Generation of Atomic Cluster States through the Cavity Input-Output Process

2005/09/30 by Jaeyoon Cho, Hai-Woong Lee · 5 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum optics and atomic interactions #quant-ph

paper · pdf · doi:10.1103/physrevlett.95.160501

published as Phys. Rev. Lett. 95, 160501 (2005)

openalex publication_date 2005/10/11 · arxiv created 2005/10/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a scheme to implement a two-qubit controlled-phase gate for single atomic qubits, which works in principle with nearly ideal success probability and fidelity. Our scheme is based on the cavity input-output process and the single-photon polarization measurement. We show that, even with the practical imperfections such as atomic spontaneous emission, weak atom-cavity coupling, violation of the Lamb-Dicke condition, cavity photon loss, and detection inefficiency, the proposed gate is feasible for generation of a cluster state in that it meets the scalability criterion and it operates in a conclusive manner. We demonstrate a simple and efficient process to generate a cluster state with our high probabilistic entangling gate.

Citations

• Input and output in damped quantum systems: Quantum stochastic differential equations and the master equation
• Resource-Efficient Linear Optical Quantum Computation
• Measurement-based quantum computation with cluster states

Cited by

• Scalable cavity-QED-based scheme of generating entanglement of atoms and of cavity fields
• Heralded generation of entanglement with coupled cavities
• Cluster-type entangled coherent states
• Simple unconventional geometric scenario of one-way quantum computation with superconducting qubits inside a cavity
• Efficient one-step generation of large cluster states with solid-state circuits