Quantum geometric phase under pre- And post-selection

T. S. Yakovleva, A. M. Rostom, V. A. Tomilin, L. V. Ilichev

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We consider a quantum system subjected to a controlled phase transformation and interaction with the environment in between the acts of selection, which leads to the emergence of interference effects. It is shown that the shift of the dependence of the statistics of contacts' information with the environement on the controlled phase shift can be interpreted as a geometric phase. This interpretation is consistent with the known operational approach to the geometric phase. As a result, we suggest generalising the operational approach to the realm of pre- and post-selected quantum states.

Original languageEnglish
Pages (from-to)439-442
Number of pages4
JournalQuantum Electronics
Volume49
Issue number5
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Mach - Zehnder interferometer
  • quantum geometric phase
  • two-state vector formalism
  • Mach-Zehnder interferometer

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