Generation of Symmetric Dicke States of Remote Qubits with Linear Optics

2007/03/31 by C. Thiel, J. von Zanthier, Thierry Bastin +3 · 3 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum optics and atomic interactions #quant-ph

paper · pdf · doi:10.1103/physrevlett.99.193602

published as Phys. Rev. Lett. 99, 193602 (2007) · New version, a few modifications and a new figure, accepted in Physical Review Letters

arxiv created 2007/10/09 · openalex publication_date 2007/11/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a method for generating all symmetric Dicke states, either in the long-lived internal levels of N massive particles or in the polarization degrees of freedom of photonic qubits, using linear optical tools only. By means of a suitable multiphoton detection technique, erasing Welcher-Weg information, our proposed scheme allows the generation and measurement of an important class of entangled multiqubit states.

Citations

• Three qubits can be entangled in two inequivalent ways
• Creation of entangled states of distant atoms by interference
• Characterizing the entanglement of symmetric many-particle spin-12systems
• Experimental Observation of Four-Photon Entangled Dicke State with High Fidelity

Cited by

• Spin squeezing and entanglement
• Practical methods for witnessing genuine multi-qubit entanglement in the vicinity of symmetric states
• Entanglement of distant atoms by projective measurement: the role of detection efficiency