Fault-tolerant qubit encoding using a spin-7/2 qudit
The implementation of error correction protocols is a central challenge in the development of practical quantum information technologies. Recently, multi-level quantum resources such as harmonic oscillators and qudits have attracted interest in this context because they offer the possibility of addi...
| Main Authors: | , , |
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| Format: | Journal article |
| Jezik: | English |
| Izdano: |
American Physical Society
2023
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| Izvleček: | The implementation of error correction protocols is a central challenge in the development of
practical quantum information technologies. Recently, multi-level quantum resources such as harmonic oscillators and qudits have attracted interest in this context because they offer the possibility
of additional Hilbert space dimensions in a spatially compact way. Here we propose a quantum
memory, implemented on a spin-7/2 nucleus hyperfine-coupled to an electron spin-1/2 qubit, which
provides first order X, Y and Z error correction using significantly fewer quantum resources than
the equivalently effective qubit-based protocols. Our encoding may be efficiently implemented in
existing experimentally realised molecular electron-nuclear quantum spin systems. The strategy
can be extended to higher-order error protection on higher-spin nuclei. |
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