%0 Generic %1 ma2014uncovering %A Ma, Wen-Long %A Wolfowicz, Gary %A Zhao, Nan %A Li, Shu-Shen %A Morton, John J. L. %A Liu, Ren-Bao %D 2014 %K interesting %T Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence %U http://arxiv.org/abs/1404.2717 %X Many-body correlations can yield key insights into the nature of interacting systems; however, detecting them is often very challenging in many-particle physics, especially in nanoscale systems. Here, taking a phosphorus donor electron spin in a natural-abundance 29Si nuclear spin bath as our model system, we discover both theoretically and experimentally that many-body correlations in nanoscale nuclear spin baths produce identifiable signatures in the decoherence of the central spin under multiple-pulse dynamical decoupling control. We find that when the number of decoupling -pulses is odd, central spin decoherence is primarily driven by second-order nuclear spin correlations (pairwise flip-flop processes). In contrast, when the number of -pulses is even, fourth-order nuclear spin correlations (diagonal interaction renormalized pairwise flip-flop processes) are principally responsible for the central spin decoherence. Many-body correlations of different orders can thus be selectively detected by central spin decoherence under different dynamical decoupling controls, providing a useful approach to probing many-body processes in nanoscale nuclear spin baths.

@misc{ma2014uncovering, abstract = {Many-body correlations can yield key insights into the nature of interacting systems; however, detecting them is often very challenging in many-particle physics, especially in nanoscale systems. Here, taking a phosphorus donor electron spin in a natural-abundance 29Si nuclear spin bath as our model system, we discover both theoretically and experimentally that many-body correlations in nanoscale nuclear spin baths produce identifiable signatures in the decoherence of the central spin under multiple-pulse dynamical decoupling control. We find that when the number of decoupling -pulses is odd, central spin decoherence is primarily driven by second-order nuclear spin correlations (pairwise flip-flop processes). In contrast, when the number of -pulses is even, fourth-order nuclear spin correlations (diagonal interaction renormalized pairwise flip-flop processes) are principally responsible for the central spin decoherence. Many-body correlations of different orders can thus be selectively detected by central spin decoherence under different dynamical decoupling controls, providing a useful approach to probing many-body processes in nanoscale nuclear spin baths.}, added-at = {2014-04-11T11:47:29.000+0200}, author = {Ma, Wen-Long and Wolfowicz, Gary and Zhao, Nan and Li, Shu-Shen and Morton, John J. L. and Liu, Ren-Bao}, biburl = {https://www.bibsonomy.org/bibtex/28794f99d2574ff27e5ff96620d1c3c4e/scavgf}, description = {Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence}, interhash = {eb30ccfebbcf6f353b8a5398b30b8844}, intrahash = {8794f99d2574ff27e5ff96620d1c3c4e}, keywords = {interesting}, note = {cite arxiv:1404.2717}, timestamp = {2014-04-11T11:47:29.000+0200}, title = {Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence}, url = {http://arxiv.org/abs/1404.2717}, year = 2014 }