Towards quantum error correction with two-body gates for quantum registers based on nitrogen-vacancy centers in diamond

Abstract

Color centers in diamond provide a possible hardware for quantum computation, where the most basic quantum information processing unit are nitrogen-vacancy (NV) centers, each in contact with adjacent carbon nuclear spins. With specifically tailored dynamical decoupling sequences, it is possible to execute selective, high-fidelity two-body gates between the electron spin of the NV center and a targeted nuclear spin. In this work, we present a method to determine the optimal execution time that balances the trade-off between fidelity and execution speed for gates generated by adaptive XY sequences. With these optimized gates, we use the nuclear spin environment as a code space for quantum error correction within a color center register.

(V2) minor corrections/typos

References in corpus (5)

• Extending Quantum Coherence in Diamond
• Robust dynamical decoupling for quantum computing and quantum memory
• Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing spin-bath
• Temperature dependence of the ${}^{13}$C hyperfine structure of the negatively-charged nitrogen-vacancy center in diamond
• High-Fidelity Entangling Gates for Electron and Nuclear Spin Qubits in Diamond