Diamond-shaped quantum circuit for real-time quantum dynamics in one dimension

Miyakoshi, Shohei*; Sugimoto, Takanori*; Shirakawa, Tomonori*; Yunoki, Seiji*; Ueda, Hiroshi*

In recent years, quantum computing has evolved as an exciting frontier, with the development of numerous algorithms dedicated to constructing quantum circuits that adeptly represent quantum many-body states. However, this domain remains in its early stages and requires further refinement to better understand the effective construction of highly entangled quantum states within quantum circuits. Here, we demonstrate that quantum many-body states can be universally represented using a quantum circuit comprising multiqubit gates. Furthermore, we evaluate the efficiency of a quantum circuit constructed with two-qubit gates in quench dynamics for the transverse-field Ising model.