Keeping a Quantum Bit Alive by Optimized π-Pulse Sequences
classification
🪐 quant-ph
cond-mat.mes-hallcond-mat.stat-mechcond-mat.str-el
keywords
optimizedpulsequantumsequencealiveanalyticalback-actioncarr-purcell-meiboom-gill
read the original abstract
A general strategy to maintain the coherence of a quantum bit is proposed. The analytical result is derived rigorously including all memory and back-action effects. It is based on an optimized $\pi$-pulse sequence for dynamic decoupling extending the Carr-Purcell-Meiboom-Gill (CPMG) cycle. The optimized sequence is very efficient, in particular for strong couplings to the environment.
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