Cloning scheme for multipartite entangled pure states via photonic quantum walk

Fig. 1. Schematic diagram of the QCM, which can generate two approximate clones of an unknown input bipartite quantum state on the two input qubits and two blank qubits, with the clones indicated by red dashed lines as Clone $1$ and Clone $2$ , or by gray dash-dot lines as Clone $1^{'}$ and Clone $2^{'}$

Download full size

View in Article

Fig. 2. The optical circuit for cloning bipartite entangled states. $H_{i} (i = 1, 2)$ denotes HWPs, with $H_{1} = \frac{1}{\sqrt[]{2}} [\begin{matrix} 1 & 1 \\ 1 & - 1 \end{matrix}]$ and $H_{2} = [\begin{matrix} 0 & 1 \\ 1 & 0 \end{matrix}]$ corresponding to their specific functions; BDi (i = 1, 2)and M are beam displacers and mirror, respectively; PR denotes phase retarder

Download full size

View in Article

Fig. 3. The optical circuit for cloning tripartite entangled states

Download full size

View in Article

Tools

Get Citation

Copy Citation Text

Guocui WANG, Zhi LIN, Xikun LI, Qing YANG, Ming YANG. Cloning scheme for multipartite entangled pure states via photonic quantum walk[J]. Chinese Journal of Quantum Electronics, 2025, 42(2): 206

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites

Paper Information

Category:

Received: May. 4, 2023

Accepted: --

Published Online: Apr. 1, 2025

The Author Email:

DOI:10.3969/j.issn.1007-5461.2025.02.006

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology