Backward Evolving Quantum States

Abstract

The basic concept of the two-state vector formalism, which is the time symmetric approach to quantum mechanics, is the backward evolving quantum state. However, due to the time asymmetry of the memory's arrow of time, the possible ways to manipulate a backward evolving quantum state differ from those for a standard, forward evolving quantum state. The similarities and the differences between forward and backward evolving quantum states regarding the no-cloning theorem, nonlocal measurements, and teleportation are discussed. The results are relevant not only in the framework of the two-state vector formalism, but also in the framework of retrodictive quantum theory.

Contribution to the J.Phys. A special issue in honor of GianCarlo Ghirardi

References in corpus (2)

• Two-time interpretation of quantum mechanics
• Nonlocal Measurements in the Time-Symmetric Quantum Mechanics

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• Teleportation of Post-Selected Quantum States