Journal
ANNALEN DER PHYSIK
Volume 532, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.201900578
Keywords
controlled-phase-flip gates; nitrogen vacancy defect centers; parity gates; quantum computation
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Funding
- National Natural Science Foundation of China [11604012]
- Fundamental Research Funds for the Central Universities [FRF-TP-19-011A3, 230201506500024, FRF-BR-17-004B]
- China Scholarship Council
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Hyper-parallel quantum information processing is a promising and beneficial research field. Herein, a method to implement a hyper-parallel controlled-phase-flip (hyper-CPF) gate for frequency-, spatial-, and time-bin-encoded qubits by coupling flying photons to trapped nitrogen vacancy (NV) defect centers is presented. The scheme, which differs from their conventional parallel counterparts, is specifically advantageous in decreasing against the dissipate noise, increasing the quantum channel capacity, and reducing the quantum resource overhead. The gate qubits with frequency, spatial, and time-bin degrees of freedom (DOF) are immune to quantum decoherence in optical fibers, whereas the polarization photons are easily disturbed by the ambient noise.
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