Decoherence-protected spin-photon quantum gates in a hybrid semiconductor-superconductor circuit
Li Wang, Tao Tu, Bo Gong, Guang-Can Guo
DOI 10.1103/PhysRevA.92.062346 · Physical Review A
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Abstract
High-fidelity gate operations are a crucial function for quantum information processing. This problem is particularly challenging for hybrid systems where coherence and control time scales greatly differ by orders of magnitude among different elements. Here we propose decoherence-protected gate operations in an important class of hybrid system in the context of a spin qubit in semiconductor quantum dots coupled to a superconductor resonator. Our scheme is able to generate complex photon states for various applications even in the presence of practical imperfections: limited available control of the spin-photon hybrid system and demanding spin decoherence in current state-of-the-art devices.
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