Sooner than expected? Useful quantum error correction promised for 2028.
Summary
Amazon and the startup QuEra announced plans to deliver a quantum computer with error correction by 2028. This device, called Libra, will use a million quantum operations to handle scientific problems beyond current quantum and classical computers. The technology uses neutral atoms trapped by lasers, aiming to link many qubits for more reliable calculations.Key Facts
- Useful, error-corrected quantum computers were expected in 5 to 10 years, but Amazon and QuEra aim for 2028 (about 2 years from now).
- Libra will run hundreds of logical qubits, which are linked small groups of hardware qubits that detect and fix errors.
- Logical qubits require many hardware qubits; thousands are needed to solve practical problems in chemistry, physics, or breaking encryption.
- QuEra uses neutral atom quantum computing, trapping atoms in a grid using lasers, storing information in atomic spins.
- This technology can create many qubits (over 3,000 shown by research partners) but faces challenges like heating and slow atomic movement.
- Amazon’s Braket cloud service currently provides access to several quantum computing technologies, with Libra to be added.
- QuEra collaborates with Harvard and MIT, sharing research and technology for long-term development.
- Error correction is crucial for useful quantum computing, and the path from current demos to a high-quality system is still being worked on.
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