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Businessman gives the bitcoin man.selective focus.block chain Technology concept.War of bitcoin,Digital currency.

The Startling Energy Costs of Bitcoin

As Bitcoin gains credibility, power consumption worries grow

Most people are aware of the rising price of Bitcoin. Despite the fact that most people are unaware of how to transact in it, and few merchants take it as a form of currency, Bitcoin is becoming an increasingly popular investment. As interest in Bitcoin grows, a few people are starting to take notice of the startling energy costs associated with Bitcoin transactions. As Mind Matters has been pointing out for years, the energy costs associated with having a “trustless” system such as Bitcoin is immense, with Bitcoin transactions generally costing 400,000 times as much energy as a single transaction on the Visa network. According to the BBC, the Bitcoin network – which, again, very few people are regularly transacting in – now consumes more energy than the…

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quantum computer closeup

Could Slowing Quantum Processes Lead To More Useful Computing?

“Adiabatic” quantum computing slows down the process, in the hope of achieving more reliable quantum positions

In a recent podcast, “Enrique Blair on quantum computing,” Walter Bradley Center director Robert J. Marks talks with fellow computer engineer Enrique Blair about why quantum mechanics is so strange but important to our future. They discussed the prospects of slowing down quantum computing to make it more useful (adiabatic computing). https://episodes.castos.com/mindmatters/Mind-Matters-110-Enrique-Blair.mp3 The discussion of quantum communication begins at approximately 58:47. The Show Notes and transcript follow. Enrique Blair (pictured): I guess the challenge with entangling massive numbers of quantum systems is that entanglement becomes much more fragile. In quantum communication, you just need pairs of photons to be entangled. One with another, that’s it. Whereas with quantum computing, you need many, many systems to be entangled, and that’s just…