Multipartite entangled states in coupled quantum dots and cavity QED

2002/12/06 by Xiaoguang Wang, Mang Feng, Barry C. Sanders +1 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physreva.67.022302

published as Phys. Rev. A 67, 022302 (2003). · 9 pages, 4 figures, to appear in Phys. Rev. A

arxiv created 2002/12/06 · openalex publication_date 2003/02/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We investigate the generation of multipartite entangled state in a system of N quantum dots embedded in a microcavity and examine the emergence of genuine multipartite entanglement by three different characterizations of entanglement. At certain times of dynamical evolution one can generate multipartite entangled coherent exciton states or multiqubit W states by initially preparing the cavity field in a superposition of coherent states or the Fock state with one photon, respectively. Finally, we study environmental effects on multipartite entanglement generation and find that the decay rate for the entanglement is proportional to the number of excitons.

Citations

• Three qubits can be entangled in two inequivalent ways
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Distributed Entanglement

Cited by

• Perfect transfer of coherent state-based qubits via coupled cavities
• Preparation of cluster states andWstates with superconducting quantum-interference-device qubits in cavity QED
• Scalable method to estimate experimentally the entanglement of multipartite systems