Quantum Computing with Electron Spin Qubits

Date :From 2014-07-07 To 2014-07-25
Advisory committee :
Local coordinators :Kai Chang,Jiangfeng Du,Yuxi Liu,Yingdan Wang, Su Yi,Jianqiang You
International coordinators :Dimi Culcer,Xuedong Hu,Hongwen Jiang,Robert Joynt,Renbao Liu
Quantum computing has emerged as one of the central technological challenges of the 21st century: it promises much faster solutions for many complex problems. However, the actual construction of such computers remains challenging. It is necessary first of all to make a large collection of quantum bits (qubits) and couple them tightly together, all the while maintaining coherence in the entire array. Then one must be able to address the quantum bits, read them out, and ultimately interface these bits with a powerful conventional computer. The first part of the problem is being attacked in many ways: atomic states, nuclear spins, electron spins, and superconducting loops (to mention just a few) have all been used as candidate qubits. The second part of the problem, the integration of quantum bits into conventional electronic circuitry, is just starting to be attacked. The most promising approach involves spin qubits in semiconductor hosts, since semiconductors are the materials platform on which present-day computing technology stands.
The topics in spin qubits on which we hope to focus include
  • Electron and nuclear spin qubits in Si
  • Electron spin qubits and nuclear spin dynamics in GaAs
  • Electron spin qubits at NV-centers in diamond
  • Physics of Decoherence
  • Physics of spin control and coupling
  • Architecture design of a spin-based quantum computer
This Rapid Response Program will bring together researchers in theoretical and experimental physics to tackle outstanding questions in quantum information processing with spin qubits. Over the past decade researchers have obtained exciting and wide-ranging results in crucial areas of this subfield of the emerging field of quantum information science. Yet, many more obstacles have to be overcome, both theoretical and experimental, before we can realize the potential of processing information in a quantum mechanical manner with spin qubits. Meanwhile, many powerful techniques and ideas have been developed over the past decade, but have yet to be widely assimilated. The program will provide many opportunities to become familiar with these results and to foster collaboration to resolve some of the outstanding problems.  In addition, this Program will focus on theoretical issues that are very closely tied to experiment: this has been the tradition in the field. Thus we will make sure that the Program is less devoted to abstract concerns and instead focuses on topics that are directly relevant to experiment.Experimentalists are strongly encouraged to apply.

Link to the kickoff workshop: http://www.csrc.ac.cn/conference/QOQI2014/