Purification of Quantum States through Zeno-like Measurements(Quantum Field Theories: Fundamental Problems and Applications)

和樹 越野

Carlo Presilla A, Roberto Onofrio, Ubaldo Tambini

Kazuya Yuasa, Hiromichi Nakazato, Makoto Unoki

We present a novel method for purifying quantum states, i.e. purification through Zeno-like measurements, and show an application to entanglement purification.

Filipe Barroso, Orfeu Bertolami A

Hiromichi Nakazato, Makoto Unoki, K. Yuasa

We present a novel method to purify quantum states, i.e. purification through Zeno-like measurements, and show an application to entanglement purification.

Kazuya Yuasa, Hiromichi Nakazato, Tomoko Takazawa

We present a novel procedure to purify quantum states, i.e., purification through Zeno-like measurements. By simply repeating one and the same measurement on a quantum system, one can purify another system in interaction with the former. The conditions for the (efficient) purification are specified on a rather general setting, and the framework of the method possesses wide applicability. It is explicitly demonstrated on a specific setup that the purification becomes very efficient by tuning relevant parameters.