Quantum computing and others quantum

The performance of quantum computers could cap out after around 1,000 qubits, according to a new analysis published in the Proceedings of the National Academy of Sciences. Through new calculations, Tim Palmer at the University of Oxford has reconsidered the mathematical foundations underlying the quantum principles behind the technology, concluding that restrictions on the information-carrying capacity of large quantum systems could make their computing power far more limited than many researchers predict.

We speak to Lucy Robson, a quantum algorithm scientist at Universal Quantum, about her work in helping to develop simulations for drug discovery

While upgrades have improved efficiency and lowered costs, the ecosystem faces deeper structural questions around fragmentation, security, and purpose, even as it continues prioritizing base-layer scaling.

Qilimanjaro is selling a relatively cheap kit with everything you need for a quantum computer – you just need to be able to put it together

This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. A $5 million prize awaits proof that quantum computers can solve health care problems  In a laboratory on the outskirts of Oxford, a quantum computer built from atoms and light awaits…

I’m standing in front of a quantum computer built out of atoms and light at the UK’s National Quantum Computing Centre on the outskirts of Oxford. On a laboratory table, a complex matrix of mirrors and lenses surrounds a Rubik’s Cube–size cell where 100 cesium atoms are suspended in grid formation by a carefully manipulated…

China is on track to produce national standards for post-quantum cryptography within three years, according to Wang Xiaoyun,

Australian researchers have reportedly created the world's first quantum battery prototype.

A new quantum system called giant superatoms could protect quantum information and enable entanglement between multiple qubits. The concept merges giant atoms and superatoms to improve stability and scalability for future quantum technologies. Scientists at Chalmers University of Technology in Sweden have introduced the theoretical framework for this new type of quantum system, built around [...]

Quantum computers could solve certain problems that would take traditional classical computers an impractically long time to solve. At the Japan Advanced Institute of Science and Technology (JAIST), researchers are now working to make these systems reliable and trustworthy.

Quantum communication systems are emerging solutions to transmit information between devices in a network leveraging quantum mechanical phenomena, such as entanglement. Entanglement is a quantum effect that entails a link between two or more particles that share a unified state even at a distance, so that measuring one instantly affects the other.

In the 1980s, Charles Bennett and Gilles Brassard created a new kind of encryption that would be impregnable.

In the 1980s, Charles Bennett and Gilles Brassard created a new kind of encryption that would be impregnable.

In the 1980s, Charles Bennett and Gilles Brassard created a new kind of encryption that would be impregnable.

Charles Bennett and Gilles Brassard were recognized for their foundational work in quantum information science. The post Quantum Cryptography Pioneers Win Turing Award first appeared on Quanta Magazine

In the 1980s, Charles Bennett and Gilles Brassard created a new kind of encryption that would be impregnable.

IBM’s quantum-centric supercomputing architecture integrates quantum processors with classical clusters to accelerate scientific discovery, although practical deployment remains largely experimental.

For the first time, researchers have demonstrated that the properties of the perovskite family of materials can be used to create so-called quantum bits. The findings, published in the journal Nature Communications, pave the way for more affordable materials in future quantum computers.

Mia Dawkins / Bloomberg: The UK plans to spend £1B+ on quantum computing research over four years, including funding companies in pharmaceuticals, financial services, and energy  —  The UK will spend more than £1 billion ($1.3 billion) on quantum computing research over the next four years …

The chancellor tells the BBC she wants the "pattern to end" while also pledging closer ties with the EU.

Author(s): Jie Zhou, Chuanlong Ma, Yifang Xu, Weizhou Cai, Hongwei Huang, Lida Sun, Guangming Xue, Ziyue Hua, Haifeng Yu, Weiting Wang, Chang-Ling Zou, and Luyan SunA hardware-efficient approach for generating and stabilizing entanglement applied to logical qubits protected by quantum error correction provides an experimental demonstration of entanglement pumping. [Phys. Rev. Lett. 136, 110801] Published Mon Mar 16, 2026

Fortinet Inc. (NASDAQ:FTNT) is one of the best AI stocks to invest in according to billionaires. On March 10, Fortinet launched FortiOS 8.0, a major update to its security operating system designed to integrate networking and security across hybrid and multi-cloud environments. Introduced at Fortinet Accelerate 2026, the new release focuses on governing the use […]

First successful demonstration of quantum teleportation between two different quantum dots. An international team of researchers that includes scientists from Paderborn University has achieved a major milestone toward building a future quantum internet. For the first time, the polarization state of a single photon produced by one quantum dot has been successfully transferred to another [...]

International Business Machines Corporation (NYSE:IBM) is one of the best get-rich-quick stocks to buy according to hedge funds. On March 12, IBM unveiled the industry’s first quantum-centric supercomputing reference architecture, providing a blueprint for integrating quantum processors/QPUs with traditional CPUs and GPUs. This new architecture creates a unified environment across on-premises systems and the cloud, […]

Although the potential applications of quantum computing are widespread, a new feasibility study suggests quantum computers still face major hurdles in solving quantum chemistry problems. The study, published in Physical Review B, evaluates what criteria are needed for a quantum advantage in searching for the ground state energy of molecules. The researchers attempt this feat using two different algorithms with differing strengths and weaknesses.

Author(s): Marric StephensApplying thermodynamic principles makes quantum machine-learning protocols more efficient. [Physics 19, s28] Published Thu Mar 12, 2026

The errors that quantum computers make are holding the technology back. But recent progress in quantum error correction has excited many researchers

Recently, my coworkers and I put out a preprint “Classical solution of the FeMo-cofactor model to chemical accuracy and its implications’’ (Zhai et al. 2026). It is a bit unusual to write commentary on one’s own scientific article. However, in this … Continue reading →

Rigetti Computing Inc. (NASDAQ:RGTI) is one of the 11 best computer hardware stocks to buy for the long term. On March 5, Kevin Garrigan from Jefferies decreased the firm’s price target on Rigetti Computing Inc. (NASDAQ:RGTI) to $20 from $30. The analyst maintains a Hold rating on the stock, which currently yields almost 18% upside […]

Two popular quantum computing algorithms for problems in chemistry may have very limited use even as quantum hardware improves

Today’s quantum computers are far from breaking Bitcoin’s cryptography and any real threat would likely emerge gradually, giving the network time to adapt.

Allosteric Bioscience said it is applying genomics, genetics, systems biology, quantum computing and advanced artificial intelligence to study the molecular mechanisms of aging and longevity, according to the company. The company states that its approach combines proprietary AI and molecular technologies with genomic and biological research tools to better understand and potentially control biological pathways […] The post Allosteric Bioscience targets longevity research using AI and quantum computing appeared first on Longevity.Technology.

A complex structure with multiple electrons is within reach of today's hardware.

When performing calculations in a quantum computer qubits are required. Qubits are the units that enable the computer

Using a tool to solve a protein's structure, for most researchers in the world of structural biology and computational chemistry, is not unlike using the Rosetta Stone to unlock the secrets of ancient Egyptian texts. Once a protein's structure has been discovered or defined, one can infer crucial information about its function or, in a diseased state, its dysfunction. While researchers have been pursuing the quest of solving protein structure for decades, advancing tools and computing technologies offer a new frontier for this work.

The pursuit of scalable quantum computing platforms has been fiercely challenged by the sheer complexity of the necessary control infrastructure. Traditional superconducting qubit architectures require an individually dedicated control line for each qubit—a reality that severely limits the scalability of quantum processors. This linear scaling of wiring not only increases the physical footprint but also […]

The US has unveiled a six pillar national cyber security strategy, with developing technological areas such as post-quantum cryptography and artificial intelligence from and centre.

