Abstract
We investigate the possibility to have electron-pairs in decoherence-free subspace (DFS), by means of the quantum-dot cellular automata (QCA) and single-spin rotations, to deterministically carry out a universal quantum computation with high-fidelity. We show that our QCA device with electrons tunneling in two dimensions is very suitable for DFS encoding, and argue that our design favors a scalable quantum computation robust to collective dephasing errors.
| Original language | English |
|---|---|
| Pages (from-to) | 977-986 |
| Number of pages | 10 |
| Journal | Quantum Information and Computation |
| Volume | 8 |
| Issue number | 10 |
| Publication status | Published - 2008 Nov 1 |
All Science Journal Classification (ASJC) codes
- Theoretical Computer Science
- Statistical and Nonlinear Physics
- Nuclear and High Energy Physics
- Mathematical Physics
- General Physics and Astronomy
- Computational Theory and Mathematics