What is vibrational dephasing?

Dephasing is a central concept in condensed phase spectroscopy. It determines how long a system will maintain its coherence. Dephasing of vibrational states between v = 2 and v = 16 have been studied in the temperature range T = 2.6 – 32 K.

What is pure dephasing time?

Pure Dephasing Given enough time, the correlation of phase becomes completely randomized, and evolution of the quantum system’s Rabi cycle ceases. This pure dephasing time produces a hard time limit for which a light field can progress a system through the Rabi cycle.

What causes quantum decoherence?

Decoherence happens when different portions of the system’s wave function become entangled in different ways with the measuring device. As a consequence, the system behaves as a classical statistical ensemble of the different elements rather than as a single coherent quantum superposition of them.

What is MRI dephasing?

An MRI term of art referring to the fanning out or loss of phase coherence of signals within the transverse plane.

What is the temperature range for dephasing of vibrational states?

Dephasing of vibrational states between v = 2 and v = 16 have been studied in the temperature range T = 2.6 – 32 K. F.P. Laussy, C. Tejedor, in Quantum Optics with Semiconductor Nanostructures, 2012

What happens to coherence in a dephasing wave?

The coherence terms decay with the dephasing time or spin–spin relaxation, T2 . After coherence is created in a sample by light, the sample emits a polarization wave, the frequency of which is equal to and the phase of which is inverted from the incident light.

How is dephasing used to recover classical behaviour?

Dephasing is a mechanism that recovers classical behaviour from a quantum system. It refers to the ways in which coherence caused by perturbation decays over time, and the system returns to the state before perturbation.

What is the meaning of dephasing in physics?

In physics, dephasing is a mechanism that recovers classical behaviour from a quantum system. It refers to the ways in which coherence caused by perturbation decays over time, and the system returns to the state before perturbation.

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