Stepped graphene-based Aharonov–Bohm interferometers

Tuning Locality of Pair Coherence in Graphene-based Andreev Interferometers

We report on gate-tuned locality of superconductivity-induced phase-coherent magnetoconductance oscillations in a graphene-based Andreev interferometer, consisting of a T-shaped graphene bar in contact with a superconducting Al loop. The conductance oscillations arose from the flux change through the superconducting Al loop, with gate-dependent Fraunhofer-type modulation of the envelope. We con...

Comparative Sensitivities of Gravitational Wave Detectors based on Atom Interferometers and Light Interferometers

iNe consider a class of proposed gravitational wave detectors based on multiple atomic interferometers separated by large baselines and referenced by common laser systems. We compute the sensitivity limits of these detectors due to intrinsic phase noise of the light sources, non-inertial motion of the light sources, and atomic shot noise and compare them to sensitivity limits for traditional li...

Atom Interferometers

Multi-Channel Adaptive Interferometers Based on Dynamic Hologram Multiplexing

Optical interferometry was always considered as one of the most flexible and sensitive techniques for measuring mechanical vibrations (Hariharan, 1990; Osterberg, 1932). The number of applications of this method tremendously increased after the discovery of lasers (in 1960) and the development of low-loss optical fibres (in 1966). A laser as a source of coherent radiation assures high sensitivi...

Direct Detection of Dark Matter with Space-based Laser Interferometers

Dark matter pervades the Solar System, free-streaming at the local Galactic orbital velocity of the halo with a space density of ∼ 9 × 10 gm cm. As these objects pass through the Solar system, they perturb gravitationally, and thus very weakly, all nearby inertial masses. Making use of this, we propose an approach to the direct detection of dark matter at previously inaccessible intermediate ma...