Work

Simulating Zeno physics by a quantum quench with superconducting circuits

Year: 2014

Type: article

Abstract: Studying out-of-equilibrium physics in quantum systems under quantum quench is of vast experimental and theoretical interest. Using periodic quantum quenches, we present an experimentally accessible scheme to simulate the quantum Zeno and anti-Zeno effects in an $\mathit{open}$ quantum system of a single superconducting qubit interacting with an array of transmission line resonators. The scheme is based on the following two observations: First, compared with conventional systems, the short-time nonexponential decay in our superconducting circuit system is readily observed; and second, a quench-off process mimics an ideal projective measurement when its time duration is sufficiently long. Our results show the active role of quantum quench in quantum simulation and control.

Source: Physical Review A

DOI: 10.1103/physreva.89.060101

Authors: Qing-Jun Tong, Jun-Hong An, L. C. Kwek, Hong-Gang Luo, C. H. Oh

Institutions: Centre for Quantum Technologies, National University of Singapore, Lanzhou University, Beijing Computational Science Research Center

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: National Science Foundation

Awards: G1770421047, G4462794022, G8851865100