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Quantum Computing News 25 August 2025 - 23 September 2025

Rigetti Computing’s Quantum Leap: Stock Soars on Breakthroughs and Bold Bets

Rigetti Computing’s Quantum Leap: Stock Soars on Breakthroughs and Bold Bets

Rigetti Computing (RGTI) Overview and Stock Update as of September 23, 2025 Stock Performance: Blasting Off to New Highs Rigetti’s stock has been on a tear in 2025, with its ascent accelerating dramatically in recent weeks. On September 22, shares reached an intraday high of $29.59, marking a fresh 52-week peak marketbeat.com. This is a remarkable climb considering RGTI traded in the low-teens just a month prior. In fact, since late August, the stock has more than doubled, rising about 100% in under a month 247wallst.com. Over a slightly longer span – mid-August to now – Rigetti is up roughly
23 September 2025
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Quantum Computing Inc (QUBT) – Quantum Hype or The Next Tech Breakthrough? 📈⚛️

Quantum Computing Inc (QUBT) – Quantum Hype or The Next Tech Breakthrough? 📈⚛️

Company (Ticker) Quantum Tech Market Cap Q2 2025 Revenue Q2 Net Loss Cash (mid-2025) Quantum Computing Inc. (QUBT) Photonic (Integrated optics) ~$3.3 B moomoo.com (stock ~$20) $61 K quantumcomputinginc.com (–67% YoY) $–36.5 M quantumcomputinginc.com (widened by warrant charges) ~$349 M (June 30) quantumcomputinginc.com → $850 M after Sept raise quantumcomputinginc.com IonQ (IONQ) Trapped-ion qubits ~$14 B (stock ~$72) dividendstocks.cash fastcompany.com $20.7 M datacenterdynamics.com (+15% vs guidance) $–177.5 M datacenterdynamics.com $500M+ (raised via SPAC & strategic investors) Rigetti (RGTI) Superconducting qubits (gate model) ~$2–3 B (stock ~$22) fastcompany.com $1.8 M datacenterdynamics.com $–39.7 M datacenterdynamics.com $571.6 M datacenterdynamics.com D-Wave (QBTS) Quantum annealing ~$2 B (stock ~$22) fastcompany.com $3.1 M datacenterdynamics.com $–167.3 M datacenterdynamics.com (incl. big warrant charge)
23 September 2025
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Global Markets on Edge as Fed Rate Decision Nears: Asia Optimistic, West Cautious

Quantum Gold Rush: QUBT vs. D-Wave – Inside the High-Stakes 2025 Quantum Computing Showdown

In-Depth Report Company Overviews & Quantum Approaches Quantum Computing Inc. (QUBT) – Photonic Quantum Tech at Room Temperature: Quantum Computing Inc., branded as QCi, is a small-cap quantum technology company that has captured outsized attention due to its unconventional approach. Rather than using superconducting circuits or ion traps like many competitors, QCi focuses on photonic quantum computing – using particles of light (photons) passing through specialized optical chips to perform computations. The company’s core technology revolves around thin-film lithium niobate (TFLN) photonic integrated circuits nasdaq.com. This approach potentially offers a big advantage: QCi’s photonic qubits can operate at ambient room
20 September 2025
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Global Markets on Edge as Fed Rate Decision Nears: Asia Optimistic, West Cautious

Quantum Leap: Why IonQ, Rigetti, and D-Wave Stocks Are Soaring in a Tech Breakout

Introduction: A Quantum Stock Boom Not long ago, quantum computing felt like science fiction. Today, it’s driving some of the stock market’s most explosive rallies. Over the past year, shares of the leading pure-play quantum computing companies have skyrocketed, far outpacing even other hot tech sectors. D-Wave Quantum (NYSE: QBTS) surged +2,158%, Rigetti Computing (Nasdaq: RGTI) jumped +2,448%, and IonQ (NYSE: IONQ) climbed +705% in just 12 months fastcompany.com. By comparison, even the electric vehicle and AI stock frenzies didn’t produce such across-the-board gains. This “quantum boom” has pushed the trio – sometimes dubbed the “Quantum Four” along with smaller
19 September 2025
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Massive $39B UK–US Tech Alliance Unites Microsoft, Google & NVIDIA in AI and Quantum Power Play

Massive $39B UK–US Tech Alliance Unites Microsoft, Google & NVIDIA in AI and Quantum Power Play

Inside the UK–US Tech Prosperity Deal: Who’s Involved and What It Entails The UK Parliament in London. The UK and US have agreed to a historic tech partnership aiming to revolutionize the AI and quantum sectors. In September 2025, the United Kingdom and United States unveiled a sweeping new technology partnership during a U.S. presidential state visit. Billed as a “Tech Prosperity Deal,” the agreement links the two nations in developing cutting-edge tech industries – chiefly artificial intelligence (AI) and quantum computing – with support from major companies on both sides of the Atlantic thequantuminsider.com. The announcement came with splashy
18 September 2025
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Mining the Moon’s Helium-3: The Key to a Quantum Computing and Energy Revolution

Mining the Moon’s Helium-3: The Key to a Quantum Computing and Energy Revolution

What Is Helium-3 and Why Is It So Important? Infographic: Helium-3 is continually generated by fusion reactions in the Sun and carried by the solar wind. The Moon, lacking a magnetic field, has absorbed this isotope for billions of years, whereas Earth’s magnetic field shields us from most Helium-3 interlune.space. Helium-3 (He-3) is a lightweight, non-radioactive isotope of helium with two protons and one neutron (regular helium-4 has two neutrons). On Earth it is extremely scarce – mostly a byproduct from the decay of tritium in nuclear weapons and reactors sciencefocus.com. In total, only a few dozen kilograms are produced
17 September 2025
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Quantum Breakthrough: UK Startup Unveils First Quantum Computer Built with Standard Silicon Chips

