Interpreting a nested Mach-Zehnder interferometer with classical optics

The Optics of the Mach-Zehnder Interferometer

Which-way Information in a Nested Mach-Zehnder Interferometer

Recently Danan et al. [Phys. Rev. Lett. 111, 240402 (2013)] have performed a much discussed experiment in which which-way information was obtained from the light in a nested Mach-Zehnder interferometer by weak measurement. The presented analysis using the two state vector formalism drew the conclusions that the photons followed disconnected paths. We analyse this experiment using standard quant...

(Interpreting Deutsch’s algorithm on the Mach-Zehnder interferometer)

A Computação Quântica é uma área de pesquisa relativamente recente, que vem sendo desenvolvida nos últimos 20 anos, e que faz uso dos fundamentos da Ciência da Computação e da Fı́sica Quântica. Dois são os fenômenos quânticos em que se baseia a Computação Quântica: superposição e interferência. Neste trabalho, destacaremos o papel da interferência na solução do problema proposto por Deutsch, o q...

Mach–Zehnder–Fano interferometer

We introduce a concept of the Mach–Zehnder–Fano interferometer by inserting a cavity exhibiting Fano resonance into a conventional interferometer. By employing the scattering-matrix approach, we demonstrate that the transmission becomes sensitive to a position of the cavity such that an asymmetric structure exhibits a series of narrow resonances with almost perfect reflection. We discuss how to...

Highly stable polarization independent Mach-Zehnder interferometer.

We experimentally demonstrate optical Mach-Zehnder interferometer utilizing displaced Sagnac configuration to enhance its phase stability. The interferometer with footprint of 27×40 cm offers individually accessible paths and shows phase deviation less than 0.4° during a 250 s long measurement. The phase drift, evaluated by means of Allan deviation, stays below 3° or 7 nm for 1.5 h without any ...