期刊
PHYSICAL REVIEW A
卷 79, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.020305
关键词
inverse problems; many-body problems; quantum computing
资金
- NSF [EIA-0130383]
- NSA
- LPS
- ARO,
Quantum control requires full knowledge of the system many-body Hamiltonian. In many cases this information is not directly available due to restricted access to the system. Here we show how to indirectly estimate all the coupling strengths in a spin chain by measuring one spin at the end of the chain. We also discuss the efficiency of this quantum inverse problem and give a numerical example.
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