When it comes to quantum computing, which is rapidly accelerating, the focus is always on qubits. These delicate

Chinese scientists have cracked a long-standing puzzle in quantum optics, creating a tiny device that spits out pairs of light particles on demand with unprecedented purity and efficiency that could upend the quantum race. Single-photon devices are maturing rapidly, but the field is now pursuing efficient two-photon sources that can pave the way for sharper medical imaging, unbreakable encryption and next-generation sensors. In precision measurement, for instance, using two photons can double...

Quantum technologies are anticipated to transform computing, communication and sensing by harnessing the unusual behavior of matter at

Whether you use a smartphone or a computer, pay for things with a credit card, or go to

In the frontier of condensed matter physics, quantum spin liquids have captivated researchers for decades, promising exotic phases of matter that defy classical descriptions and hold potential keys to quantum computation. However, recent groundbreaking research led by Professor Pengcheng Dai at Rice University challenges longstanding interpretations of one such purported quantum spin liquid material, cerium […]

An international team of scientists from IBM, The University of Manchester, Oxford University, ETH Zurich, EPFL and the University of Regensburg have created and characterized a molecule unlike any previously known—one whose electrons travel through its structure in a corkscrew-like pattern that fundamentally alters its chemical behavior. The work appears in Science.

Author(s): Ssu-Chih Lin, Paul Steinacker, MengKe Feng, Ajit Dash, Santiago Serrano, Wee Han Lim, Kohei M. Itoh, Fay E. Hudson, Tuomo Tanttu, Andre Saraiva, Arne Laucht, Andrew S. Dzurak, Hsi-Sheng Goan, and Chih Hwan Yang is a promising strategy for scaling silicon-based quantum processors by overcoming the connectivity constraints inherent in quantum dots. This study employs Pauli spin blockade to characterize spin-shuttling coherence at different external magnetic fields, facilitating a systematic investigation of the impact of various operational parameters, which can drive up to a twentyfold variation in error rates. Through targeted optimization, the authors achieve an average shuttling fidelity of 99.8%. Their findings provide critical insights for optimizing high-performance spin shuttling in future large-scale quantum processors. [Phys. Rev. Applied

Author(s): Tancredi Salamone, Biel Martinez Diaz, Jing Li, Lukas Cvitkovich, and Yann-Michel NiquetThe management of valley splittings is one of the main challenges for electron spin qubits in Si/SiGe heterostructures. Here, the authors implement intervalley potentials in a two-band k·p model for the opposite X, Y, and Z valleys of silicon, explicitly accounting for alloy disorder. The approach reproduces tight-binding valley splittings, valley-orbit mixing, and intervalley dipole matrix elements at a much lower computational cost. Through simulation of a realistic Si/SiGe spin qubit device, including electron-phonon interactions, the authors illustrate how this model enables efficient modeling of SiGe heterostructure devices where spin and valley physics are relevant. [Phys. Rev. B 113, 115304] Published Thu Mar 05, 2026

A team at IBM Research has assembled a strange new ring-shaped molecule that bends around like a more complicated Möbius strip

Leaders acknowledge White House role in controversial moves

Chemists have created a never-before-seen type of molecule with a nearly impossible shape.

Reuters: China's new five-year plan introduces an “AI+ action plan”, mentions AI over 50 times, and outlines investments in quantum computing, 6G, embodied AI, and more  —  China's new five-year policy blueprint laid out its ambitions to aggressively adopt artificial intelligence throughout …

Quantum computers work by applying quantum operations, such as quantum gates, to delicate quantum states. Ideally, quantum computers can solve complex equations at staggeringly fast speeds that vastly outpace regular computers. In real hardware, the operations of quantum computers often deviate from the ideal behavior because of device imperfections and unwanted noise from the environment. To build reliable quantum machines, researchers need a way to accurately determine what a quantum device is actually doing.

Google plans to defend HTTPS certificates against quantum attacks using compact verification methods that preserve browser performance and system compatibility.

Researchers at the University of Innsbruck, together with partners from Sydney and Waterloo, have presented a new diagnostic method for quantum computers. It makes errors in individual quantum bits visible during logical calculation and evaluates them. The new method was demonstrated on an ion trap quantum processor in Innsbruck. It can be used to identify critical error sources—a key to developing more robust, fault-tolerant quantum processors.

