Diagnosing Quantum Phases Using Long-Range Two-Site Quantum Resource
Behaviors
- URL: http://arxiv.org/abs/2311.04514v1
- Date: Wed, 8 Nov 2023 08:00:32 GMT
- Title: Diagnosing Quantum Phases Using Long-Range Two-Site Quantum Resource
Behaviors
- Authors: Lin-Lin Su, Jun Ren, Wen-Long Ma, Z. D. Wang, and Yan-Kui Bai
- Abstract summary: We show that the behaviors of long-range, two-site quantum resources can effectively diagnose quantum phases.
In particular, we discover the quantum resource freezing phenomenon, where topologically protected long-range quantum resources may have potential applications in quantum information processing.
- Score: 0.16777183511743465
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We propose and demonstrate that the behaviors of long-range, two-site quantum
resources can effectively diagnose quantum phases. In an XX spin chain with
symmetry-breaking quantum phase transitions, we reveal that the asymptotic and
oscillating decay modes of quantum coherence or quantum discord, along with
two-site distance, can identify two spin-liquid phases. Furthermore, based on
our analytical results of spin correlation functions, we confirm the existence
of long-range entanglement in the system and establish a connection between
two-site entanglement and quantum phases. Additionally, for the extended Ising
model with topological phase transitions, we find that coherence and quantum
discord behaviors can also signify topological quantum phases. In particular,
we discover the quantum resource freezing phenomenon, where topologically
protected long-range quantum resources may have potential applications in
quantum information processing.
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