Quantum Computing Developments

India just crossed a major milestone in the race for quantum-secure communication — and it's not science fiction anymore. DRDO & IIT Delhi have successfully demonstrated Quantum Entanglement-Based Free-Space Secure Communication — over 1 km using an optical link on campus. Here’s why these matters: 1) Entangled photons were used to create secure cryptographic keys 2) No optical fiber needed — it worked over free space. 3) Achieved ~240 bits/sec secure key rate. 4) Quantum Bit Error Rate was below 7%. So, what’s the big deal? 1) It proves that we can build secure communication systems without needing underground cables — perfect for difficult terrains, defense zones, or remote areas. 2) Even if someone tries to intercept the message, the quantum state changes — making the intrusion detectable. 3) It’s another step toward building the Quantum Internet in India. The work was led by Prof. Bhaskar Kanseri’s team at IIT Delhi and supported by DRDO under its “Centres of Excellence” initiative. #QuantumComputing #QuantumCommunication #DRDO #IITDelhi #QuantumIndia #QuantumSecurity #Photonics #Research #QuantumInternet

Quantum Teleportation Achieved Over Internet for the First Time Researchers in the U.S. have successfully teleported a quantum state of light through over 30 kilometers (18 miles) of fiber optic cable while coexisting with regular internet traffic. This achievement marks a monumental step toward integrating quantum communication systems into existing telecommunications infrastructure, paving the way for future quantum internet networks. Key Highlights: • Teleportation Explained: Quantum teleportation involves transferring the quantum state of one particle to another distant particle, effectively replicating its state without physically moving the particle itself. • Overcoming Challenges: The experiment succeeded despite the interference from traditional internet data flowing through the same cables, showcasing an unprecedented level of stability and accuracy in a real-world environment. • Infrastructure Integration: The ability to teleport quantum states using existing fiber optic networks suggests that quantum and classical communication systems can share infrastructure, greatly reducing costs and accelerating deployment timelines. Why This Matters: • Quantum Internet Potential: Quantum networks promise ultra-secure encryption, seamless quantum computer connections, and advanced distributed sensing systems. • Real-World Feasibility: Demonstrating quantum teleportation in active fiber optic networks proves the technology can be scaled and deployed in real-world conditions. • Data Security: Quantum encryption methods, leveraging principles such as quantum key distribution (QKD), could make communications virtually unhackable. Researcher Insights: “This is incredibly exciting because nobody thought it was possible,” said Prem Kumar, a computing engineer at Northwestern University who led the study. “Our work shows a path towards next-generation quantum and classical networks sharing a unified fiber optic infrastructure. Basically, it opens the door to pushing quantum communications to the next level.” Implications for the Future: • Secure Communications: Enhanced encryption and ultra-secure networks could revolutionize cybersecurity. • Quantum Cloud Computing: Seamless connectivity between quantum computers across long distances could unlock unprecedented computational capabilities. • Scalable Deployment: Utilizing existing infrastructure minimizes costs and accelerates integration into global communication networks. While we’re still far from the Star Trek-style teleportation of physical objects, this achievement represents a profound advancement in quantum network engineering, bringing the vision of a global quantum internet significantly closer to reality.

Breakthrough for the #quantum internet: For the first time a major telco provider has successfully conducted entangled photon experiments - on its own infrastructure. ➡️ 30 kilometers, 17 days, 99 per cent fidelity. Our teams at T-Labs have successfully transmitted entangled photons over a fiber-optic network. Over a distance comparable to travelling from Berlin to Potsdam. The system automatically compensated for changing environmental conditions in the network.   Together with our partner Qunnect we have demonstrated that quantum entanglement works reliably. The goal: a quantum internet that supports applications beyond secure point-to-point networks. Therefore, it is necessary to distribute the types of entangled photons. The so-called qubits, that are used for #QuantumComputing, sensors or memory. Polarization qubits, like the ones used for this test, are highly compatible with many quantum devices. But: they are difficult to stabilize in fibers.   From the lab to the streets of Berlin: This success is a decisive step towards the quantum internet. 🔬 It shows how existing telecommunications infrastructure can support the quantum technologies of tomorrow. This opens the door to new forms of communication.   Why does this matter for people and society?   🗨️ Improved communications: The quantum internet promises faster and more efficient long-distance communications. 🔐 Maximum security: Entanglement can be used in quantum key distribution protocols. Enabling ultra-secure communication links for enterprises and government institutions 💡Technological advancement: high-precision time synchronization for satellite networks and highly accurate sensing in industrial IoT environments will need entanglement.   Developing quantum technologies isn’t just a technical challenge. A #humancentered approach asks how these systems can be built to serve real needs and be part of everyday infrastructure. With 2025 designated as the International Year of Quantum Science and Technology, now is the time to move from research to readiness. Matheus Sena, Marc Geitz, Riccardo Pascotto, Dr. Oliver Holschke, Abdu Mudesir

Thought you knew which #quantumcomputers were best for #quantum optimization? The latest results from Q-CTRL have reset expectations for what is possible on today's gate-model machines. Q-CTRL today announced newly published results that demonstrate a boost of more than 4X in the size of an optimization problem that can be accurately solved, and show for the first time that a utility-scale IBM quantum computer can outperform competitive annealer and trapped ion technologies. Full, correct solutions at 120+ qubit scale for classically nontrivial optimizations! Quantum optimization is one of the most promising quantum computing applications with the potential to deliver major enhancements to critical problems in transport, logistics, machine learning, and financial fraud detection. McKinsey suggests that quantum applications in logistics alone are worth over $200-500B/y by 2035 – if the quantum sector can successfully solve them. Previous third-party benchmark quantum optimization experiments have indicated that, despite their promise, gate-based quantum computers have struggled to live up to their potential because of hardware errors. In previous tests of optimization algorithms, the outputs of the gate-based quantum computers were little different than random outputs or provided modest benefits under limited circumstances. As a result, an alternative architecture known as a quantum annealer was believed – and shown in experiments – to be the preferred choice for exploring industrially relevant optimization problems. Today’s quantum computers were thought to be far away from being able to solve quantum optimization problems that matter to industry. Q-CTRL’s recent results upend this broadly accepted industry narrative by addressing the error challenge. Our methods combine innovations in the problem’s hardware execution with the company’s performance-management infrastructure software run on IBM’s utility-scale quantum computers. This combination delivered improved performance previously limited by errors with no changes to the hardware. Direct tests showed that using Q-CTRL’s novel technology, a quantum optimization problem run on a 127-qubit IBM quantum computer was up to 1,500 times more likely than an annealer to return the correct result, and over 9 times more likely to achieve the correct result than previously published work using trapped ions These results enable quantum optimization algorithms to more consistently find the correct solution to a range of challenging optimization problems at larger scales than ever before. Check out the technical manuscript! https://lnkd.in/gRYAFsRt

Quantum computing is no longer speculative—it’s becoming an investment priority. In 2023, European quantum startups outpaced North America, raising $781 million (three times the $240 million raised in the US). Globally, quantum startups raised $2.2 billion, a massive jump from $522 million in 2019. This isn’t happening in a vacuum. Governments are fueling the momentum. The UK has committed $4.3 billion to quantum technologies, while Germany has pledged $3.7 billion. At the same time, VC interest is holding steady, even as funding dries up in other tech sectors.   Quantum technology will have a wide-reaching impact, from cybersecurity and financial modeling to drug discovery and materials science. Pharma will likely see the earliest impact (drug development and molecular simulations using quantum).   In 2022, Finnish startup Algorithmiq raised $4 million for quantum-powered drug discovery, while Paris-based Qubit Pharmaceuticals secured $17 million for molecular simulations. Another European company, Terra Quantum AG, based in Switzerland, raised $75 million to scale its quantum-as-a-service model, which has direct applications in pharma and beyond.   Big Tech is also all-in. Google, IBM, Intel Corporation, and NVIDIA are pouring resources into quantum hardware and software. Meanwhile, publicly traded quantum companies have seen their stocks surge, signaling growing institutional confidence.   At APEX Ventures, we invest in revolutionary quantum startups. We are partnered with kiutra, enabling the second quantum revolution with easy-to-use and sustainable cryogenics, and planqc, building quantum computers that store information in individual atoms.   For founders and investors, the question isn’t whether quantum will matter—it’s when. The trajectory is clear: capital is flowing, enterprise adoption is accelerating, and governments are fully committed. If AI dominated the last decade, quantum may own the next.   #Venturecapital #AI #Deeptech #Startups  Follow us at APEX Ventures and subscribe to our newsletter for exclusive content on groundbreaking Deep Tech startups:   🔗 https://t2m.io/EV2qHQuo

EeroQ researchers published new findings in Physical Review X about controlling individual electrons at temperatures above 1 Kelvin. Here's what they accomplished: Current quantum computers operate near 10 millikelvin. EeroQ demonstrated electron control at temperatures 100 times higher. Their approach uses electrons floating on superfluid helium, integrated with standard superconducting circuits. Why this matters for quantum computing: → Reduces extreme cooling requirements   → Uses existing quantum hardware infrastructure   → Creates a cleaner environment for qubit operations   → May help with scaling challenges Johannes Pollanen, EeroQ's cofounder, noted this "reduces a key barrier to scalable quantum computing." The company has been developing this electron-on-helium technology since 2017. The work validates theoretical predictions about using helium as a platform for quantum operations. The research addresses a practical problem: current quantum systems require expensive, complex cooling to near absolute zero temperatures. For those working in quantum computing: What cooling challenges do you face in your systems? ♻️ Repost to help people in your network. And follow me for more posts like this.

