Quantum Computing Challenged By Security, Error Correction

The number and volume of warnings about a post-quantum cryptography (PQC) world are rising, as governments, banks, and other entities prepare for a rash of compromised data and untrustworthy digital signatures. Exactly when this will become a genuine threat is still somewhat fuzzy, because it depends on progress in developing robust qubits. A report by McKinsey & Co. estimates that by 20... » read more

Superconducting Qubits Made Using Industry-Standard, Advanced Semiconductor Manufacturing (imec, KU Leuven)

A new technical paper titled "High-coherence superconducting qubits made using industry-standard, advanced semiconductor manufacturing" was published by researchers at imec and KU Leuven. Abstract: "The development of superconducting qubit technology has shown great potential for the construction of practical quantum computers. As the complexity of quantum processors continues to grow, the ... » read more

Optimizing Quantum Gates For Error Correction in Superconducting Qubits (Google AI)

A new technical paper titled "Optimizing quantum gates towards the scale of logical qubits" was published by researchers at Google AI and UC Riverside. Abstract "A foundational assumption of quantum error correction theory is that quantum gates can be scaled to large processors without exceeding the error-threshold for fault tolerance. Two major challenges that could become fundamental road... » read more

Superexchange Coupling Of Donor Qubits In Si For Quantum Computers (UNSW)

A technical paper titled “Superexchange coupling of donor qubits in silicon” was published by researchers at University of New South Wales. Abstract: "Atomic engineering in a solid-state material has the potential to functionalize the host with novel phenomena. STM-based lithographic techniques have enabled the placement of individual phosphorus atoms at selective lattice sites of silicon... » read more

Research Bits: December 11

Diamond device with high breakdown voltage Researchers from the University of Illinois at Urbana-Champaign developed diamond p-type lateral Schottky barrier diodes they say have the highest breakdown voltage and lowest leakage current compared to previous diamond devices. The diamond device can sustain high voltage, approximately 5 kV, although the voltage was limited by setup of measurement a... » read more

Framework To Compile Quantum Programs Onto Chiplets (UCSB, Cisco)

A technical paper titled "Compilation for Quantum Computing on Chiplets" was published by researchers at UC Santa Barbara and Cisco Quantum Lab. Abstract: "Chiplet architecture is an emerging architecture for quantum computing that could significantly increase qubit resources with its great scalability and modularity. However, as the computing scale increases, communication between qubits w... » read more

Research Bits: May 30

Improving qubits Researchers from QuTech say they have improved the ‘Andreev spin qubit’ by taking the two most promising qubits — the spin qubits in semiconductors and transmon qubits in superconducting circuits — and finding a hybrid way that uses the best of both qubit types. “Spin qubits are small and compatible with current industrial technology, but they struggle with interact... » read more

Quantum: Loophole-​Free Bell Test with Superconducting Circuits (ETH Zurich)

A new technical paper titled "Loophole-free Bell inequality violation with superconducting circuits" was published by a group of researchers led by ETH Zurich. Abstract (partial) "Here we demonstrate a loophole-free violation of Bell’s inequality with superconducting circuits, which are a prime contender for realizing quantum computing technology. To evaluate a Clauser–Horne–Shimony... » read more

Quantum Light Source Fully Integrated On A Chip

A new technical paper titled "Quantum light source goes fully on-chip, bringing scalability to the quantum cloud" was published by researchers at Leibniz University Hannover, University of Twente and QuiX Quantum. Abstract: "Integrated photonics has recently become a leading platform for the realization and processing of optical entangled quantum states in compact, robust and scalable chip ... » read more

Transferring Qubits Directly Between Quantum Computing Microchips (U. of Sussex/ Universal Quantum)

A new technical paper titled "A high-fidelity quantum matter-link between ion-trap microchip modules" was published by researchers at University of Sussex, Universal Quantum Ltd, University College London and University of Bristol. “As quantum computers grow, we will eventually be constrained by the size of the microchip, which limits the number of quantum bits such a chip can accommodate.... » read more

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