Quantum simulation of non-Hermitian systems is non-trivial, as the use of Trotterization would incur into a huge sampling overhead. Here, the authors use a variational approach to simulate a quench in a 18-site fermionic chain on a trapped-ion quantum processor, seeing the signature of a supersonic mode in the connected density-density correlation function and providing insights on when quantum computers fail to simulate non-Hermitian dynamics.
- Yuxuan Zhang
- Juan Carrasquilla
- Yong Baek Kim