Weak measurement combined with quantum delayed-choice experiment and implementation in optomechanical system

TL;DR

This paper explores the amplification effects in weak measurements combined with quantum delayed-choice experiments, highlighting the role of wave-particle duality and entanglement, and proposes an implementation scheme in optomechanical systems.

Contribution

It introduces a novel scheme for implementing weak measurement in optomechanical systems using quantum delayed-choice experiments and explains the underlying amplification mechanism.

Findings

Counterintuitive negative amplification effect observed

Amplification caused by wave-particle duality and entanglement

Proposed implementation scheme in optomechanical systems

Abstract

Weak measurement [1,19] combined with quantum delayed-choice experiment that use quantum beam splitter instead of the beam splitter give rise to a surprising amplification effect, i.e., counterintuitive negative amplification effect. We show that this effect is caused by the wave and particle behaviours of the system to be and can't be explained by a semiclassical wave theory, due to the entanglement of the system and the ancilla in quantum beam splitter. The amplification mechanism about wave-particle duality in quantum mechanics lead us to a scheme for implementation of weak measurement in optomechanical system.