Pseudospin Quantum Computation in Semiconductor Nanostructures

Details Pseudospin Quantum Computation in Semiconductor Nanostructures Pseudospin Quantum Computation in Semiconductor Nanostructures

2003-04-09

arxiv.org/abs/cond-mat/0304225v2

Phys. Rev. Lett. 91, 167903 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures New version to appear in PRL

Scientific paper

10.1103/PhysRevLett.91.167903

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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