Quantum computing and others quantum

Author(s): Kristin Kliemt, Jacintha Banda, Pavlo Khanenko, Ali Scherzad, Ulrike Stockert, Anna Efimenko, Kurt Kummer, Cornelius Krellner, and Manuel BrandoThe heavy-fermion system YbNi4P 2 is arguably the ferromagnetic (FM) metal with the lowest Curie temperature ( T c =0.17 K). It has been shown that replacing P with As tunes this system to a ferromagnetic quantum critical point (QCP) at x =0.1 As content. The authors here use the Czochralski method to grow high-quality single crystals of the series YbNi

Author(s): Cristian Voinea, Songyang Pu, Ajit C. Balram, and Zlatko PapićThe composite fermion Fermi liquid (CFL) state at half-filling of a Landau level is a paradigmatic example of a non-Fermi liquid. Here, the authors study the entanglement entropy of many CFL states and find an enhanced scaling of it with subsystem size compared to the noninteracting Fermi liquid. They also show that the charge fluctuations in a CFL are strongly suppressed and obey an area-law scaling with a universal corner contribution. These results serve as fingerprints of the non-Fermi-liquid correlations encoded in the CFL states. [Phys. Rev. B 111, 115119] Published Thu Mar 06, 2025

Author(s): Wei Liu, Stanislau U. Piatrusha, Lena Fürst, Lukas Lunczer, Tatiana Borzenko, Martin P. Stehno, and Laurens W. MolenkampFuture applications of semiconductor-superconductor heterostructures in quantum information science rely on careful engineering of proximity-induced quantum states. The authors apply here microwave admittance measurements to extract the current-phase relation and phase-dependent microwave dissipation in gated HgTe quantum well Josephson junctions. The experimental results are in good agreement with modeling of the Andreev bound state spectrum based on tight-binding simulations of the Bogoliubov–de Gennes equations. This allows to disentangle the effects of interface transparency, disorder, and magnitude of the superconducting energy gap. [Phys. Rev. B 111, 104503] Published Thu Mar 06, 2025

Author(s): Katherine WrightThe quantum properties of superconducting qubits might be improved by coating them with a noble metal such as gold. [Physics 18, s23] Published Thu Mar 06, 2025

New research by Curtin University has achieved a breakthrough in eco-friendly display technology, creating highly efficient and stable blue quantum dot LEDs (QLEDs) that could power the next generation of televisions, smartphones, VR headsets and energy-efficient lighting - without using toxic heavy metals.

Scientists encased nanodiamonds in tiny moving droplets of water to improve quantum sensing. The new technique lets researchers detect trace amounts of certain ions and molecules, and could someday find applications in environmental monitoring, medicine, bioengineering, and more.

Whether it's rivers cutting through earth, lava melting through rock, or water slicing through ice, channels all twist and bend in a seemingly similar back-and-forth manner. But a new study has discovered that channels carved by rivers actually have curves distinct to those cut by lava or ice.

Many physicists and engineers have recently been trying to demonstrate the potential of quantum computers for tackling some problems that are particularly demanding and are difficult to solve for classical computers. A task that has been found to be challenging for both quantum and classical computers is finding the ground state (i.e., lowest possible energy state) of systems with multiple interacting quantum particles, called quantum many-body systems.

The study of structural racism—the laws, policies, practices and norms that create unequal access to resources and opportunities, particularly in health care—has matured into a robust field since its founding in the 1990s. Researchers have moved beyond commentaries and opinion pieces to data-driven research that measures its real-world impact.

Rigetti Computing missed its Q4 estimates but equated its quantum computing progress with IBM and Google with a target of 100 qubits in 2025. read more

Scientists are tackling one of the biggest hurdles in quantum computing: errors caused by noise and interference. Their solution? A new chip called Ocelot that uses “cat qubits” — a special type of qubit that dramatically reduces errors. Traditional quantum systems require thousands of extra qubits for error correction, but this breakthrough could slash that [...]

