点击次数：

论文类型：期刊论文

发表时间：2018-09-01

发表刊物：QUANTUM INFORMATION PROCESSING

收录刊物：SCIE

卷号：17

期号：9

ISSN号：1570-0755

关键字：Circuit quantum electrodynamics; Large-scale QIP; Multi-target-qubit gate; Multi-resonator system

摘要：Circuit quantum electrodynamics system composed of many qubits and resonators may provide an excellent way to realize large-scale quantum information processing (QIP). Because of key role for large-scale QIP and quantum computation, multi-qubit gates have drawn intensive attention recently. Here, we present a one-step method to achieve a multi-target-qubit controlled phase gate in a multi-resonator system, which possesses a common control qubit and multiple different target qubits distributed in their respective resonators. Noteworthily, the implementation of this multi-qubit phase gate does not require classical pulses, and the gate operation time is independent of the number of qubits. Besides, the proposed scheme can in principle be adapted to a general type of qubits like natural atoms, quantum dots, and solid-state qubits (e.g., superconducting qubits and NV centers).