Generating Bell states and N-partite W states of long-distance qubits in superconducting waveguide QED
Guo-Qiang Zhang, Wei Feng, Wei Xiong, Da Xu, Qi-Ping Su, Chui-Ping Yang
DOI 10.1103/PhysRevApplied.20.044014 · Physical Review Applied
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We show how to generate Bell states and N-partite W states of long-distance superconducting (SC) qubits in a SC waveguide QED system, where SC qubits are coupled to an open microwave transmission line. In the two-qubit case, the Bell state of two long-distance qubits can be a dark state of the system by choosing appropriate system parameters. If one proper microwave pulse drives one of two qubits, the two qubits will evolve from their ground states to a Bell state. Further, we extend this scheme to the multiqubit case. We show that W states of N long-distance qubits can also be generated. Because both the Bell and W states are decoupled from the waveguide (i.e., dark states of the system), they are steady and have very long lifetimes in the ideal case without decoherence of qubits. In contrast to the ideal case, the presence of decoherence of qubits limits the lifetimes of the Bell and W states. Our study provides an alternative scheme for generating Bell states and N-partite W states in SC waveguide QED, which can be used to entangle long-distance nodes in waveguide quantum networks.
Similar papers
Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit
similarity 0.90C. Eichler et al.
Source status unknown — claims are unverified
Dynamics and multiqubit entanglement in distant resonators
similarity 0.90Muhammad Waseem et al. · 2020 · arXiv:2004.12008
Source status unknown — claims are unverified
Photonic Bell-state analysis based on semiconductor-superconductor structures
similarity 0.89Evyatar Sabag et al.
Source status unknown — claims are unverified
Using sideband transitions for two-qubit operations in superconducting circuits
similarity 0.89P. J. Leek et al.
Source status unknown — claims are unverified
Entangled microwaves as a resource for entangling spatially separate solid-state qubits: Superconducting qubits, nitrogen-vacancy centers, and magnetic molecules
similarity 0.88Angela Viviana Gómez et al.
Source status unknown — claims are unverified
Manipulating Complex Hybrid Entanglement and Testing Multipartite Bell Inequalities in a Superconducting Circuit
similarity 0.88Y. Ma et al.
Source status unknown — claims are unverified