Hamiltonian engineering with time-ordered evolution for unitary control of electron spins in semiconductor quantum dots

• URL: http://arxiv.org/abs/2402.08146v1
• Date: Tue, 13 Feb 2024 00:53:43 GMT
• Title: Hamiltonian engineering with time-ordered evolution for unitary control of electron spins in semiconductor quantum dots
• Authors: Bohdan Khromets, Zach D. Merino and Jonathan Baugh
• Abstract summary: We present a unitary control pulse design method for a scalable quantum computer architecture based on electron spins in lateral quantum dots. We employ simultaneous control of spin interactions and derive the functional forms of spin Hamiltonian parameter pulses for a universal set of 1- and 2-qubit logic gates.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present a unitary control pulse design method for a scalable quantum computer architecture based on electron spins in lateral quantum dots. We employ simultaneous control of spin interactions and derive the functional forms of spin Hamiltonian parameter pulses for a universal set of 1- and 2-qubit logic gates. This includes selective spin rotations with the weak local g-factor variations in the presence of the global oscillating field, and a Control-Phase operation with the simultaneous control of g-factors and exchange couplings. We outline how to generalize the control scheme to multiqubit gate operations and the case of constrained or imperfect control of the Hamiltonian parameters.

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