Rydberg excitation of a Bose-Einstein condensate

arxiv.org ^ | March 2012 | M. Viteau1, M. Bason1, J. Radogostowicz2;3, N. Malossi1;2, O. Morsch1, D. Ciampini1;2;3, and E. Arim

[Kevmo]

Rydberg excitation of a Bose-Einstein condensate

http://arxiv.org/pdf/1203.1261v1.pdf

We have performed two-photon excitation via the 62P3=2 state to n=50-80 S or D Rydberg state
in Bose-Einstein condensates of rubidium atoms. The Rydberg excitation was performed in a quartz
cell, where electric fields generated by plates external to the cell created electric charges on the cell
walls. Avoiding accumulation of the charges and realizing good control over the applied electric field
was obtained when the fields were applied only for a short time, typically a few microseconds.
Rydberg excitations of the Bose-Einstein condensates loaded into quasi one-dimensional traps and
in optical lattices have been investigated. The results for condensates expanded to different sizes
in the one-dimensional trap agree well with the intuitive picture of a chain of Rydberg excitations
controlled by the dipole-dipole interaction. The optical lattice applied along the one-dimensional
geometry produces localized, collective Rydberg excitations controlled by the nearest-neighbour
blockade.
PACS numbers: 03.65.Xp, 03.75.Lm


…………………



V. CONCLUSIONS
We have demonstrated the controlled preparation
of Rydberg excitations in large ensembles of ultracold
atoms forming structures of localized collective excita-
tions, either self-generated by the long-range interactions
between Rydberg atoms or imposed by an optical lattice.
Our results can straightforwardly be extended to two-
and three-dimensional lattice geometries and to even
larger lattice spacings that will allow selective Rydberg
excitation on a single site. Furthermore, appropriate
detection techniques such as microchannel plates should
allow direct observation of the distribution of Rydberg
excitations in the lattice.
Classical and quantum correlations, and highly en-
tangled collective states are expected to be created, as
pointed out in [42] for one dimensional Rydberg gases
and in [43] for one-dimensional optical lattices. Our
results pave the way towards their controlled creation.

[jonrick46]

Thanks for the explanation. This type of nuclear physics will get us to a new energy source—maybe other uses we cannot even imagine.

[mikrofon]

We have performed two-photon excitation via the 62P3=2 state to n=50-80 S or D Rydberg state
in Bose-Einstein condensates of rubidium atoms. The Rydberg excitation was performed in a quartz cell

On the planet Ekos, Spock achieved excitation of rubindium crystals in a jail cell -- with a light bulb, no less...

[Flick Lives]

We have performed two-photon excitation via the 62P3=2 state to n=50-80 S or D Rydberg state in Bose-Einstein condensates of rubidium atoms.

Please, I'm eating!

[Slambat]

Well replicate me a burger and fries while your at it.

[Kevmo]

Thanks 4 Bumping The Thread T4BTT.

http://www.freerepublic.com/focus/chat/2965392/posts?page=19#19

[aruanan]

The results for condensates expanded to different sizes in the one-dimensional trap agree well with the intuitive picture of a chain of Rydberg excitations controlled by the dipole-dipole interaction.

There are few things more sweet than having results that agree well with one's intuitive picture.

[Kevmo]

Interesting conversation on this topic over at Vortex-L, on a different thread.

http://www.mail-archive.com/vortex-l@eskimo.com/msg82306.html

Re: [Vo]:LENR a gateway into the theory of everything.

Axil Axil Mon, 03 Jun 2013 11:13:49 -0700

The atoms in a Bose-Einstein condensate follow the Jaynes-Cummings model.

http://en.wikipedia.org/wiki/Jaynes%E2%80%93Cummings_model
Jaynes–Cummings model


More to the point, when a Ni/H system get going after state up, the systems
becomes totally entangled.


