IBM researchers have published a paper describing a quantum error reduction technique that combines two previously separate methods, as major technology companies push toward commercial quantum computing by the end of the decade.. The paper, posted on arXiv, introduces a method called spacetime probabilistic error cancellation, which layers probabilistic error cancellation on top of quantum error detection..
The hybrid approach was verified on IBM’s Aachen superconducting quantum processor and cuts the sampling overhead of error mitigation by a factor of 63, according to Quantum Computing Report.. Seoul Economic Daily reported that the combined method can screen out up to 65% of errors in advance..
IBM has also been expanding its hardware system. The company said in August that it had joined and cooled two modular cryogenic cells into a single operating environment at its Poughkeepsie, New York, facility.. Each module houses a single quantum chip and links adjacent cells, reducing wiring and noise.
IBM plans to install its Quantum Nighthawk processors in the modules later this year.. IBM aims to connect at least 1,000 programmable qubits by 2027 as part of its path toward IBM Quantum Starling, a fault-tolerant quantum computer it has slated for 2029.. Intel CEO Lip-Bu Tan said at a conference in mid-September that quantum processors would develop alongside CPUs and GPUs rather than replace them..
“GPUs, CPUs and quantum are all forms of computing, so they will run together in some application areas and make quantum computing more efficient to use,” Tan said.. Tan added that his immediate focus was error correction and finding customers willing to pay for early quantum services..
Intel Labs is working on Tunnel Falls, a silicon spin qubit device that operates at higher temperatures than most competing architectures. The company previously developed Horse Ridge II, a cryogenic control chip.. Microsoft unveiled its Majorana 2 quantum chip in June and is targeting 2029 for a commercial quantum computer.
Amazon AI chief Peter DeSantis told CNBC he expects the first commercially valuable small quantum machines within five to seven years.. Featured image credit. Tags: ibmquantum
