Polarization-transverse-spatial logical qubit entanglement purification using linear optics

• Published in: Optics and laser technology Vol. 185; p. 112566
• Main Authors: Guo, Peng-Liang, Gao, Cheng-Yan, Ren, Bao-Cang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.07.2025
• Subjects: Entanglement purification; Error correction; Linear optics; Logical qubit; Entanglement purification; Error correction; Logical qubit; Linear optics

We propose two types of logical qubit entanglement purification protocols (LEPPs) to reduce the effect of noises inside and outside the logical qubit subspace using linear optics, where logical qubit is encoded by single-photon polarization-transverse-spatial Bell state. For the noise outside of the...