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1 results

  • 3 - Elements of Quantum Mechanics II: Open Systems

  • from Part I - Preliminaries
  • Gilad Gour, Technion - Israel Institute of Technology, Haifa
  • Book:
    Quantum Resource Theories
    Published online:
    03 May 2025
    Print publication:
    10 April 2025, pp 75-132

  • Summary

    Chapter 3 explores open quantum systems, emphasizing their interactions with environments, unlike isolated closed systems. It introduces the concept of generalized measurements and mixed quantum states, reflecting the complex scenarios arising from these interactions. The chapter utilizes Positive Operator Valued Measures (POVMs) to describe generalized measurements, broadening the conventional approach to quantum measurements.

    A significant focus is on the evolution of open systems through quantum channels, which illustrate the transfer or transformation of quantum information amid noise and external disturbances. This section underpins the dynamics open systems exhibit, critical for understanding quantum computing and information processing in realistic settings.

    Through practical examples, the chapter elucidates how environmental factors influence quantum information, vital for applications in quantum technologies. It aims to equip readers with foundational knowledge of open quantum systems, highlighting their importance in the broader context of quantum mechanics.