Universal quantum logic gates in a scalable Ising spin quantum computer

Abstract

We consider the model of quantum computer, which is represented as a Ising spin lattice, where qubits (spin-half systems) are separated by the isolators (two spinhalf systems). In the idle mode or at the single bit operations the total spin of isolators is 0. There are no need of complicated protocols for correcting the phase and probability errors due to permanent interaction between the qubits. We present protocols for implementation of universal quantum gates with the rectangular radiofrequency pulses.

Experimental perfect state transfer of an entangled photonic qubit

“…In the intermediate stages, the qubit is in a superposition across the lattice. Aside from qubit relocation, the PST framework can be applied to entangled W-state preparation 23 , state amplification 24 and even quantum computation 25 26 27 28 29 .…”