Abstract
A controlled interference is proposed to reduce, by two orders of magnitude, the decoherence of a quantum gate for which the gate fidelity is limited by coupling to states other than the and qubit states. This phenomenon is demonstrated in an ultracold neutral atom implementation of a phase gate using qubits based on motional states in individual wells of an optical lattice.
- Received 16 July 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.077901
©2002 American Physical Society