2015/09/02 by Gang Li, Tao Wang, Ming-Yong Ye +2 · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Controlled NOT gate #Hadamard transform #Interference (communication) #Mechanical and Optical Resonators #Postselection #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum gate #Qubit #Semiclassical physics #Weak measurement #cond-mat.quant-gas #cs.IT #math.IT #quant-ph
paper · pdf · doi:10.1140/epjd/e2015-60342-x
arxiv created 2015/09/02 · openalex publication_date 2015/12/01 · arxiv updated 2016/01/20 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.