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

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

2010-04-08

arxiv.org/abs/1004.1344v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

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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