Quantum Computing, Inc. (NASDAQ:QUBT) Q4 2025 Earnings Call Transcript March 2, 2026 Quantum Computing, Inc. beats earnings expectations. Reported EPS is $-0.0072, expectations were $-0.04. Operator: Ladies and gentlemen, greetings, and welcome to the Quantum Computing Inc. Fourth Quarter 2025 Shareholder Update Call. [Operator Instructions] Please note this conference is being recorded. Following management’s remarks, […]

NbRe may be a long-sought triplet superconductor, offering zero-resistance spin transport and major advances in quantum computing. Physicists have searched for decades for materials known as triplet superconductors because of their potential to enable extremely energy-efficient technologies. These materials are widely regarded as one of the most important missing pieces in advanced solid-state physics. “A [...]

Quantum computing stands as a remarkable frontier in contemporary science, holding the promise to revolutionize how complex problems are solved. Central to this technology is the manipulation of quantum states through quantum operations—delicately crafted quantum gates that process information in a fundamentally different manner than classical computers. However, practical implementations of quantum hardware often face […]

A pioneering advancement is reshaping the landscape of low-power and quantum computing, anchored by a comprehensive technical roadmap for two-dimensional (2D) Indium Selenides (InSe). Spearheaded by Professor Seunguk Song and his team from Sungkyunkwan University’s Department of Energy Science, this groundbreaking research offers a visionary blueprint for exploiting InSe’s unique material properties to transcend the […]

In the realm of quantum physics, one of the most captivating yet perplexing truths lies in the intrinsic limitations on simultaneously measuring certain properties of a quantum system. Unlike classical physics, where measuring an attribute such as the speed or weight of an object leaves its other properties untouched, quantum measurements inevitably impact the state […]

A method for making quantum computers less error-prone could let them run complex programs such as simulations of materials more efficiently, thus making them more useful

With reliable access to a smartphone, individuals can resolve foundational questions — such as where they are and what time it is — with ease and an unmatched level of precision and accuracy. This can largely be attributed to global navigation satellite systems (GNSS), which are typically referred to as GPS (global positioning system[s]). Many readers will be familiar with GPS and perhaps even GNSS. Although GPS is a U.S. system, it is analogous to other global satellite systems, including Russia’s GLONASS, China’s BeiDou, and Europe’s Galileo. GNSS has become ubiquitous and is essentially free to the user, enabled by specialized and low-cost microchips smaller than a fingernail. GNSS provides both...

Quantum networks, which will enable the future quantum internet, aim to interconnect quantum nodes, which serve as quantum processors, quantum memories, or quantum sensors, enabling capabilities beyond today’s classical internet. By distributing quantum states between remote nodes, quantum networks support functions such as provably secure communication, distributed quantum computing, and distributed quantum sensing. Facilitating these sophisticated functions builds on the concepts outlined in early vision papers, which describe the quantum internet as a new layer of global information infrastructure that complements, rather than replaces, the classical internet1. The effects of quantum networks extend beyond secure...

The European Union’s ambitious industrial policy to challenge China has been gutted, removing AI, semiconductors and quantum computing from a list of strategic technologies that must be “made in Europe” to tap billions in government funds. Biotechnology and robotics are other cutting-edge sectors to be cut from the Industrial Accelerator Act (IAA) ahead of the proposal’s formal unveiling by the European Commission on Wednesday, a leaked draft showed. Plans to exclude non-EU-based producers from...

