Phonon mediated non-equilibrium correlations and entanglement between distant semiconducting qubits

• URL: http://arxiv.org/abs/2011.13394v1
• Date: Thu, 26 Nov 2020 17:14:58 GMT
• Title: Phonon mediated non-equilibrium correlations and entanglement between distant semiconducting qubits
• Authors: Di Yu, Zhi-Meng Guo, Guang-Wei Deng
• Abstract summary: We study non-equilibrium correlations and entanglement between semiconductor qubits in a one-dimensional coupled-mechanical-resonator chain. The results suggest that highly tunable correlations and entanglement can be generated by phonon-qubit hybrid system.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We theoretically study the non-equilibrium correlations and entanglement between distant semiconductor qubits in a one-dimensional coupled-mechanical-resonator chain. Each qubit is defined by a double quantum dot (DQD) and embedded in a mechanical resonator. The two qubits can be coupled, correlated and entangled through phonon transfer along the resonator chain. We calculate the non-equilibrium correlations and steady-state entanglement at different phonon-phonon coupling rates, and find a maximal steady entanglement induced by a population inversion. The results suggest that highly tunable correlations and entanglement can be generated by phonon-qubit hybrid system, which will contribute to the development of mesoscopic physics and solid-state quantum computation.

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