Is this the "Attention Is All You Need" moment for Quantum Computing? Oxford University scientists in Nature have demonstrated the first working example of a distributed quantum computing (DQC) architecture. It consists of two modules, two meters apart, which "act as a single, fully connected universal quantum processor." This architecture "provides a scalable approach to fault-tolerant quantum computing". Like how the famous "Attention Is All You Need" paper from Google scientists introduced the Transformer architecture as an alternative to classical neural networks, this paper introduces Quantum gate teleportation (QGT) as an alternative to the direct transfer of quantum information across quantum channels. The benefit? Lossless communication. But not only communication: computation also. This is the first execution of a distributed quantum algorithm (Grover’s search algorithm) comprising several non-local two-qubit gates. The paper contains many pointers to the future, which I am sure will be pored over by other labs, startups and VCs. I am excited to follow developments in: - Quantum repeaters to increase the distance between modules - Removal of channel noise through entanglement purification - Scaling up the number of qubits in the architecture Amid all the AI developments, this may be the most important innovation happening in computing now. https://lnkd.in/e8qwh9zp

The Schrödinger Equation Gets Practical: Quantum Algorithm Speeds Up Real-World Simulations Quantum computing has taken a major leap forward with a new algorithm designed to simulate coupled harmonic oscillators, systems that model everything from molecular vibrations to bridges and neural networks. By reformulating the dynamics of these oscillators into the Schrödinger equation and applying Hamiltonian simulation methods, researchers have shown that complex physical systems can be simulated exponentially faster on a quantum computer than with traditional algorithms. This breakthrough demonstrates not only a practical use of the Schrödinger equation but also the deep connection between quantum dynamics and classical mechanics. The study introduces two powerful quantum algorithms that reduce the required resources to only about log(N) qubits for N oscillators, compared to the massive computational demands of classical methods. This exponential speedup could transform fields such as engineering, chemistry, neuroscience, and material science, where coupled oscillators serve as the backbone of real-world modeling. By bridging theory and application, this research underscores how quantum computing is redefining problem-solving in physics and beyond. With proven exponential advantages and the ability to simulate systems once thought computationally impossible, this quantum algorithm marks a milestone in quantum simulation, Hamiltonian dynamics, and real-world physics applications. The findings point toward a future where quantum computers can accelerate scientific discovery, optimize engineering designs, and even open new frontiers in AI and computational neuroscience. #QuantumComputing #SchrodingerEquation #HamiltonianSimulation #QuantumAlgorithm #CoupledOscillators #QuantumPhysics #ComputationalScience #Neuroscience #Chemistry #Engineering

What if spacetime doesn’t just host events but remembers them? In work now featured in New Scientist, we explore a radical idea: that spacetime is not smooth and passive but composed of discrete quantum cells that store information from everything that happens, much like memory units woven into the fabric of the cosmos. We refer to this framework as the Quantum Memory Matrix (QMM). It offers new tools for solving deep problems in physics: 🕳️ A resolution to the black hole information paradox 🌌 A unified, informational foundation for all four fundamental forces 🧲 A new view of dark matter as a gravitational effect of stored information 💻 And an unexpected leap in quantum error correction on real hardware Instead of adding new particles or rewriting physics, QMM reorganizes what we already know, including quantum mechanics, gauge theory, and relativity, into a structure where information itself shapes reality. The New Scientist story captures this journey from machine learning and cosmology to black holes and quantum computers. I’m deeply honored that they chose to spotlight this work. 🔗 https://lnkd.in/gdjF-Y6z (paywall; open-access summary coming soon) This research is part of a broader exploration of information as the operating system of the universe. Other recently peer-reviewed and published pieces include: 🌌 Geometry-Information Duality (Annals of Physics) 🧠 Information and Gravity: Reversible Imprinting (Entropy) 🌍 Information and the Strong/Weak Interactions (Entropy) Together, these works suggest something profound: Information may not merely describe the universe. It may be what the universe is made of. Thank you to everyone who has contributed to this journey. I'm especially grateful to Eike Marx, Valerii Vinokur, Reuben Brasher, Jeff Titus, and the team at New Scientist for bringing this story to light. #QuantumMemoryMatrix #QMM #QuantumGravity #BlackHoles #QuantumComputing #DarkMatter #FundamentalPhysics #NewScientist #InformationIsPhysical #SciPhi Terra Quantum AG, Markus Pflitsch, Leiden University