Quantum Interface between a Superconducting Qubit and Spin Ensembles |
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| Authors: | Feng‐Yang Zhang Wen‐Lin Li Wei‐Bin Yan Chui‐Ping Yang |
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| Institution: | 1. School of Physics and Materials Engineering, Dalian Nationalities University, Dalian, 116600 China;2. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116024 China;3. College of Physics and Engineering, Qufu Normal University, Qufu, 273165 ChinaE‐mail:;4. E‐mail:;5. Quantum Information Research Center, Shangrao Normal University, Shangrao, 334001 China;6. Department of Physics, Hangzhou Normal University, Hangzhou, Zhejiang, 310036 ChinaE‐mail: |
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| Abstract: | An experimentally feasible strong coupling system between a spin ensemble and a superconducting qubit is studied. The coupling strength can be exponentially enhanced by applying the squeezing transformations to the system. By means of the two spin ensembles commonly coupled to a superconducting qubit, a set of universal nonadiabatic holonomic single‐qubit quantum gates can be realized in a decoherence‐free subspace. Furthermore, this proposal is robust with respect to decay of the system parameters, and it is experimentally feasible with currently available technology. |
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| Keywords: | NV ensemble Quantum logic gates Quanum information Superconducting qubit |
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