中国物理B ›› 2017, Vol. 26 ›› Issue (1): 10303-010303.doi: 10.1088/1674-1056/26/1/010303
Speeding up transmissions of unknown quantum information along Ising-type quantum channels
W J Guo(郭伟杰), L F Wei(韦联福)
- 1. Quantum Optoelectronics Laboratory, Southwest Jiaotong University, Chengdu 610031, China;
2. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China
Speeding up transmissions of unknown quantum information along Ising-type quantum channels
W J Guo(郭伟杰)1, L F Wei(韦联福)1,2
- 1. Quantum Optoelectronics Laboratory, Southwest Jiaotong University, Chengdu 610031, China;
2. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou 510275, China
摘要：
Quantum teleportation with entanglement channels and a series of two-qubit SWAP gates between the nearest-neighbor qubits are usually utilized to achieve the transfers of unknown quantum state from the sender to the distant receiver. In this paper, by simplifying the usual SWAP gates we propose an approach to speed up the transmissions of unknown quantum information, specifically including the single-qubit unknown state and two-qubit unknown entangled ones, by a series of entangling and disentangling operations between the remote qubits with distant interactions. The generic proposal is demonstrated specifically with experimentally-existing Ising-type quantum channels without transverse interaction; liquid NMR-molecules driven by global radio frequency electromagnetic pulses and capacitively-coupled Josephson circuits driven by local microwave pulses. The proposal should be particularly useful to set up the connections between the distant qubits in a chip of quantum computing.
中图分类号: (Entanglement measures, witnesses, and other characterizations)
- 03.67.Mn