Versatile, dynamically balanced low-noise optical-field manipulator using a coherently prepared atomic medium

Abstract

We propose a versatile dynamic optical field manipulator using coherently prepared atomic medium. We show that by locking the pump power change with the two-photon detuning a π phase shifting can be realized with unit probe fidelity in a broad two-photon detuning range. The two-photon-insensitive π phase-shift mode with significantly reduced fluctuation makes this scheme an attractive system for low-noise phase gate operations.