Author

Tsung-Cheng Lu

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Preprint Sep 2026

Mixed-state phases induced by power-law quantum channels

Open quantum systems can exhibit inherently mixed quantum orders, such as strong-to-weak spontaneous symmetry breaking (SW-SSB), which have no analogue in pure states. It is generally expected that a finite-depth local quantum channel cannot induce a phase transition to SW-SSB in one spatial dimension. We circumvent th...

Christopher Fechisin, Tsung-Cheng Lu, Zhi-Yuan Wei et al. · 0 citations

Preprint Aug 2026

State preparation via measurement and feedback: pushing relations, state structures, and non-invertible symmetries

Quantum circuits with measurements and unitary feedback (MF) can prepare long-range entangled states in constant depth, but a systematic construction of the MF preparation circuit for a given target state remains underexplored. We develop such a scheme for one-dimensional states, based on the notion of pushable defects...

Yabo Li, Aditi Mitra, Tsung-Cheng Lu · 1 citation