5 papers
Universal and Maximal Entanglement Swapping in General Fermionic Gaussian States
Jiyuan Fang, Qicheng Tang, Xueda Wen
Exploring universal entanglement structure in many-body systems is both fundamental and challenging, particularly when the system undergoes non-unitary operations. In this work, we…
Dissipation meets conformal interface in open quantum systems: How the relaxation rate is suppressed
Ruhanshi Barad, Qicheng Tang, Xueda Wen
Conformal interfaces play an important role in quantum critical systems. In closed systems, the transmission properties of conformal interfaces are typically characterized by two q…
Probing prethermal nonergodicity through measurement outcomes of monitored quantum dynamics
Zheng-Hang Sun, Fabian Ballar Trigueros, Qicheng Tang +1
Projective measurements are a key element in quantum physics and enable rich phenomena in monitored quantum dynamics. Here, we show that the measurement outcomes, recorded during m…
Universal time evolution of string order parameter in quantum critical systems with boundary invertible or non-invertible symmetry breaking
Ruhanshi Barad, Qicheng Tang, Wei Zhu +1
The global symmetry, either invertible or non-invertible, has been extensively studied in two dimensional conformal field theories in recent years. When the theory is defined on a…
A critical state under weak measurement is not critical
Qicheng Tang, Xueda Wen
Critical systems host nontrivial entanglement structure that is generally sensitive to additional couplings. In the present work, we study the effect of weak measurements on the en…