70 citations · 158 across the 8 of their papers we have counts for
8 papers
Temporal Interference from Topological Transitions in Monitored Quantum Dynamics
Qingyuan Wang, Ruoyu Yin, Eli Barkai
Quantum interference is conventionally associated with the coherent superposition of alternative paths. We uncover a temporal form of interference in repeatedly monitored quantum s…
Emergence of drifted diffusion in quantum walks with subspace restart
Liwei Qiao, Ruoyu Yin, Wei Zhang
Restart of a quantum process is typically modeled as a global reinitialization that erases the system's entire history. Here we introduce subspace restart, a protocol that periodic…
First Hitting Times on a Quantum Computer: Tracking vs. Local Monitoring, Topological Effects, and Dark States
Qingyuan Wang, Silin Ren, Ruoyu Yin +3
We investigate a quantum walk on a ring represented by a directed triangle graph with complex edge weights and monitored at a constant rate until the quantum walker is detected. To…
Restart uncertainty relation for monitored quantum dynamics
Ruoyu Yin, Qingyuan Wang, Sabine Tornow +1
We introduce a novel time-energy uncertainty relation within the context of restarts in monitored quantum dynamics. Initially, we investigate the concept of ``first hitting time''…
Constructing Berry-Maxwell equations with Lorentz invariance and Gauss' law of Weyl monopoles in 4D energy-momentum space
Yiming Pan, Ruoyu Yin
We present the construction of a reciprocal electromagnetic field by extending the Berry curvatures into four-dimensional (4D) energy-momentum space. The resulting governing equati…
Instability in the quantum restart problem
Ruoyu Yin, Qingyuan Wang, Eli Barkai
Repeatedly-monitored quantum walks with a rate yield discrete-time trajectories which are inherently random. With these paths the first-hitting time with sharp restart is stu…
Restart expedites quantum walk hitting times
Ruoyu Yin, Eli Barkai
Classical first-passage times under restart are used in a wide variety of models, yet the quantum version of the problem still misses key concepts. We study the quantum hitting tim…
Large fluctuations of the first detected quantum return time
Ruoyu Yin, Klaus Ziegler, Felix Thiel +1
How long does it take a quantum particle to return to its origin? As shown previously under repeated projective measurements aimed to detect the return, the closed cycle yields a g…