Complete and fidelity-robust hyperentangled-state analysis of photon systems with single-sided quantum-dot-cavity systems under the balance condition

YH Sun, YQ Guo, C Cao - Quantum Information Processing, 2023 - Springer
Hyperentangled Bell-state analysis (HBSA) for two-photon systems and hyperentangled
Greenberger–Horne–Zeilinger-state analysis (HGSA) for multi-photon systems play …

Complete Hyperentangled Bell States Analysis For Polarization‐Spatial‐Time‐Bin Degrees of Freedom with Unity Fidelity

XJ Zhou, WQ Liu, YB Zheng, HR Wei… - Annalen der …, 2022 - Wiley Online Library
Hyperentangled states can outperform their classical counterparts on solving certain tasks.
Here, a simplified scheme for completely distinguishing two‐photon hyperentangled Bell …

High-fidelity n-qubit quantum controlled-not gates on quantum-dot spins

XM Xiu, SG Chen, ZL Zhao, ZQ Yuan, XY Zhang… - Optics …, 2024 - opg.optica.org
Realizing high-fidelity n-qubit quantum controlled-not gates is of critical significance.
Applying quantum-dot (QD) spins as qubits, an (n− 1)-qubit control 1-qubit not gate and a 1 …

High-fidelity single logical qubit encoding scheme assisted by single-sided quantum dot-cavity systems

XM Xiu, XY Wang, ST Liu, L Lv, ZL Zhao, ZQ Yuan… - Optics Letters, 2024 - opg.optica.org
We present an encoding scheme of a single logical qubit with single-sided quantum dot
(QD)-cavity systems, which is immune to the collective decoherence. By adjusting the …

Simple realization of a hybrid controlled–controlled-Z gate with photonic control qubits encoded via eigenstates of the photon-number parity operator

QP Su, L Bin, Y Zhang, CP Yang - Applied Physics Letters, 2023 - pubs.aip.org
We propose a simple method to realize a hybrid controlled–controlled-Z (CCZ) gate with two
photonic qubits simultaneously controlling a superconducting (SC) target qubit, by …

Lyapunov control of finite-dimensional quantum systems based on bi-objective quantum-behaved particle swarm optimization algorithm

S Liu, S Zhou, X Lu, F Gao, F Shuang… - Journal of the Franklin …, 2023 - Elsevier
This paper presents a Lyapunov control scheme to drive finite-dimensional closed and
Markovian open quantum systems into any target pure state with as high fidelity and as little …

Scalable Quantum Controlled Gates on Single-Photon Polarization Qubits Assisted by Nitrogen-Vacancy Centers Inside Single-Sided Optical Cavities

RY Jiang, JW Xin, C Cao - International Journal of Theoretical Physics, 2021 - Springer
Quantum logic gates are the foundation of circuit-based quantum computation and quantum
simulation. Multi-qubit quantum controlled gates are of vital importance when large-scale …