Quantum Zeno effects across a parity-time symmetry breaking transition in atomic momentum space
Quantum Zeno effects across a parity-time symmetry breaking transition in atomic momentum space
We experimentally study quantum Zeno effects in a parity-time (PT) symmetric cold atom gas periodically coupled to a reservoir. Based on the state-of-the-art control of inter-site couplings of atoms in a momentum lattice, we implement a synthetic two-level system with passive PT symmetry over two lattice sites, where an effective …