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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Entanglement evolution in finite dimensions.

Markus Tiersch1, Fernando de Melo, Andreas Buchleitner

  • 1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Strasse 3, Freiburg, Germany. markus.tiersch@physik.uni-freiburg.de

Physical Review Letters
|November 13, 2008
PubMed
Summary
This summary is machine-generated.

We discovered a simple relation describing how entanglement in quantum systems changes during physical processes. This dynamics is fully determined by a single, easily calculable quantity.

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Area of Science:

  • Quantum Information Science
  • Quantum Entanglement Dynamics

Background:

  • Entanglement is a key quantum resource, crucial for quantum computing and communication.
  • Understanding how entanglement evolves under physical processes is fundamental for quantum technologies.

Purpose of the Study:

  • To derive a general relation for the evolution of entanglement between two d-level quantum systems.
  • To identify a single quantity that fully characterizes this entanglement dynamics.

Main Methods:

  • The study employs theoretical analysis of quantum system evolution.
  • Mathematical derivations are used to establish the relationship between entanglement and physical processes.

Main Results:

  • A simple mathematical relation is provided for entanglement evolution.
  • The dynamics of entanglement is shown to be fully captured by one specific quantity.

Conclusions:

  • The derived relation offers a simplified approach to analyzing entanglement dynamics.
  • This finding has implications for the control and preservation of entanglement in quantum systems.