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arxiv: cond-mat/0304225 · v2 · submitted 2003-04-09 · ❄️ cond-mat.mes-hall · quant-ph

Pseudospin Quantum Computation in Semiconductor Nanostructures

classification ❄️ cond-mat.mes-hall quant-ph
keywords quantumcomputationnanostructuresprovidingpseudospinqubitsemiconductorallow
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We theoretically show that spontaneously interlayer-coherent bilayer quantum Hall droplets should allow robust and fault-tolerant pseudospin quantum computation in semiconductor nanostructures with voltage-tuned external gates providing qubit control and a quantum Ising Hamiltonian providing qubit entanglement. Using a spin-boson model we estimate decoherence to be small $(\sim 10^{-5})$.

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