0604103v3

related topics
{light, field, probe}
{state, states, coherent}
{state, phys, rev}
{bell, inequality, local}
{classical, space, random}
{photon, photons, single}
{entanglement, phys, rev}
{cos, sin, state}
{measurement, state, measurements}
{error, code, errors}
{cavity, atom, atoms}

A novel interferometer to beat the standard quantum limit using optical transverse modes in multimode waveguide

Jian Fu

abstract: 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 $\sqrt{N}$ 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.

oai_identifier:
oai:arXiv.org:quant-ph/0604103
categories:
quant-ph
comments:
9 pages, 3 figures,some errors corrected
arxiv_id:
quant-ph/0604103
created:
2006-04-14
updated:
2006-05-03

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