期刊
PHYSICAL REVIEW A
卷 85, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.043604
关键词
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资金
- NBRPC [2012CB821305, 2012CB922102]
- NNSFC [10974225, 11075223, 11004226]
- NCETPC [NCET-10-0850]
- Fundamental Research Funds for Central Universities of China
We explore the possibility of implementing a Heisenberg-limited Mach-Zehnder interferometer via an array of trapped ions, which obey a quantum Ising model within a transverse field. Based upon adiabatic processes of increasing the Ising interaction and then decreasing the transverse field, we demonstrate a perfect transition from paramagnetism to ferromagnetic states, which can be used as the beam splitter for the multi-ion Mach-Zehnder interferometer. The achieved NOON state of the ions enables the Heisenberg-limited interferometer. Using currently available techniques for ultracold ions, we discuss the experimental feasibility of our scheme with global operations.
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