High-precision hyperfine interaction characterization by adaptive quantum phase estimation
ORAL
Abstract
Nuclear spins in solid-state platforms is one of the promising physical systems for quantum computation and quantum simulation due to its extraordinary coherence time and natural existence. To implement the high-fideliy intricate spin control, it is imperative to acquire the complete information of the whole system Hamiltonian. We experimentally characterize the hyperfine interaction between the electron spin of NV center and its weakly coupled nuclear spins provided by the surrounding C-13. We take advantage of dynamical decoupling technique and the adaptive quantum phase estimation method to acquire the precise hyperfine parameter efficiently. We achieve high-fideliy (>90%) initialization for 6 nuclear spins. A hybrid system consisted of six nuclear spins and one electron spin, provides the possibility to complete the complicated task of quantum computation and quantum simulation.
*This work was supported by the Ministry of Education of China through its grant to Tsinghua University. LMD acknowledges in addition support from the AFOSR MURI and the ARL CDQI program.
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Presenters
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Panyu Hou
- Center for Quantum Information, IIIS, Tsinghua University
- Tsinghua Univ
- Institute for Interdisciplinary Information Sciences, Tsinghua University
- IIIS, Center for Quantum Information