Santos Marcelo França
Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, 30161-970, MG, Brazil.
Phys Rev Lett. 2005 Jul 1;95(1):010504. doi: 10.1103/PhysRevLett.95.010504. Epub 2005 Jun 27.
We present a simple quantum circuit that allows for the universal and deterministic manipulation of the quantum state of confined harmonic oscillators. The scheme is based on the selective interactions of the referred oscillator with an auxiliary three-level system and a classical external driving source, and enables any unitary operations on Fock states, two by two. One circuit is equivalent to a single qubit unitary logical gate on Fock states qubits. Sequences of similar protocols allow for complete, deterministic, and state-independent manipulation of the harmonic oscillator quantum state.
我们展示了一个简单的量子电路，它能够对受限谐振子的量子态进行通用且确定性的操控。该方案基于所提及的谐振子与一个辅助三能级系统以及一个经典外部驱动源之间的选择性相互作用，并且能够对福克态两两进行任意酉操作。一个电路等同于福克态量子比特上的单个量子比特酉逻辑门。类似协议的序列能够对谐振子量子态进行完整、确定性且与状态无关的操控。
