Parallel interaction-free measurement using spatial adiabatic passage

TL;DR

This paper introduces a novel quantum imaging method using spatial adiabatic passage that enables interaction-free, parallel, and deterministic object detection without disturbing the objects, differing from traditional interference-based schemes.

Contribution

It presents a new interaction-free measurement technique leveraging spatial adiabatic passage, expanding quantum imaging capabilities with parallelism and symmetry-driven processes.

Findings

Enables interaction-free imaging of multiple objects simultaneously

Achieves deterministic measurement in the adiabatic limit

Proposes a collision-free quantum routing protocol

Abstract

Interaction-free measurement is a surprising consequence of quantum interference, where the presence of objects can be sensed without any disturbance of the object being measured. Here we show an extension of interaction-free measurement using techniques from spatial adiabatic passage, specifically multiple reciever adiabatic passage. Due to subtle properties of the adiabatic passage, it is possible image an object without interaction between the imaging photons and the sample. The technique can be used on multiple objects in parallel, and is entirely deterministic in the adiabatic limit. Unlike more conventional interaction-free measurement schemes, this adiabatic process is driven by the symmetry of the system, and not by more usual interference effects. As such it provides an interesting alternative quantum protocol which may be applicable to photonic implementations of spatial adiabatic passage. We also show that this scheme can be used to implement a collision-free quantum routing protocol.