This type of system is described by the Jaynes–Cummings–Hubbard model

http://en.wikipedia.org/wiki/Jaynes%E2%80%93Cummings%E2%80%93Hubbard_model

Drawing a connection between the Ni/H reactor and a Bose-Einstein
condensate as follows:


http://www.ncbi.nlm.nih.gov/pubmed/20208523

In spite of their different natures, light and matter can be unified under
the strong-coupling regime, yielding superpositions of the two, referred to
as dressed states or polaritons. After initially being demonstrated in bulk
semiconductors and atomic systems, strong-coupling phenomena have been
recently realized in solid-state optical microcavities. Strong coupling is
an essential ingredient in the physics spanning from many-body quantum
coherence phenomena, such as Bose-Einstein condensation and superfluidity,
to cavity quantum electrodynamics. Within cavity quantum electrodynamics,
the Jaynes-Cummings model describes the interaction of a single fermionic
two-level system with a single bosonic photon mode. For a photon number
larger than one, known as quantum strong coupling, a significant
anharmonicity is predicted for the ladder-like spectrum of dressed states.
For optical transitions in semiconductor nanostructures, first signatures
of the quantum strong coupling were recently reported. Here we use advanced
coherent nonlinear spectroscopy to explore a strongly coupled
exciton-cavity system. We measure and simulate its four-wave mixing
response, granting direct access to the coherent dynamics of the first and
second rungs of the Jaynes-Cummings ladder. The agreement of the rich
experimental evidence with the predictions of the Jaynes-Cummings model is
proof of the quantum strong-coupling regime in the investigated solid-state
system.



This says to me that the Ni/H system obeys the same rules as the BEC.

I showed you that in such a Jaynes-Cummings system, the atoms share the
frequency of a quantum as defined by a coupling constant.

This how the FREQUENT of a gamma ray quantum is shared(chopped up) between
all the ensemble members of the NI/H system.






On Mon, Jun 3, 2013 at 1:51 PM, Edmund Storms wrote:

> Axil, I have no idea what your comment means in the context of the subject
> we are discussing here. Please explain.
>
> Ed Storms
>
> On Jun 3, 2013, at 11:44 AM, Axil Axil wrote:
>
> http://arxiv.org/pdf/1202.4827v1.pdf
>
> *Two coupled Jaynes-Cummings cells*
> **
> We develop a theoretical framework to evaluate the energy spectrum,
> stationary states, and dielectric susceptibility of two Jaynes-Cummings
> systems coupled together by the overlap of their respective longitudinal
> field modes, and *we solve and characterize the combined system for the
> case that the two atoms and two cavities share a single quantum of energy.
> *
>
>
> Here is how two entangled particles share a single quantum of energy
>
> You will notice that the each particle gets a part of the FREQUENCY of the
> quantum based on the coupling constant.
>
>
> See figures 3 and 4.
>
>
>
>
> On Mon, Jun 3, 2013 at 1:09 PM, Edmund Storms wrote:
>
>> Axil, you show that you have no understanding of the second law. The laws
>> of thermodynamics simply define how energy must flow in a system and how
>> the system must behave as a result of the energy. The laws do not address
>> the source. In the case of Rossi, he has an obvious source that cannot be
>> identified. This source has no relationship to the laws of thermodynamic.
>> Nevertheless, the energy that results from this source, regardless of how
>> it is created, MUST follow the laws of thermodynamics. NO VIOLATION
>> EXISTS.
>>
>> Ed Storms
>>
>> On Jun 3, 2013, at 10:57 AM, Axil Axil wrote:
>>
>> From the get go, when you come to think in more simple terms, isn’t
>> seeing a glowing pipe pumping out six time more energy than is going in a
>> de facto violation of the 2nd law of thermodynamics?
>>
>>
>>
>>
>> On Mon, Jun 3, 2013 at 12:52 PM, Axil Axil wrote:
>>
>>> I was going to write this post, but you beat me to it. Your post is
>>> more elegant and persuasive than mine would have been.
>>>
>>> This common flaw in the reason and logic that most people use, this 2nd
>>> law of thermodynamics hangup, is going to make the experimental revelation
>>> showing BEC activity in LENR too hard for people to take. They just won’t
>>> believe their lying eyes.
>>>
>>>
>>> On Mon, Jun 3, 2013 at 12:34 PM, Kevin O'Malley wrote:
>>>
>>>>
>>>>
>>>> On Mon, Jun 3, 2013 at 7:15 AM, Jed Rothwell wrote:
>>>>
>>>>> O'Malley wrote:
>>>>>
>>>>>>
>>>>>> ***Then as long as those theories can explain this experimental
>>>>>> result, everything is in good shape. Why would you say "That's not
>>>>>> good"?
>>>>>>
>>>>>> This is an experimental finding, not a theory.
>>>>>>
>>>>>
>>>>> It is not good because the laws of thermodynamics are probably right
>>>>> and therefore this experimental result is probably wrong.
>>>>>
>>>> ***Sounds a lot like the entire field of LENR.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> Until it is widely replicated most people will assume it is wrong.
>>>>>
>>>> ***Let me see -- LENR, 14,700 replications. Most people still assume
>>>> it's wrong. There is the distinct possibility that this BEC experiment
>>>> could be widely replicated and most people will assume it is wrong.
>>>>
>>>>
>>>>
>>>>
>>>>> The problem there is that people seldom try to replicate results which
>>>>> appear to be wrong on the face of it.
>>>>>
>>>> ***What we have here is an experimental piece of the puzzle that shows
>>>> BECs absorb energy and could account for the 2nd miracle of missing gammas
>>>> in LENR. Y E Kim's theory has been given yet another leg up. First, it
>>>> was high temperature BECs forming. Second, it is that BECs absorb energy.
>>>> BECs do not "disobey" the 2nd law of thermodynamics any more than plasmas
>>>> do.



