费米子真正多方纠缠
Fermionic Genuine Multiparty Entanglement
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中文总结 AI 辅助
研究费米子系统中真正多方纠缠，引入可有效计算的费米子真正多方负性测量，发现有该性质但无非费米子GME的态，揭示其与二分费米子负性的现象学差异。
中文摘要 AI 辅助
纠缠在费米子系统中表现出根本不同的行为。虽然费米子纠缠的二分测量已确立，但费米子系统中的真正多方纠缠（GME）了解较少。我们引入一种通过半定规划可有效计算的费米子GME测量——费米子真正多方负性（fGMN），表明它是纠缠单调量及费米子负性的自然多体扩展。利用此测量发现许多有fGMN但无非费米子GME的态，且fGMN与二分费米子负性有现象学差异，如分离和温度下的有限猝死点。
英文摘要
Entanglement can show fundamentally different behavior in fermionic systems. However, while bipartite measures of fermionic entanglement have been established, genuine multiparty entanglement (GME) in fermionic systems is much less understood. We introduce an efficiently computable measure (via semi-definite programming) of fermionic GME, fermion genuine multiparty negativity (fGMN), and show that it is an entanglement monotone and a natural multipartite extension of the fermionic negativity. Using this measure, we find many states which have fGMN but no non-fermionic GME, including large classes of fermionic stabilizer states. The fGMN also displays some major phenomenological differences to the bipartite fermionic negativity, such as finite sudden death points over separation and temperature.
发表机构
- Université de Montréal（蒙特利尔大学）
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