Rescaling Interactions for Quantum Control

Rescaling Interactions for Quantum Control

A powerful control method in experimental quantum computing is the use of spin echoes, employed to select a desired term in the system's internal Hamiltonian, while refocusing others. Here, we address a more general problem, describing a method to not only turn on and off particular interaction...

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Veröffentlicht in:Physical review applied 2020-03, Vol.13 (3), Article 034002
Hauptverfasser: Bhole, Gaurav, Tsunoda, Takahiro, Leek, Peter J., Jones, Jonathan A.
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creator Bhole, Gaurav
Tsunoda, Takahiro
Leek, Peter J.
Jones, Jonathan A.
description A powerful control method in experimental quantum computing is the use of spin echoes, employed to select a desired term in the system's internal Hamiltonian, while refocusing others. Here, we address a more general problem, describing a method to not only turn on and off particular interactions but also to rescale their strengths so that we can generate any desired effective internal Hamiltonian. We propose an algorithm based on linear programming for achieving time-optimal rescaling solutions in fully coupled systems of tens of qubits, which can be modified to obtain near-time-optimal solutions for rescaling systems with hundreds of qubits.
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Physics
Physics, Applied
Science & Technology
title Rescaling Interactions for Quantum Control
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