Mixed-State Long-Range Order and Criticality from Measurement and Feedback
Tsung-Cheng Lu, Zhehao Zhang, Sagar Vijay, Timothy H. Hsieh · PRX Quantum · 2023
Utilizing midcircuit measurement and unitary feedback, a general framework is proposed to realize mixed states with a variety of quantum orders, criticality, and long-range entanglement in finite time.