In an era where sustainability and technological advancements go hand in hand, a recent breakthrough by researchers at Curtin University is touted to revolutionize display technology. This innovative research has led to the development of highly efficient and stable blue quantum dot LEDs (QLEDs) that promise not only to enhance the performance of devices like […]

Working at nanoscale dimensions, billionths of a meter in size, a team of scientists revealed a new way to measure high-speed fluctuations in magnetic materials. Knowledge obtained by these new measurements could be used to advance technologies ranging from traditional computing to the emerging field of quantum computing.

I’ve worked on topological quantum computation, one of Alexei Kitaev’s brilliant innovations, for around 15 years now.  It’s hard to find a more beautiful physics problem, combining spectacular quantum phenomena (non-Abelian anyons) with the promise of transformative technological advances (inherently … Continue reading →

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A new understanding of how an observer can change the disorder, or entropy, of a quantum object could help us probe how gravity interacts with the quantum realm

Author(s): Brian P. Williams and Nicholas A. PetersThe authors introduce a polarization agnostic encoding method for continuous-variable quantum key distribution. No active optical polarization control is required and only a single receiver polarization is monitored. These simplifications reduce loss and noise. [Phys. Rev. A 111, L030601] Published Wed Mar 05, 2025

Author(s): R. Jansen and S. YuasaDevices with ferromagnetic contacts exhibit magnetoresistance that is limited by the finite-contact spin polarization. Here, a quantum dot connected to source and drain reservoirs with s p i n a c c u m u l a t i

Whether it's rivers cutting through earth, lava melting through rock, or water slicing through ice, channels all twist and bend in a seemingly similar back-and-forth manner. But a new study led by scientists at The University of Texas at Austin has discovered that channels carved by rivers actually have curves distinct to those cut by lava or ice.

Quantum computers that can do things that classical computers can’t are still a few years away. But experts are warning that if encryption technology doesn’t adapt now to the quantum future, there could be serious security concerns for governments, businesses and ordinary people. Quantum concerns The words “quantum” and “encryption” normally appear in the same […]

In a new Physical Review Letters study, researchers propose an experimental approach that could finally determine whether gravity is fundamentally classical or quantum in nature.

Combine a garden-variety green laser, microwaves with roughly the energy of your wi-fi, and some diamond dust in drops of water, and what do you get? A precise chemical detection tool.

We recently published an article titled These 10 Stocks Defied Tuesday’s Bloodbath. In this article, we are going to take a look at where D-Wave Quantum Inc. (NYSE:QBTS) stands against the other stocks. The stock market fell further into negative territory on Tuesday as trade tensions between the US and its largest trading partners continued. The […]

Revolutionizing Chemical Detection: Quantum Sensors Powered by Nanodiamonds in Microdroplets In an era marked by rapid technological advancements and scientific breakthroughs, researchers have made significant strides in the field of quantum sensing, revealing innovative techniques that promise to enhance the detection of trace chemicals. A collaborative team of scientists, led by Ashok Ajoy, has developed […]

Schrödinger’s cat is scratching its head over the “topological” qubit that is causing a buzz in quantum computing. We should be, too

UC Santa Barbara researchers are working to move cold atom quantum experiments and applications from the laboratory tabletop to chip-based systems, opening new possibilities for sensing, precision timekeeping, quantum computing and fundamental science measurements.

AI has helped physicists discover a simpler way of achieving quantum entanglement. This finding could make it easier to develop quantum communication technologies.

After several dashed predictions, quantum computing is accelerating rapidly with actual use cases and scientific breakthroughs expected within years, not decades.

Chinese scholars published 160,852 semiconductor-related papers from 2018 to 2023, more than the next three ranked countries combined.

