Search results for: Alice & Bob

DARPA's Quantum Benchmarking Initiative (QBI), launched in July 2024, aims to identify and verify approaches for building fault-tolerant quantum computers that can achieve utility-scale operation, meaning its computational value exceeds its cost by 2033. Eighteen quantum computing companies have entered Stage A of the program, where they will provide detailed technical concepts over six months to show feasibility for creating utility-scale quantum systems. Funding for Stage A will be up to $1 million per company and the questions that a company will need to answer during Stage A include: How does your company want to build their quantum computer? Why will [...]

By Michael Baczyk 2025 has been declared the International Year of Quantum Science and Technology. This is a global recognition of quantum’s transformative potential, but make no mistake—this is also the beginning of the end. The end of the hype-fueled era where quantum computing was a playground for lofty promises and speculative investment. Now, only those who deliver real, scalable solutions will survive. The industry is shifting from experimental fascination to a measurable sector. The expectations are high, and the margin for failure is shrinking. Quantum Investment Funds Are Gaining Traction The funding landscape is shifting from general tech bets to quantum-dedicated capital. Notable recent moves include: [...]

2024 has seen an unprecedented wave of quantum computing roadmaps, with thirteen players either announcing new development paths or significantly updating existing ones. Never before has the industry seen such a concentrated period of concrete technical commitments and public timelines, marking a shift from general promises to specific, measurable goals. Recent Roadmap Announcements The following list summarizes this year’s developments: New Roadmaps QuEra Computing (January 2024): Three-year roadmap through 2026, targeting 100 logical qubits. Infleqtion (February 2024): Four-year roadmap through 2028, planning for over 100 logical qubits with 40,000 physical qubits. Pasqal (March 2024): Five-year roadmap through 2028+, targeting fault-tolerant quantum [...]

Figure. QEYSSat: A quantum receiver in space. Credit: Canadian Space Agency by Amara Graps It’s a simple idea.  XOR, ⊕, is a bitwise operator, that means "exclusive or." The logical operation it performs, is: if the input bits are the same, then the output bit will be false (0) else true (1). XOR table: XYX⊕ Y000011101110 How Quantum Key Distribution (QKD) Works  Quantum Key Distribution (QKD) is built upon the XOR. How does that work?  Let X = a sender: Alice, and Y = a receiver: Bob. From Alice’s and Bob’s shared key, which is a binary string, Alice’s binary message to [...]

We have reported recently on many developments in fault tolerant computer research with many different codes such as the surface code and q-LDPC (Quantum Low Density Parity Check) being researched. But a big concern about many of these error correction codes is the large overhead they will require in order to achieve a low enough error rate for a usable quantum advantage. For example, several proposed implementations of the surface code would require 1000 physical qubits to create one logical qubit with an acceptable error rate. Recently, we have started see a few efforts to develop codes or technologies that have [...]

Riverlane, a global leader in quantum error correction technology, has announced its membership in the Quantum Energy Initiative (QEI). This global community of quantum technology companies and research organizations aims to minimize the environmental footprint of quantum technologies. Riverlane’s core product, the Quantum Error Correction Stack (Deltaflow), is being developed with a focus on energy efficiency. QEI members, including Microsoft Azure Quantum, IBM Quantum, and Alice & Bob, collaborate to define energy-based metrics for quantum technologies, derive fundamental bounds for energy consumption, use energetic efficiencies as optimization tools, and understand the impact of hardware and software on energy consumption. Riverlane’s Deltaflow.Decode [...]