Quantum circuits based on coded qubits encoded in chirality of electron spin complexes in triple quantum dots

Abstract

We present a theory of quantum circuits based on logical qubits encoded in chirality of electron spin complexes in lateral gated semiconductor triple quantum dot molecules with one electron spin in each dot. Using microscopic Hamiltonian we show how to initialize, coherently control and measure the quantum state of a chirality based coded qubit using static in-plane magnetic field and voltage tuning of individual dots. The microscopic model of two interacting coded qubits is established and mapped to an Ising Hamiltonian, resulting in conditional two-qubit phase gate.

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Cited by in corpus (9)

• Three-electron spin qubits
• Herzberg Circuit and Berry's Phase in Chirality-based Coded Qubit in a Triangular Triple Quantum Dot
• Theory of electronic properties and quantum spin blockade in a gated linear triple quantum dot with one electron spin each
• Read-out and Dynamics of the Qubit Built on Three Quantum Dots
• Greenberger-Horne-Zeilinger States in Quantum Dot Molecule
• Thermal entanglement in a triple quantum dot system
• Entanglement in a three spin system controlled by electric and magnetic field
• Bias-induced chiral current and topological blockadein triple quantum dots
• Circular-polarization sensitive metamaterial based on triple quantum-dot molecules