9/5/2023 0 Comments Big quantum error after allIf you look at the quantum bits-called qubits-to check whether an error occurred, you destroy the information and can't use it in a future computation. For one, reading out quantum information destroys it. With quantum information, it's a bit trickier. Then, if by some chance an error flips one of the bits (say to 010), the majority vote still says 0. Classically, the brute force way to protect against errors is to repeat a bit of information-instead of 0, store or send 000. To protect fragile quantum information-and make stable quantum computers-there needs to be a way to correct errors. "And this makes quantum error correction very difficult." "The noise is very strong at the quantum scale," says Chapman. Powerful as they are, quantum computers are very difficult to build, in part because quantum information is very fragile and prone to errors. Perhaps most importantly, they would allow us to simulate the world in its full quantum complexity. ![]() Large-scale quantum computers, if built, would be able to factor numbers that stump even current supercomputers. Quantum computers are made up of quantum hardware, fundamentally different from our everyday, "classical" computers. They published their findings recently in the journal Physical Review X Quantum. Their ensuing collaboration resulted in a new tool that aids in the search for new quantum error correction schemes-including the Holy Grail of self-correcting quantum error correction. Kollár had been pursuing new work in graph theory to describe her photon-on-a-chip experiments, but some of her results turned out to be the missing piece in Chapman's puzzle. ![]() He was looking for new ways to approach a long-standing search for the Holy Grail of quantum error correction: a way of encoding quantum information that is resistant to errors by construction and doesn't require active correction. Chapman found graphs through his work in quantum error correction-a field that deals with protecting fragile quantum information from errors in an effort to build ever-larger quantum computers.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |