Einstein's dream surpassed
(PhysOrg.com) -- A constant stabilization experiment of a quantum state has been successfully carried out for the first time by a team from the Laboratoire Kastler Brossel headed by Serge Haroche. The researchers succeeded in maintaining a constant number of photons in a high-quality microwave cavity. The results of their study are published in the online journal Nature on September 1, 2011.
The photon, the basic unit of light, can normally only be observed when it disappears. The eye absorbs photons, destroying them and translating the information they carry as it is recorded. However, this destruction is not indispensable. Four years ago, a team from the Laboratoire Kastler Brossel made a major breakthrough: observing, hundreds of times, a single and same microwave photon trapped in a box.
In their new work, the researchers have gone even further: they have succeeded in stabilizing a given number of photons in a photon box, a cavity formed of two superconducting mirrors. It is the first complete experiment of quantum stabilization. Generally speaking, stabilizations ensure the operation of the systems that surround us. In the case of an oven, its heating temperature is dependent on a set value: as long as the ideal temperature has not been reached, the oven continues to heat up then maintains its state according to the thermostat readings.
The transfer of these concepts to the microscopic quantum world comes up against an obstacle: the measurement the thermometer changes the state of the system. Quantum stabilization consists in a measurement performed through the injection of atoms, ultrasensitive probes, into the cavity. This measurement does not fix the number of photons, but provides a vague estimation. Like any quantum measurement, it however modifies the state of the cavity. A monitor the thermostat takes into account this information as well as the perturbation of the measurement and controls a conventional microwave source the oven's heating elements. In this way, the cavity is taken or returned to a state where the number of photons has exactly the prescribed value.
Einstein had a dream: to trap a photon in a box for a period of around one second. This quantum stabilization has now enabled the LKB group to go even further in fulfilling this dream by maintaining, in a permanent manner, a given number of photons in the box. This experiment represents an important step in the control of complex quantum states.
More information: Real-time quantum feedback prepares and stabilizes photon number states, C. Sayrin, et al., Nature, 1st September 2011.
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No, or they would have violated entropy. It sounds like they got a system to hold photons with the same quantum properties, ie. when the photons interact with the system boundary (not the measuring device, that is separate) they got the boundary to emit a photon with the same properties as the ones it interacted with. Notice they had to 'adjust the ... heating elements' to get this to work, so they essentially added energy, satisfying entropy.
Sep 02, 2011
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Ahh, ok, I get it. Thank you.
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LOL what the hell are you talking about?
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Sep 04, 2011
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LOL, ignorant of both political philosophy and basic science.
Sep 04, 2011
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must be the same hand that controls the Vendecar sock-puppet.
Sep 04, 2011
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"In their new work, the researchers have gone even further: they have succeeded in stabilizing a given number of photons in a photon box, a cavity formed of two superconducting mirrors. It is the first complete experiment of quantum stabilization. Generally speaking, stabilizations ensure the operation of the systems that surround us. In the case of an oven, its heating temperature is dependent on a set value: as long as the ideal temperature has not been reached, the oven continues to heat up then maintains its state according to the thermostat readings."
Sep 04, 2011
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The key word here is quantum stabilization. The ideal mirror doesn't exist, and this is also reflected in the words microwave-oven. The degree of loss at the reflection points must be known and compensated for.
Entropy shouldn't be associated with this article.
At the cavity walls, there must be energy balance otherwise the system cannot be considered a true quantum equilibrium. In other words, one could select the cavity walls as the system boundary and classify the system as a closed system as long as equilibrium remains true. The energy input of the microwave often should be considered needed to ensure integrity of the boundary.
Also, this experiment is particular to a predetermined wavelength (micro's) and frequency, though it should still work as a general principle.
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You're questioning a general theory of thermodynamics by stating that their must be some sort of negentropy resulting from the big bang. What you fail to understand is that 'negative entropy' is not true in that sense. You're taking the definition out of context. And then you proceed to criticize engineers for not understanding how 'open systems' behave due to your so called negentropy. Start by picking up a physics textbook. If you still believe everyone's wrong, then I suggest you write a paper on the topic of negentropy at the beginning of the universe and then have it be peer reviewed. Otherwise, you're still a crackpot.
Sep 14, 2011
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The real questions are Why? and How?
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given general understanding ,,,
entropy should be exactly cancelled at the interface/mirror and points of interface/registration since their boundary is uniquely known thus to achieve dynamic stabilization over general
pinpointing the angle, point,& moment of exchange... a hard one: so, who's up for ray tracing?