Direct implementation of a scalable non-local multi-qubit controlled phase gate via optical fibres and adiabatic passage

Abstract

This paper presents a direct implementation scheme of the non-local multi-qubit controlled phase gate by using optical fibres and adiabatic passage. The smaller operation number for implementing the multi-qubit controlled phase gate and needlessness for addressing individually save physical resource and lower the difficulties of experiment. Meanwhile, the scheme is immune from some decoherence effects such as the atomic spontaneous emission and fibre loss. In principle, it is scalable.

The All-Optical Fiber Perimeter Alarm System

“…Optical waveform after squeeze, touching and other vibration disturbance Touching, vibration or squeeze lead to form interference and produce light signal phase changes. Software receivers for phase change detection can detect the intensity and type of interference, and process detected signals to determine whether the interference triggers "event" conditions or not [5] .…”