Pseudospin Quantum Computation in Semiconductor Nanostructures

Scarola, V. W.; Park, K.; Sarma, S. Das

Pseudospin Quantum Computation in Semiconductor Nanostructures

Authors

Scarola, V. W.

Park, K.

Sarma, S. Das

Description

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 $(\sim 10^{-5})$.
5 pages, 3 figures New version to appear in PRL