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Updated: Jul 25, 2026

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Published on: February 6, 2014
Preserving coherence in Rydberg quantum bits
R S Minns1, M R Kutteruf, H Zaidi
1Department of Physics, University of Virginia, Charlottesville, Virginia 22904-4714, USA.
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.
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