annealing, each spin is initially prepared in $|0\rangle$, let this state evolve by a time-dependent Hamiltonian in an adiabatic way, and we find a state spanned by $|\pm 1\rangle$ at the end of the evolution. Here, we propose a scheme to generate multipartite entanglement, namely GHZ states, between spin-1 particles by using the bifurcation-based quantum annealing. We gradually decrease the detuning of the spin-1 particles while we adiabatically change the amplitude of the external driving fields. Due to the dipole-dipole interactions between the spin-1 particles, we can prepare the GHZ state after performing this protocol. We discuss possible implementations of our scheme by using nitrogen vacancy centers in diamond.

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