Mixed-State Quantum Phases: Renormalization and Quantum Error Correction

• Published in: Physical review. X Vol. 14; no. 3; p. 031044
• Main Authors: Sang, Shengqi, Zou, Yijian, Hsieh, Timothy H.
• Format: Journal Article
• Language: English
• Published: American Physical Society 01.09.2024

Open system quantum dynamics can generate a variety of long-range entangled mixed states, yet it has been unclear in what sense they constitute phases of matter. To establish that two mixed states are in the same phase, as defined by their two-way connectivity via local quantum channels, we use the...