Quantum Computing

PostQuantum.com by Marin Ivezic – Quantum Computing, Quantum Technologies, Post-Quantum

  • Quantum Flapdoodle

    Quantum of Flapdoodle: A Guide to Quantum Hype and Scams

    The gap between the hard reality of quantum engineering and the sensational way it’s often portrayed has created a fertile breeding ground for misinformation and fraud. It ranges from innocuous exaggeration, to willful marketing spin, to serious financial scams and wild pseudoscience. Think of it as a “know your enemy”…

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  • Quantum Use Cases Healthcare Medical Research

    Quantum Use Cases in Healthcare & Medical Research

    Quantum computing has the potential to reshape global healthcare and medical research in the coming decades. From our current vantage point, we can see glimmers of its future impact: prototype quantum algorithms already accelerating drug discovery, early collaborations bringing quantum hardware into hospital research labs, and quantum-inspired methods optimizing healthcare…

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  • Entropy-Driven Photonic Quantum Computing

    Entropy-Driven Photonic Quantum Computing: A Critical Look at QCI’s Approach

    Quantum Computing Inc. (QCI) has introduced an unconventional paradigm in quantum computing called Entropy Quantum Computing (EQC). Unlike the standard approach of isolating qubits in pristine, ultra-cold environments, QCI’s method intentionally embraces environmental noise and loss as part of the computation. Their quantum processors, optical devices operating at room temperature,…

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  • China Quantum

    China’s Quantum Computing and Quantum Technology Initiatives

    In little over a decade, China transformed from a minor player into a quantum technology powerhouse. The talent has matured, and a new generation of Chinese quantum scientists is coming into its own – many trained at top universities domestically and abroad, now supported by some of the best facilities…

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  • Quantum Singapore ASEAN

    Quantum Technology Initiatives in Singapore and ASEAN

    ASEAN’s journey in quantum technology is relatively recent but steadily gaining momentum. Singapore took the lead in the early 2000s – the National Research Foundation began funding quantum research as early as 2002, and by 2007 the government helped establish the Centre for Quantum Technologies (CQT) at the National University…

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  • Quantum Russia

    Quantum Technologies and Quantum Computing in Russia

    Russia’s engagement with quantum science dates back to the Soviet era, which produced a strong foundation of theoretical physics and early quantum experiments. This legacy endures in the modern era – Russian experts often note that the “Soviet school of quantum physics was one of the best in the world,”…

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  • Variational Quantum Eigensolver (VQE)

    Variational Quantum Eigensolver (VQE) Breakthroughs

    The Variational Quantum Eigensolver (VQE), introduced in 2014, has rapidly become a flagship algorithm for simulating ground-state properties on today’s noisy quantum computers. Rather than running long quantum circuits, VQE uses short circuits and a classical optimizer in tandem: the quantum processor prepares a trial wavefunction with adjustable parameters, and…

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  • Quantum Contrarianism Skepticism

    Quantum Contrarianism

    Contrarianism in quantum tech, as in any tech, is best viewed as a tool, not a truth. It’s a tool for questioning and refining the narrative, for ensuring we don’t delude ourselves. But it is not the final truth of what the technology will or will not achieve – that…

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  • Quantum Cybersecurity

    Quantum Technologies and Cybersecurity: Threats and Defenses

    Quantum technologies introduce a new era for cybersecurity – one that is simultaneously perilous and full of potential. On the threat side, the advent of quantum computers threatens to upend the cryptographic protections we rely on daily, making it imperative that we transition to quantum-safe methods before quantum attackers emerge.…

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  • Quantum Computing Benchmarks

    Quantum Computing Benchmarks: RCS, QV, AQ, and More

    As quantum computing hardware rapidly improves, simple metrics like qubit count are no longer sufficient to gauge a system’s true capability. Unlike classical computers where transistor counts roughly correlate with performance, quantum bits (qubits) can be error-prone and short-lived, so a few high-fidelity qubits can be more valuable than many…

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  • Adiabatic Quantum Computing Quantum Annealing

    Adiabatic Quantum (AQC) and Cyber (2024 Update)

    Adiabatic Quantum Computing (AQC) is an alternative paradigm that uses an analog process based on the quantum adiabatic theorem. Instead of discrete gate operations, AQC involves slowly evolving a quantum system’s Hamiltonian such that it remains in its lowest-energy (ground) state, effectively “computing” the solution as the system’s final state​.…

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  • Quantum Computing Quantum Technology Europe EU

    Quantum Technology Initiatives in Europe and EU

    Europe’s quantum technology landscape has evolved from disparate academic projects into a coordinated multi-billion euro endeavor encompassing the EU and its member states. The historical commitment to quantum science is now manifesting in tangible outputs: prototype quantum computers in laboratories and supercomputing centers, quantum-secure communication testbeds linking cities, and quantum…

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  • Cybersecurity of Quantum Systems

    Quantum Hacking: Cybersecurity of Quantum Systems

    While these machines are not yet widespread, it is never too early to consider their cybersecurity​​. As quantum computing moves into cloud platforms and multi-user environments, attackers will undoubtedly seek ways to exploit them.

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  • Quantum Approximate Optimization Algorithm QAOA

    The Quantum Approximate Optimization Algorithm (QAOA) – A Beginner’s Guide

    At its core, QAOA is a hybrid quantum-classical algorithm that constructs a special kind of quantum circuit (or “ansatz”) to represent a candidate solution, and then uses a classical optimizer to tweak that circuit for better results. It was introduced in 2014 by Edward Farhi and collaborators as an algorithm…

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  • Quantum Tech Careers

    Career Opportunities in Quantum Technologies (No PhD Required)

    The landscape of careers in quantum technologies is incredibly rich and expanding by the day. What was once the domain of a few theoretical physicists is now a broad industry ecosystem hungry for talent from all backgrounds: software, hardware, analytics, management, and more. The driving premise is that you do…

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