Quantum Breakthrough: UK Startup Unveils First Quantum Computer Built with Standard Silicon Chips

Background: A Quantum Computer Built on Everyday Silicon Quantum Motion’s announcement represents a significant first in quantum computing: a functioning quantum computer built entirely using conventional silicon chips instead of the esoteric hardware typical of quantum labs. The London-based startup – a 2017 spinout of University College London and Oxford University – was founded by professors John Morton and Simon Benjamin specifically to pursue CMOS-based quantum processors datacenterdynamics.com. After several years of research and prototyping, the company unveiled its breakthrough system on September 15, 2025, as part of a UK government-backed initiative to commercialize scalable quantum hardware tomshardware.com. The new
17 September 2025
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Quantum Revolution 2025: Unhackable Encryption, Superspeed Computing & the 6G Quantum Future

Quantum Revolution 2025: Unhackable Encryption, Superspeed Computing & the 6G Quantum Future

Post-Quantum Cryptography: Securing the Internet Against Quantum Attacks In 2025, the race is on to rebuild our digital security before quantum computers can crack it. Modern encryption protocols like RSA and ECC – which protect everything from online banking to emails – could be rendered obsolete by a powerful quantum computer running Shor’s algorithm. Post-quantum cryptography (PQC) refers to new cryptographic algorithms designed to resist quantum attacks while still running on conventional computers csrc.nist.gov csrc.nist.gov. After a 7-year global competition, the U.S. National Institute of Standards and Technology (NIST) finalized its first PQC standards in August 2024 nist.gov. These include
11 September 2025
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Quantum Frenzy: Historic Breakthroughs & Bold Moves Unveiled in 48 Hours

Quantum Frenzy: Historic Breakthroughs & Bold Moves Unveiled in 48 Hours

Scientific Breakthroughs Spark a Quantum Leap Quantum Internet Node: In a breakthrough for quantum communication, researchers at the University of Innsbruck demonstrated a scalable quantum network node that connects trapped-ion qubits with photons sciencedaily.com. Using a string of calcium ions as qubits, the team moved each ion into an optical cavity and triggered it with a laser to emit a single entangled photon linked to that ion’s quantum state sciencedaily.com. By repeating this for ten ions, they generated a stream of entangled photons ready to carry quantum information to other nodes. The Innsbruck prototype achieved a high entanglement fidelity of
30 August 2025
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Quantum Tech Frenzy: IBM & AMD’s Bold Alliance, DARPA’s $24M Bet, and Breakthroughs from Genomics to Weather

Quantum Tech Frenzy: IBM & AMD’s Bold Alliance, DARPA’s $24M Bet, and Breakthroughs from Genomics to Weather

Key Facts IBM & AMD Unite for Quantum‑Centric Supercomputing IBM and AMD have entered a groundbreaking collaboration to merge quantum computing with classical high-performance computing (HPC) and AI systems. Announced on Aug. 26 and reverberating through the tech world by Aug. 27, the partnership establishes a roadmap for “quantum-centric” supercomputing architectures. IBM’s state-of-the-art quantum processors and software will be tightly integrated with AMD’s portfolio of HPC CPUs, GPUs, and adaptive FPGAs newsroom.ibm.com newsroom.ibm.com. The goal is to create hybrid systems where quantum co-processors tackle problems like molecular simulation, while classical AI supercomputers handle massive data analytics – working in tandem
28 August 2025
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Quantum Shockwaves & Mega Moves – The Ultimate Quantum Tech Roundup (Aug 25–26, 2025)

Quantum Shockwaves & Mega Moves – The Ultimate Quantum Tech Roundup (Aug 25–26, 2025)

Scientists used Google’s superconducting quantum processor to simulate gauge-theory particle interactions, illustrating how particles and the connecting strings behave, fluctuate, and even break, per remarks by Prof. Michael Knap of TUM. ICFO demonstrated a 10-qubit quantum RAM prototype—an array of ten memory cells that can store multiple qubits and retrieve them on demand, building on a prior record of 250 storage slots for photons. In Japan, Shibaura Institute, Waseda University, and Fujitsu presented a method to control a humanoid robot’s posture by encoding each robot link’s orientation as a qubit, achieving a 43% reduction in error on Fujitsu’s 64-qubit simulator
26 August 2025
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Quantum Leaps and Big Bets: Global Quantum Breakthroughs & Deals (Aug 24–25, 2025)

Quantum Leaps and Big Bets: Global Quantum Breakthroughs & Deals (Aug 24–25, 2025)

USC researchers demonstrated that a neglected quasiparticle dubbed ‘neglecton’ added to Ising anyons enables universal topological quantum computing, published in Nature Communications. University of Sydney researchers realized a universal logical gate set for GKP qubits encoded in a single trapped ytterbium ion, effectively encoding two logical qubits. Chalmers University (Sweden) and Aalto University (Finland) unveiled a magnetism-based quantum material that protects qubits from noise using ordinary magnetic interactions, reported in Physical Review Letters. Ben-Gurion University researchers used levitated nanodiamonds in a matter-wave interferometer to place million-atom diamonds in quantum superposition separated by nanometers. A Berlin team led by Jens Eisert
25 August 2025
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