Implementing a Two‐Photon Three‐Degrees‐of‐Freedom Hyper‐Parallel Controlled Phase Flip Gate Through Cavity‐Assisted Interactions

2020/03/01 by Hai-Rui Wei, Hai‐Rui Wei, Wen-Qiang Liu +3
Computer Science · Physics and Astronomy · #Coupling (piping) #Mechanical and Optical Resonators #Photon #Quantum #Quantum Information and Cryptography #Quantum decoherence #Quantum gate #Quantum information #Quantum information processing #Quantum optics and atomic interactions #Qubit #quant-ph

paper · pdf · doi:10.1002/andp.201900578

published as Annalen der Physik (Berlin), 1900578 (2020) · 11 pages, 3 figures

openalex publication_date 2020/03/01 · openalex created_date 2020/03/13 · arxiv created 2020/04/06 · arxiv updated 2020/04/07 · openalex updated_date 2026/08/05

Abstract

Abstract 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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