© seekingalpha.com. Use of this feed is limited to personal, non-commercial use and is governed by Seeking Alpha's Terms of Use (https://about.seekingalpha.com/terms). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

Here's a look inside the Q4 earnings report from Quantum Computing. Importance Rank:  1 read more

To understand why this matters, it helps to know how current web security actually works. When you visit a website, your browser checks a digital certificate to confirm you're actually talking to the real site and not some imposter. Those certificates are secured using complex math problems that regular computers...Read Entire Article

Scientists have pulled off a feat long considered out of reach: getting light to mimic the famous quantum Hall effect. In their experiment, photons drift sideways in perfectly defined, quantized steps—just like electrons do in powerful magnetic fields. Because these steps depend only on nature’s fundamental constants, they could become a new gold standard for ultra-precise measurements. The discovery also hints at tougher, more reliable quantum photonic technologies.

Physicist Paul Davies looks back at the past century of quantum mechanics—the most disruptive theory in the history of modern science.

A new ultra-fast monitoring system reveals that quantum computer qubits can change from stable to unstable in mere milliseconds. Researchers at the Niels Bohr Institute have dramatically increased how quickly changes in delicate quantum states can be detected inside a qubit. By combining commercially available hardware with new measurement strategies, they can now observe rapid [...]

Quantum technologies, computers or other devices that operate leveraging quantum mechanical effects, rely on the precise control of light and matter. Over the past decades, quantum physicists and material scientists have been trying to identify systems that can reliably generate photons (i.e., light particles) and could thus be used to create quantum technologies.

Merkle Tree Certificate support is already in Chrome. Soon, it will be everywhere.

In a groundbreaking advance set to reshape the landscape of quantum communication, researchers have unveiled a microwave quantum network resilient to thermal noise, operating effectively at temperatures as high as 4 kelvin. This breakthrough challenges longstanding assumptions about the fragility of quantum signals in noisy thermal environments, dramatically expanding the robustness and practicality of quantum […]

Lockheed Martin and photonic quantum computing company Xanadu have established a research initiative to advance the foundational theory and emerging applications of Quantum Machine Learning (QML). The research will focus on generative models, machine learning techniques that learn from data to create new, realistic representations. Generative models underpin much of today's progress in AI, for example in large language models, but these are data-hungry energy-intensive techniques that struggle in applications where data is scarce. The newly launched collaboration will explore how quantum computers can exploit Fourier-based operations that are fundamentally inaccessible to classical machine learning methods, opening up new potential...

Superconducting computing circuits were briefly heralded as the future of computing in the 1980s. Columnist Karmela Padavic-Callaghan visits a quantum chip foundry where one company is betting this technology’s second act will revolutionise quantum computers

Author(s): Sophia ChenA group of physicists are developing a quantum computer that’s entirely open source, from hardware to software [Physics 19, 24] Published Thu Feb 26, 2026

A team in China has demonstrated the simultaneous teleportation of multiple sideband qumodes in a continuous-variable system, overcoming a longstanding technical barrier. Quantum teleportation is one of the key tricks behind entanglement-based quantum communication. It does not move matter from place to place. Instead, it transfers the information that defines a quantum state from one [...]

QTUM topped $3.5B before IonQ's Romania launch, underscoring rising conviction in quantum security. Importance Rank:  1 read more

Leaders acknowledge White House role in controversial moves

This move comes shortly after the Ethereum Foundation established a dedicated post-quantum research team to study the issue.

Mechanism could pave the way for more robust quantum computation, but questions remain over scalability The post Read-out of Majorana qubits reveals their hidden nature appeared first on Physics World.

Researchers identified a new silicon qubit that emits telecom-band light without fragile hydrogen, potentially enabling scalable quantum devices using existing chip technology.

Quantum technologies are anticipated to transform computing, communication, and sensing by harnessing the unusual behavior of matter at the atomic scale. Translating quantum's promise into practical devices will require physical systems that have desirable quantum properties and can be easily manufactured. Silicon, the material behind today's computer chips, is highly attractive as a platform because it plays to the strengths of the trillion-dollar semiconductor industry that has already been built. Identifying quantum building blocks—qubits—in silicon is, therefore, an important frontier research area.

