Quantum logic with weakly coupled qubits
Quantum logic with weakly coupled qubits
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DOI：
10.1103/physreva.81.012320
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发表时间：
2009-03
影响因子：
2.9
通讯作者：
M. Geller;E. Pritchett;Andrei Galiautdinov;J. Martinis
中科院分区：
文献类型：
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作者：
M. Geller;E. Pritchett;Andrei Galiautdinov;J. Martinis
有一些众所周知的协议用于执行受控非（CNOT）量子逻辑，其中量子比特通过特定的高对称性（伊辛或海森堡）相互作用耦合。然而，许多正在考虑用于量子计算的体系结构涉及量子比特或量子比特和谐振器，它们通过更复杂和更不对称的相互作用耦合。在这里，我们考虑了一个广泛适用的弱但任意耦合的两能级系统模型，并使用量子门设计技术推导了一个简单直观的CNOT结构。对于常见的特殊情况，给出了解决方案的有用变体和扩展。
There are well-known protocols for performing controlled NOT (CNOT) quantum logic with qubits coupled by particular high-symmetry (Ising or Heisenberg) interactions. However, many architectures being considered for quantum computation involve qubits or qubits and resonators coupled by more complicated and less symmetric interactions. Here we consider a widely applicable model of weakly but otherwise arbitrarily coupled two-level systems, and use quantum gate design techniques to derive a simple and intuitive CNOT construction. Useful variations and extensions of the solution are given for common special cases.