coherent state

A coherent state is not a point in the optical phase space but rather a distribution on it.

In the absence of a coherent state policy, little municipalities try to control the chaos.

Thus, laser light is idealized as a coherent state.

The name coherent state took hold after Glauber's work.

By construction, P for a coherent state is simply a delta function:

Within quantum mechanics, such a wave can be approximated with a coherent state.

An atom laser is a coherent state of propagating atoms.

Therefore one can interpret the quantum noise of a coherent state as being due to the vacuum fluctuations.

However, the backup host has everything except for the very latest changes, and may indeed be able to resume operation from its last known coherent state.

In this sense, it is a generalization of the ground state as well as the coherent state.

A remarkable swell of volunteers aimed to fill in for the lack of a coherent state response.

The perfect coherent state has all n-orders of correlation equal to 1 (coherent).

Further to this, there was a suggestion that the microtubules could be pumped into a coherent state by biochemical energy.

So the coherent state is an eigenstate of the annihilation operator in the Heisenberg picture.

It may also act on the vacuum state by displacing it into a coherent state.

The phase-shifting operator rotates the coherent state by an angle in the optical phase space.

If this is not done, the pixels will gradually lose their coherent state, and the image will "fade" from the screen.

This does not mean that the output is a coherent state; optical quantum amplifiers with feedback are examples.

See coherent state and squeezed coherent state for more details.

As the phase increases the coherent state circles the origin and the disk neither distorts nor spreads.

In the thermal (bunched) case, the number of fluctuations is larger than a coherent state; for an antibunched source they are smaller.

He coined the term coherent state and showed that they are produced when a classical electrical current interacts with the electromagnetic field.

One may think of a non-linear coherent state by generalizing the annihilation operator:

The coherent state represents the minimum uncertainty; as the state is transformed, the uncertainty may increase.

In the following consideration, only the matrix representation is used; all the brackets are assumed to be evaluated with respect to the initial coherent state.