Preserving coherence in Rydberg quantum bits |
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Authors: | Minns R S Kutteruf M R Zaidi H Ko L Jones R R |
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Affiliation: | Department of Physics, University of Virginia, Charlottesville, Virginia 22904-4714, USA. |
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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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