Efficient Coherent Control by Optimized Sequences of Pulses of Finite Duration TeX Export

@article{citeulike:4925743, abstract = {Reliable long-time storage of arbitrary quantum states is a key element for quantum information processing. In order to dynamically decouple a spin or quantum bit from a dephasing environment, we introduce an optimized sequence of \$N\$ control pulses of finite durations \$\tau\pp\$ and finite amplitudes. The properties of this sequence of length \$T\$ stem from a mathematically rigorous derivation. Corrections occur only in order \$T^{N+1}\$ and \$\tau\pp^3\$ without mixed terms such as \$T^N\tau\pp\$ or \$T^N\tau\pp^2\$. Based on existing experiments, a concrete setup for the verification of the properties of the advocated realistic sequence is proposed.}, archivePrefix = {arXiv}, author = {Uhrig, G\&\#xf6;tz S. and Pasini, Stefano}, citeulike-article-id = {4925743}, citeulike-linkout-0 = {http://arxiv.org/abs/0906.3605v1}, citeulike-linkout-1 = {http://arxiv.org/pdf/0906.3605v1}, eprint = {0906.3605v1}, keywords = {physics, printed, quantum}, month = {Jun}, posted-at = {2009-06-22 20:12:26}, priority = {3}, title = {Efficient Coherent Control by Optimized Sequences of Pulses of Finite Duration}, url = {http://arxiv.org/abs/0906.3605v1}, year = {2009} }

TY - JOUR ID - citeulike:4925743 L3 - citeulike-article-id:4925743 N2 - Reliable long-time storage of arbitrary quantum states is a key element for quantum information processing. In order to dynamically decouple a spin or quantum bit from a dephasing environment, we introduce an optimized sequence of $N$ control pulses of finite durations $\tau\pp$ and finite amplitudes. The properties of this sequence of length $T$ stem from a mathematically rigorous derivation. Corrections occur only in order $T^{N+1}$ and $\tau\pp^3$ without mixed terms such as $T^N\tau\pp$ or $T^N\tau\pp^2$. Based on existing experiments, a concrete setup for the verification of the properties of the advocated realistic sequence is proposed. TI - Efficient Coherent Control by Optimized Sequences of Pulses of Finite Duration KW - physics KW - printed KW - quantum AU - Uhrig, Götz AU - Pasini, Stefano PY - 2009/Jun/19/ UR - http://arxiv.org/abs/0906.3605v1 ER -