Enhancement of the Quantum Coherence of the Rydberg Atoms System by Weak Measurement
Qi Chen, Jing‐Bo Xu · Annalen der Physik · 2021
Abstract The influence of weak measurement along with quantum measurement reversal on the Rydberg atoms system is investigated, and is found to have an important practical significance as both weak measurement along with quantum measurement reversal and Rydberg atoms system can be experimentally realized. The quantum coherence and the entropic uncertainty relation of the system are explored, and it is found that the quantum coherence of the system is enhanced and the values of uncertainty and the uncertainty bound are reduced under some particular weak measurements along with quantum measurement reversals. This indicates that the decoherence effect of the system can be weakened by weak measurement along with quantum measurement reversal. Furthermore, the trace distance which is a reflection of the entanglement is also examined, and it is shown that weak measurement along with quantum measurement reversal can improve the entanglement of the system.