2006/04/14 by Jian Fu, Fu, Jian
Computer Science · Engineering · Physics and Astronomy · #Mechanical and Optical Resonators #Photonic and Optical Devices #Quantum Information and Cryptography #quant-ph
paper · pdf · doi:10.48550/arxiv.quant-ph/0604103
9 pages, 3 figures,some errors corrected
arxiv created 2006/05/03 · arxiv updated 2009/12/01
We propose a novel interferometer by using optical transverse modes in multimode waveguide that can beat the standard quantum limit. In the scheme, the classical simulation of N-partical quantum entangled states is generated by using N independent classical fields and linear optical elements. Similar to the quantum-enhanced measurements, the classical simulation can also achieve √(N) enhancement over the precision of the measurement N times for independent fields. Due to only using classical fields and linear optical elements, the scheme can be realized much more easily.