Using time reversal symmetry for sensitive incoherent matter-wave Sagnac interferometry

Abstract

We present a theory of the transmission of incoherent guided matter-waves through Sagnac interferometers. Interferometer configurations with only one input and one output port have a property similar to the phase rigidity observed in the transmission through Aharonov-Bohm interferometers in coherent mesoscopic electronics. This property is connected to the existence of counterpropagating paths of equal length and enables the operation of such matter-wave interferometers with incoherent sources. High finesse interferometers of this kind have a rotation sensitivity inversely proportional to the square root of the finesse.

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• Perspective on new implementations of atomtronic circuits
• Transport of ultracold atoms between concentric traps via spatial adiabatic passage
• Magnetically guided Cesium interferometer for inertial sensing
• Phase space tomography of cold-atoms dynamics in a weakly corrugated potential
• Coherent injecting, extracting, and velocity filtering of neutral atoms in a ring trap via spatial adiabatic passage
• Sagnac interference in Carbon nanotubes
• Suppression and enhancement of decoherence in an atomic Josephson junction
• Robust spatial coherence 5$\mu$m from a room-temperature atom chip
• Controlling the dynamical scale factor in a trapped atom Sagnac Interferometer
• Long spatial coherence times a few micro-meters from a room temperature surface