Multi-qubit quantum phase gates based on surface plasmons of a nanosphere

2014/01/06 by Jun Ren, Junfeng Ren, Jun Yuan +1
Computer Science · Engineering · Materials Science · Physics and Astronomy · #Gold and Silver Nanoparticles Synthesis and Applications #Phase qubit #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Quantum #Quantum Information and Cryptography #Quantum computer #Quantum gate #Quantum mechanics #Qubit #Superradiance #Surface plasmon #cond-mat.mes-hall #physics.optics #quant-ph

paper · pdf · doi:10.1364/josab.31.000229

published as J. Opt. Soc. Am. B 31, 229 (2014) · arXiv admin note: text overlap with arXiv:1002.1419 by other authors

openalex publication_date 2014/01/06 · arxiv created 2015/02/11 · arxiv updated 2015/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The Dicke subradiance and superradiance resulting from the interaction between surface plasmons of a nanosphere and an ensemble of quantum emitters have been investigated using a Green’s function approach. Based on such an investigation, we propose a scheme for a deterministic multi-qubit quantum phase gate. As an example, two-qubit, three-qubit, and four-qubit quantum phase gates have been designed and analyzed in detail. Phenomena due to the losses in the metal are discussed. Potential applications of these phenomena to quantum-information processing are anticipated.

Citations

• Quantum emitters coupled to surface plasmons of a nanowire: A Green’s function approach
• Demonstration of conditional gate operation using superconducting charge qubits
• Measurement of Conditional Phase Shifts for Quantum Logic
• n-qubit-controlled phase gate with superconducting quantum-interference devices coupled to a resonator
• Quantum Optics with Surface Plasmons