Qubit-Programmable Operations on Quantum Light Fields.
Qubit-Programmable Operations on Quantum Light Fields.
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DOI：
10.1038/srep15125
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发表时间：
2015-10-15
影响因子：
4.6
通讯作者：
Tualle-Brouri R
中科院分区：
文献类型：
--
作者：
Barbieri M;Spagnolo N;Ferreyrol F;Blandino R;Smith BJ;Tualle-Brouri R
工程量子操作是开发量子技术和设计新的基础物理测试所需的关键能力。在这里，我们提出了一个方案，用于实现一个控制操作的旅行连续变量量子场，其功能是由一个离散的输入量子位。这为利用两种信息编码方法的优点开辟了新的途径。此外，这种方法允许程序本身处于操作的叠加中，因此它可以在量子处理器中使用，其中必须保持相干性。我们的研究不仅可以在一般的量子态工程和信息协议中找到兴趣，而且可以详细描述不同物理平台之间的接口。潜在的应用可以在将光学量子比特连接到光学系统中找到，对于这些光学系统，耦合最好用它们的连续变量来描述，例如光学机械设备。
Engineering quantum operations is a crucial capability needed for developing quantum technologies and designing new fundamental physics tests. Here we propose a scheme for realising a controlled operation acting on a travelling continuous-variable quantum field, whose functioning is determined by a discrete input qubit. This opens a new avenue for exploiting advantages of both information encoding approaches. Furthermore, this approach allows for the program itself to be in a superposition of operations, and as a result it can be used within a quantum processor, where coherences must be maintained. Our study can find interest not only in general quantum state engineering and information protocols, but also details an interface between different physical platforms. Potential applications can be found in linking optical qubits to optical systems for which coupling is best described in terms of their continuous variables, such as optomechanical devices.