Quantum computers need special materials called topological superconductors—but they’ve been notoriously difficult to create. Researchers have now shown they can trigger this exotic state by subtly adjusting the mix of tellurium and selenium in ultra-thin films. That tiny chemical tweak changes how electrons interact, effectively turning a quantum phase “dial” until the ideal state appears. The result is a more practical path toward building stable, next-generation quantum devices.

The commonly used RSA encryption algorithm can now be cracked by a quantum computer with only 100,000 qubits, but the technical challenges to building such a machine remain numerous

In a significant boost for the quantum computing pioneer, IonQ (IONQ) was just selected to support the Missile Defense Agency’s (MDA) Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) indefinite-delivery/indefinite-quantity (IDIQ) contract. The massive vehicle carries a $151 billion ceiling and positions IonQ among roughly 2,400 awardees eligible to compete for task orders. With the broader […] The post IonQ's Quantum Defense Breakthrough: Can a $151B SHIELD Win Ignite a Surge? appeared first on Money Morning - We Make Investing Profitable.

By analysing the Liouville gap in imaginary time, scientists reveal universal phase‑transition behaviour in both ground and finite‑temperature states The post A breakthrough in modelling open quantum matter appeared first on Physics World.

A new study has revealed how tiny imperfections and vibrations inside a promising quantum material could be used to control an unusual quantum effect, opening new possibilities for smaller, faster, and more efficient energy-harvesting devices.

Researchers at the University of Tuebingen, working with an international team, have developed an artificial intelligence that designs entirely new, sometimes unusual, experiments in quantum physics and presents them in a way that is easily understandable for researchers. This includes experimental setups that humans might never have considered. The new AI doesn't just create a single design proposal; instead, it writes computer code that generates a whole series of physical experiments, that is, groups of experiments with similar outputs. The study has been published in the journal Nature Machine Intelligence.

A new study has revealed how tiny imperfections and vibrations inside a promising quantum material could be used to control an unusual quantum effect, opening new possibilities for smaller, faster and more efficient energy-harvesting devices.

A new study has revealed how tiny imperfections and vibrations inside a promising quantum material could be used to control an unusual quantum effect, opening new possibilities for smaller, faster and more efficient energy-harvesting devices.

Researchers once struggled to understand unconventional solutions developed by artificial intelligence. A new approach leads to faster and better understanding.

In a groundbreaking advance in the realm of quantum communication, researchers led by Professor Xiaolong Su at Shanxi University in China have successfully demonstrated a controllable and deterministic continuous-variable quantum teleportation protocol capable of simultaneously transferring multiple sideband qumodes. This pioneering work shatters existing limitations that confined continuous-variable quantum teleportation to a single sideband mode […]

Author(s): Jyesta M. Adhidewata and Joel E. MooreRecent advances in scanning tunneling microscopy (STM) have allowed the experimental observation of fractional quantum Hall effect (FQHE) excited states in 2D materials. Here, the authors expand the thin torus limit using perturbation theory to include two-electron dipole-conserving hopping terms that appear as the torus increases in size. This framework allows analytical calculation of FQHE excited states, which shows good agreement with previous results while also elucidating the importance of dipole conservation in creating the observed sharp STM conductance peaks. [Phys. Rev. B 113, 075143] Published Mon Feb 23, 2026

Yazhou Sun / Bloomberg: Finnish quantum computing company IQM plans to go public via a SPAC merger with New Jersey-based Real Asset Acquisition in a deal set to value it at $1.8B  —  IQM Quantum Computers will go public through a merger with a blank-check vehicle in a deal expected to value the Finnish quantum computing firm …

The collaboration of TU Wien with research groups in China has resulted in a crucial building block for a new kind of quantum computer: The realization of a novel type of quantum logic gate makes it possible to carry out quantum computations on pairs of photons that are each in four different quantum states, or combinations thereof. The advancement is an important milestone for optical quantum computers. The study has now been published in Nature Photonics.

© seekingalpha.com. Use of this feed is limited to personal, non-commercial use and is governed by Seeking Alpha's Terms of Use (https://about.seekingalpha.com/terms). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.