Hiding in the mirror

Ralph E. Lapp, Robert R. Wilson

Qi-Zhang Yuan, Xun‐Li Feng

Recently, the nested Mach-Zehnder interferometer [Phys.Rev. Lett.111, 240402 (2013)] was modified by adding Dove prisms in a paper [Quantum Stud.: Math.Found.2, 255 (2015)], and an interesting result is that, after the Dove prisms were inserted, a signal at the first mirror of the nested interferometer was obtained.But, according to the former original paper, the photons have never been present near that mirror.In this work, we interpret this result naturally by resorting to the three-path interference method.Moreover, we find that even though the photons have been somewhere, they can hide the trace of being there.

Olimpiu G. Urcan

Vladan Panković, Milan Predojević, M. Krmar

Marshall et al. gedanken experiment of the quantum superpposition of a mirror (oscilating part of a Michelson interferometer) interacting with single photon is consequently interpreted by relative decoherence.Such relative decoherence (based on the spontaneous superposition breaking (effective hiding)) on the photon (quantum object) caused by mirror (measurement device) is sufficient to model real measurement.

Arthur Ashkin, John E. Bjorkholm, Steven Chu

P. Y. Wen, O. V. Ivakhnenko, M. A. Nakonechnyi +7 more

We investigate the Landau-Zener-St\"uckelberg-Majorana interferometry of a superconducting qubit in a semi-infinite transmission line terminated by a mirror. The transmon-type qubit is at the node of the resonant electromagnetic (EM) field, ``hiding'' from the EM field. We modulate the resonant frequency of the qubit by applying a sinusoidal flux pump. We perform spectroscopy by measuring the reflection coefficient of a weak probe in the system. Remarkable interference patterns emerge in the spectrum, which can be interpreted as multiphoton resonances in the dressed qubit. Our calculations agree well with the experiments.