.

❑ ❑ ❑

[Kevmo]

It might make sense for this finding to have its own thread.


The atoms in a Bose-Einstein condensate follow the Jaynes-Cummings model.

http://en.wikipedia.org/wiki/Jaynes%E2%80%93Cummings_model

Jaynes–Cummings model


More to the point, when a Ni/H system get going after state up, the systems
becomes totally entangled.


This type of system is described by the Jaynes–Cummings–Hubbard model

http://en.wikipedia.org/wiki/Jaynes%E2%80%93Cummings%E2%80%93Hubbard_model

Drawing a connection between the Ni/H reactor and a Bose-Einstein
condensate as follows:


http://www.ncbi.nlm.nih.gov/pubmed/20208523

In spite of their different natures, light and matter can be unified under
the strong-coupling regime, yielding superpositions of the two, referred to
as dressed states or polaritons. After initially being demonstrated in bulk
semiconductors and atomic systems, strong-coupling phenomena have been
recently realized in solid-state optical microcavities. Strong coupling is
an essential ingredient in the physics spanning from many-body quantum
coherence phenomena, such as Bose-Einstein condensation and superfluidity,
to cavity quantum electrodynamics. Within cavity quantum electrodynamics,
the Jaynes-Cummings model describes the interaction of a single fermionic
two-level system with a single bosonic photon mode. For a photon number
larger than one, known as quantum strong coupling, a significant
anharmonicity is predicted for the ladder-like spectrum of dressed states.
For optical transitions in semiconductor nanostructures, first signatures
of the quantum strong coupling were recently reported. Here we use advanced
coherent nonlinear spectroscopy to explore a strongly coupled
exciton-cavity system. We measure and simulate its four-wave mixing
response, granting direct access to the coherent dynamics of the first and
second rungs of the Jaynes-Cummings ladder. The agreement of the rich
experimental evidence with the predictions of the Jaynes-Cummings model is
proof of the quantum strong-coupling regime in the investigated solid-state
system.



This says to me that the Ni/H system obeys the same rules as the BEC.

I showed you that in such a Jaynes-Cummings system, the atoms share the
frequency of a quantum as defined by a coupling constant.

This how the FREQUENCY of a gamma ray quantum is shared(chopped up) between
all the ensemble members of the NI/H system.






.

❑ ❑ ❑