Mach-Zehnder interferometer and the teleporter

Mach-Zehnder interferometer and the teleporter

We suggest a self-testing teleportation configuration for photon qubits based on a Mach-Zehnder interferometer. That is, Bob can tell how well the input state has been teleported without knowing what that input state was. One could imagine building a ‘‘locked’’ teleporter based on this configuration. The analysis is performed for continuous variable teleportation but the arrangement could be ap...

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...

The Optics of the Mach-Zehnder Interferometer

Bell’s inequality for the Mach-Zehnder interferometer

If a single photon impinges on a Mach-Zehnder interferometer, the probability of detecting the photon in a certain output channel depends on the difference between the phase delays imposed by the two interfering channels. The photon behaves as if it goes through both interfering channels. On the other hand, if detectors are inserted into each interfering channel, the photon is only detected in ...

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 ...