Fujitsu and Osaka University’s Center for Quantum Information and Quantum Biology (QIQB) introduced the event of a brand new, extremely environment friendly analog rotation quantum computing structure, representing a major milestone towards the conclusion of sensible quantum computing. The new structure reduces the variety of bodily qubits required for quantum error correction – a prerequisite for the conclusion of fault-tolerant quantum computing – by 90% from 1 million to 10,000 qubits. This breakthrough will permit analysis to embark on the development of a quantum pc with 10,000 bodily qubits and 64 logical qubits, which corresponds to computing efficiency of roughly 100,000 occasions that of the height efficiency of typical high-performance computer systems.
Moving ahead, Fujitsu and Osaka University will additional refine this new structure to guide the event of quantum computer systems within the early FTQC period, with the intention of making use of quantum computing functions to a variety of sensible societal points together with materials improvement and finance.
Visual: Image of the newly developed quantum computing structure
Error correction for fault-tolerant computing: making sensible quantum a actuality
Gate-based quantum computer systems are anticipated to revolutionize analysis in a variety of fields together with quantum chemistry and sophisticated monetary methods, as they’ll supply considerably greater calculation efficiency than present classical computer systems.
Logical qubits, which include a number of bodily qubits, play a significant key position in quantum error correction know-how, and finally the conclusion of sensible quantum computer systems that may present fault-tolerant outcomes.
Within typical quantum computing architectures, calculations are carried out utilizing a mix of 4 error-corrected common quantum gates (CNOT, H, S, and T gate). Within these architectures, particularly quantum error correction for T-gates requires a lot of bodily qubits, and rotation of the state vector within the quantum calculation requires repeated logical T-gate operations for about fifty occasions on common. Thus, the conclusion of a real fault-tolerant quantum pc is estimated to require a couple of million bodily qubits in whole.
For this motive, quantum computer systems within the early FTQC period utilizing typical structure for quantum error correction can solely conduct calculations on a really restricted scale beneath that of classical computer systems, as they work with a most of about 10,000 bodily qubits, a quantity far beneath that required for real, fault-tolerant quantum computing.
To deal with these points, Fujitsu and Osaka University developed a brand new, extremely environment friendly analog rotation quantum computing structure that is ready to considerably cut back the variety of bodily qubits required for quantum error correction, and allow even quantum computer systems with 10,000 bodily qubits to carry out higher than present classical computer systems, accelerating progress towards the conclusion of real, fault-tolerant quantum computing.
Fujitsu and Osaka University have been selling joint R&D in quantum error correction know-how together with new quantum computation architectures for the early FTQC period on the “Fujitsu Quantum Computing Joint Research Division,” a collaborative analysis effort of the QIQB, established on October 1, 2021 on the campus of Osaka University as a part of Fujitsu’s “Fujitsu Small Research Laboratory” program.
About the newly developed quantum computing structure
By redefining the common quantum gate set, Fujitsu and Osaka University succeeded in implementing a section rotating gate – a world first – which allows extremely environment friendly section rotation, a course of which beforehand required a excessive variety of bodily qubits and quantum gate operations.
In distinction to traditional architectures that required repeated logical T-gate operations utilizing a lot of bodily qubits, gate operation inside the new structure is carried out by section rotating on to any specified angle.
In this manner, the 2 events succeeded in decreasing the variety of qubits required for quantum error correction to round 10% of current applied sciences, and the variety of gate operations required for arbitrary rotation to approx. 5% of typical architectures. In addition, Fujitsu and Osaka University suppressed quantum error chance in bodily qubits to about 13%, thus reaching extremely correct calculations.
The newly developed computing structure lays the muse for the development of a quantum pc with 10,000 bodily qubits and 64 logical qubits, which corresponds to computing efficiency of roughly 100,000 occasions that of the height efficiency of typical excessive efficiency computer systems.