Electron Sagnac gyroscope in an array of mesoscopic quantum rings

John R.E. Toland, Chris P. Search

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The Sagnac effect is an important phase coherent effect in optical and atom interferometers where rotations with respect to an inertial frame are measured in the interference pattern. We analyze the Sagnac effect in a serial array of mesoscopic ring shaped electron interferometers comprised of rings with half-circumferences comparable to the mean free path. The entire array is, however, much larger than the phase coherence length. Phase coherent transport at the level of individual rings leads to a measurable Sagnac effect in the conductance of the chain. We use the signal to noise ratio (SNR) to determine the number of rings needed to measure a desired rotation rate.

Original languageEnglish
Pages (from-to)923-928
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume374
Issue number7
DOIs
StatePublished - 1 Feb 2010

Keywords

  • Ballistic transport
  • Gyroscope
  • Matter wave interferometry
  • Sagnac effect

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