Low-Overhead Fault-Tolerant Quantum Memory (IBM)

A new technical paper titled "High-threshold and low-overhead fault-tolerant quantum memory" was published by researchers at IBM Quantum. Abstract "The accumulation of physical errors prevents the execution of large-scale algorithms in current quantum computers. Quantum error correction promises a solution by encoding k logical qubits onto a larger number n of physical qubits, such t... » read more

Research Bits: Feb. 13

Fast phase-change memory Researchers from Stanford University, TSMC, National Institute of Standards and Technology (NIST), and University of Maryland developed a new phase-change memory for future AI and data-centric systems. It is based on GST467, an alloy of four parts germanium, six parts antimony, and seven parts tellurium, which is sandwiched between several other nanometer-thin material... » read more

Using Atomic Vacancies In Silicon Carbide To Measure The Stability And Quality Of Acoustic Resonators

A technical paper titled “Spin-acoustic control of silicon vacancies in 4H silicon carbide” was published by researchers at Harvard University and Purdue University. Abstract: "Bulk acoustic resonators can be fabricated on the same substrate as other components and can operate at various frequencies with high quality factors. Mechanical dynamic metrology of these devices is challenging as... » read more

How A Fault-Tolerant Quantum Memory Could Be Realized Using Near-Term Quantum Processors With Small Qubit Overhead

A technical paper titled “High-threshold and low-overhead fault-tolerant quantum memory” was published by researchers at IBM T.J. Watson Research Center and MIT-IBM Watson AI Lab. Abstract: "Quantum error correction becomes a practical possibility only if the physical error rate is below a threshold value that depends on a particular quantum code, syndrome measurement circuit, and a decod... » read more