How close are we to a quantum computer?

At the beginning of 2019, IBM unveiled its first commercial quantum computer. Fast forward to January 2020, and the company claimed at CES 2020 that we are now in the decade (the 2020s) of quantum computing.

How long would it take a quantum computer to crack AES 256?

With the right quantum computer, AES-128 would take about 2.61*10^12 years to crack, while AES-256 would take 2.29*10^32 years.

How long would it take a quantum computer to crack 128 bit encryption?

But using quantum technology with the same throughput, exhausting the possibilities of a 128-bit AES key would take about six months.

How far are we from commercial quantum computing?

How Close Are We to a Commercial Quantum Computer? At the beginning of 2019, IBM unveiled its first commercial quantum computer. Fast forward to January 2020, and the company claimed at CES 2020 that we are now in the decade (the 2020s) of quantum computing.

When will quantum computers be available to the public?

In the 2020s, we will have quantum computers that are significantly better than super computers today, but they most likely won’t be in mass use by governments and companies until the 2030s. Eventually toward the end of the 2030s and early 2040s they’ll shrink down to a size and cost viable for consumer use.

Who is building the first quantum computer?

In the US, Google, IBM and NASA are experimenting and building the first quantum computers. China is also investing heavily in quantum technology. I believe that there will be an analogous shift toward quantum computing, where enthusiasts will be able to play with quantum computers from their homes.

How many qubits do you need for quantum computing?

You need two qubits to talk to one another to do large “entangled” calculations, and different qubit types have different ways of entangling. The type that I described as needing extreme cooling is called a superconducting system, which includes our Tangle Lake processor as well as quantum computers being built by Google, IBM and others.

What is quantum computing and why does it matter?

It was the shift in who would use computers and where, as they became available to everyone to use in their own home. Today, quantum computing is in its infancy. Quantum computation incorporates some of the most mind-bending concepts from 20th-century physics.