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Probabilistically implementing nonlocal operations between two distant qutrits
Authors:Shan Yong-Guang  Nie Jian-Jun and Zeng Hao-Sheng
Institution:Department of Physics, Hunan Normal University, Changsha 410081, China
Abstract:We propose a method to probabilistically implement a nonlocal operation, $% \exp {}\i\xi U_{A}U_{B}{]}$, between two distant qutrits $A$ and $B$, where $% \xi \in 0,2\pi ]$ and $U_{A}$, $U_{B}$ are local unitary and Hermitian operations for qutrits $A$ and $B$ respectively. The consumptions of resource for one performance of the method are a single non-maximally entangled qutrit state and 1-trit classical communication. For a given $\xi $% , the successful probability of the method depends on the forms of both entanglement resource and Bob's partial-measurement basis. We systematically discuss the optimal successful probabilities and their corresponding conditions for three cases: adjustable entanglement resource, adjustable partial-measurement basis, adjustable entanglement resource and partial-measurement basis. It is straightforward to generalize the method for producing nonlocal unitary operations between any two $N$-level systems.
Keywords:nonlocal operation  qutrit  optimal successful probability
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