How Quantum Batteries Could Become a Technological Sensation:Quantum in the buzzword in today’s electronics market. Asscientists decipher the secrets of the universe’s building block as well as uncover the laws that govern them, we’ve been able to predict and create somestunning pieces of equipment. Today, we look at batteries that never die.That’s right, the idea of needing to charge your battery may be a thing of thepast. To clarify, this isn’t endless or free energy, so thermodynamics is still a pesky annoyance.For more on this awesome battery concepts, see:

Battery InfiniteQuantum is the

buzzword in today’s electronics market. As scientists decipher the secrets of the universe’s building block as well as uncover the laws that govern them, we’ve

been able to predict and create some stunning pieces of equipment. Today, we look at batteries that never die.

That’s right, the idea of needing to

charge your battery may be a thing of the past. To clarify, this isn’t endless or free energy, so thermodynamics is still a pesky annoyance.

 

At the moment, all (or, the vast majority) of all mechanical equipment uses classical mechanics; from the battery you use to power your cell phone to the

engine you use to drive your car classical mechanics rules the day. In the grand scheme of nature’s laws, those found in classical mechanics are horribly

inefficient. These systems work well below the thermodynamic limit, meaning that they usually take far more energy to run than they can produce. Quantum

mechanics offers us a way to greatly increase the efficiency of these machines… nature’s cheat codes if you will.

 

6024_433955613357520_1505602986_nThe question here is ‘how much work can be extracted from a quantum system’. We’ve known for ages that it’s possible to harvest energy from

a selection of quantum states but not all of them. Since the laws that govern anything smaller than my finger get really strange, you can expect that quantum

mechanics also has some weird ideas here.

 

 (Very) loosely similar to potential and kinetic energy in classical devises, all of the

potential energy in passive quantum states is extractable – meaning you can use that energy to power systems elsewhere. This is where quantum entanglement comes in.

Einstein put it best when

he described this peculiar property of quantum mechanics as “spooky action at a distance.” Here, two or more particles are entangled which means they share the

same wave form. The more technical definition is:

“Quantum entanglement occurs when particles such as photons, electrons,

molecules as large as buckyballs, and even small diamonds interact physically and then become separated; the type of interaction is such that each resulting

member of a pair is properly described by the same quantum mechanical description (state), which is indefinite in terms of important factors such as position,

momentum, spin, polarization, etc.”

Digital-Quantum-Battery-LayoutWhen you have a single battery pulling energy from a quantum

state, it tends to operate well below the thermodynamic limit. Robert Alicki from the University of Gdansk in Poland and Mark Fannes from the University of

Leuven in Belgium managed to demonstrate that entangling quantum batteries together greatly increases their efficiency. So much that the more entangled

batteries in a system, the closer they approach the thermodynamic limit. According to the dynamic duo, if you get enough batteries entangled, you become so

arbitrarily close to the thermodynamic limit that you can consider the energy exchange ‘almost perfect’ (because, you can’t have a perfect energy exchange

without violating thermodynamics).

 

As always, there is a catch. Their calculations and experimentation doesn’t account for practical

limitations of this functionality. It might work perfectly well on a chalkboard in the lab but soon develop some issues in practicality in your pocket. Either

way, this is certainly worth investigating.

 


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Donovan Crow
Donovan Crow
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