Hamiltonian Determination with Restricted Access in Transverse Field Ising Chain
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概要
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We propose a method to evaluate parameters in the Hamiltonian of the Ising chain under site-dependent transverse fields, with a proviso that we can control and measure one of the edge spins only. We evaluate the eigenvalues of the Hamiltonian and the time-evoultion operator exactly for a three-spin chain, from which we obtain the expectation values of \sigma_{x} of the first spin. The parameters are found from the peak positions of the Fourier transform of the expectation value. There are four assumptions in our method, which are mild enough to be satisfied in many physical systems.
- 2011-04-15
著者
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Tanaka Shu
Research Center For Quantum Computing Interdisciplinary Graduate School Of Science And Engineering K
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Fasihi Mohammad
Research Center For Quantum Computing Kinki University:department Of Physics Azarbijan University Of
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Nakahara Mikio
Research Center for Quantum Computing, Interdisciplinary Graduate School of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan
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Fasihi Mohammad
Research Center for Quantum Computing, Interdisciplinary Graduate School of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan
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Kondo Yasushi
Research Center for Quantum Computing, Interdisciplinary Graduate School of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan
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Tanaka Shu
Research Center for Quantum Computing, Interdisciplinary Graduate School of Science and Engineering, Kinki University, Higashiosaka, Osaka 577-8502, Japan
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