title: Preserving coherence in Rydberg quantum bits.
abstract: The effectiveness of decoherence suppression schemes is explored using quantum bits (qubits) stored in Li np Rydberg states. Following laser excitation, pulsed electric fields coherently control the electronic spin-orbit coupling, facilitating qubit creation, manipulation, and measurement. Spin-orbit coupling creates an approximate decoherence-free subspace for extending qubit storage times. However, sequences of fast NOT operations are found to be substantially more effective for preserving coherence.
authors.affiliation: Department of Physics, University of Virginia, Charlottesville, Virginia 22904-4714, USA.
authors.forename: R S
authors.initials: RS
authors.lastname: Minns
authors.forename: M R
authors.initials: MR
authors.lastname: Kutteruf
authors.forename: H
authors.initials: H
authors.lastname: Zaidi
authors.forename: L
authors.initials: L
authors.lastname: Ko
authors.forename: R R
authors.initials: RR
authors.lastname: Jones