Work

Here are some works of mine 📚

Projects

Frustrated Superradiant Phase Transition

JC Zhao, Myung-Joong Hwang

Frustration is an interesting phenomenon in spin physics, where the system cannot minimize its energy due to conflicting constraints. We show that the order parameters during a superradiant phase transition can also be frustrated. This can lead to many exotic critical behaviors, such as the emergence of two diverging time scales.

[Physical Review Letters (opens new window)] [arXiv (opens new window)]

Anomalous multicritical phenomena and frustration induced by synthetic magnetic fields

JC Zhao, Myung-Joong Hwang

We identify an anomalous superradiant phase transition in the synthetic magnetic field. Due to the breaking of the time-reversal symmetry, the system can exhibit a series of first-order transitions when we tune the magnetic flux. Moreover, the system has novel behaviors in the normal phase, such as a bounded photon number, in contrast to the divergent photon number in other superradiant phase transitions.

[Physical Review Research (opens new window)] [arXiv (opens new window)]

Embedded inertial sensor for tracking projectile impact on granular media

Stefan Köstler, JC Zhao, Chen Lyu, Simeon Völkel and Kai Huang

Using inertial measurement units embedded in a projectile, we obtain the trajectory of the projectile impacting on a granular medium under microgravity. In addition to standard algorithms for trajectory reconstruction, we emphasize solutions to various sources of error to determine projectile trajectory accurately.

[EPJ Web Conf. (opens new window)]

The Trajectory of Quantum Computation in China

JC Zhao, Edessa Sahin, Hangyang Zhou, Yihuan Wang, Grigory Shutko

We investigate the current forum workstreams and future expansion plans of global quantum computing networks in Greater China by investigating the related stakeholders: public, private, and academic.

[WeChat Post (CN/EN) (opens new window)]