NMR Quantum Automata in Doped Crystals
Abstract
In a lattice ${\cal L}$ of nuclear spins with ABCABCABC... type periodic structure embedded in a single-crystal solid, each ABC-unit can be used to store quantum information and the information can be moved around via some cellular shifting mechanism. Impurity doping marks a special site D$\not\in{\cal L}$ which together with the local spin lattice constitute a quantum automaton where the D site serves as the input/output port and universal quantum logic is done through two-body interactions between two spins at D and a nearby site. The novel NMR quantum computer can be easily scaled up and may work at low temperature to overcome the problem of exponential decay in signal-to-noise ratio in room temperature NMR.
- Publication:
-
arXiv e-prints
- Pub Date:
- May 1998
- DOI:
- 10.48550/arXiv.quant-ph/9805059
- arXiv:
- arXiv:quant-ph/9805059
- Bibcode:
- 1998quant.ph..5059W
- Keywords:
-
- Quantum Physics
- E-Print:
- Latex file, one eps figure