AI 中文总结
针对两量子比特受控相位门，提出一种接近最优纠缠消耗的确定性LOCC门远程传输协议，解决了现有协议仅对Clifford门实现最优纠缠消耗的问题。
AI 中文摘要
门远程传输允许我们利用局域操作、经典通信（LOCC）及共享纠缠态实现非局域幺正操作。已知确定性远程传输协议至少消耗1个完整ebit，且仅对Clifford门实现最优纠缠消耗。本文提出一种用于实现两量子比特受控相位门$U_{\boldsymbol{\u03C6}}=\boldsymbol{\u0064iag}(1,1,1,e^{i\boldsymbol{\u03C6}})$（$\boldsymbol{\u03C6}\boldsymbol{\u2208}[0,\boldsymbol{\u03C0}]$）的确定性LOCC协议，其对任意$\boldsymbol{\u03C6}$的纠缠消耗均接近最优，尤其当旋转角趋近于0时，所需纠缠也趋近于0。
英文摘要
Gate teleportation allows us to implement a nonlocal unitary using local operations, classical communication (LOCC), and a shared entangled state. Known deterministic teleportation protocols consume at least one full ebit and achieve optimal entanglement consumption only for Clifford gates. Here, we present a deterministic LOCC protocol for implementing the two-qubit controlled-phase gate $U_ϕ=\mathrm{diag}(1,1,1,e^{i ϕ})$ with $ϕ\in [0,π]$ whose entanglement consumption is close to optimal for every $ϕ$. In particular, vanishing rotation angles require vanishing entanglement.
Comments19 pages, 5 figures