Sens. Diagn.DOI: 10.1039/D4SD00361F, Paper Open Access   This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Kawin Khachornsakkul, Darrien Johnsen, Sameer SonkusaleThe simple and low-cost contact-less headspace paper-based colorimetric device (hPAD) was established for improving the selective detection of ammonia levels in human samples.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry

London, UK (SPX) Mar 05, 2025 A groundbreaking study published in Physical Review D by Professor Ginestra Bianconi of Queen Mary University of London introduces a revolutionary approach to understanding gravity through quantum relative entropy. This innovative framework seeks to bridge the gap between quantum mechanics and Einstein's general relativity-two fundamental but historically incompatible theories in physics.

Ingrid Lunden / TechCrunch: London-based Quantexa, which develops anti-money laundering tech, raised a $175M Series F at a $2.6B valuation as it expands its AI data curation business  —  London startup Quantexa has made its name over the years with an enterprise platform that employs AI and data analytics to fight money laundering and fraud.

Anna Heim / TechCrunch: Netherlands-based QuantWare, which offers its VIO chip architecture to help solve scaling bottlenecks in quantum processors, raised a €20M Series A  —  Big Tech companies aren't sleeping on quantum chips: Amazon Web Services introduced Ocelot; Microsoft, Majorana; and Google, Willow.

The obscure world of quantum computing is emerging from the lab and into the public domain — fuelled by Big Tech’s recent progress in quantum processors. In the past few months alone, Google launched a chip called Willow, Microsoft unveiled Majorana, and this week, Amazon revealed Ocelot.  While tech giants are making great strides, these companies are still working in dozens of qubits — far from the numbers needed for a practical quantum computer. QuantWare, a startup from the Netherlands, could help them unlock millions more. QuantWare claims to have created a 3D chip architecture that offers the fastest route…This story continues at The Next Web

In recent advancements within the realm of quantum technology, researchers at the University of California, Santa Barbara, are pioneering a transformative approach to cold atom experiments, transitioning from conventional laboratory setups to integrated chip-based systems. This shift is poised to unveil groundbreaking applications in various fields such as precision timekeeping, advanced sensing technologies, quantum computing, […]

Although Navier–Stokes equations are the foundation of modern hydrodynamics, adapting them to quantum systems has so far been a major challenge. Researchers from the Faculty of Physics at the University of Warsaw, Maciej Łebek, M.Sc. and Miłosz Panfil, Ph.D., Prof., have shown that these equations can be generalized to quantum systems, specifically quantum liquids, in which the motion of particles is restricted to one dimension.

We can describe the quantum realm using straightforward mathematics – but once we try to translate these ideas into the real world, things get weird. Our quantum columnist Karmela Padavic-Callaghan explains why

PsiQuantum claims to have solved scalability issues that have long plagued photonic approaches. The post Quantum Computing Startup Says It’s Already Making Millions of Light-Powered Chips appeared first on SingularityHub.

In the quest for ultra-secure, long-range quantum communication, two major challenges stand in the way: the unpredictable nature of atmospheric turbulence and the limitations of current optical wavefront correction techniques. Researchers at the University of Ottawa, under the supervision of Professor Ebrahim Karimi, the director of Nexus for Quantum Technologies, in collaboration with the National Research Council Canada (NRC) and the Max Planck Institute for the Science of Light (Germany), have made significant advances in overcoming both obstacles.

Working at nanoscale dimensions, a team of scientists led by the Department of Energy's Oak Ridge National Laboratory revealed a new way to measure high-speed fluctuations in magnetic materials. Knowledge obtained by these new measurements, published in Nano Letters, could be used to advance technologies ranging from traditional computing to the emerging field of quantum computing.

Quantico breach suspect Hasan Yousef Hamdan, on terror watch list, re-arrested after base trespassing charges were dropped, according to a new report.

In a new study published in Physical Review D, Professor Ginestra Bianconi, Professor of Applied Mathematics at Queen Mary University of London, proposes a new framework that could revolutionize our understanding of gravity and its relationship with quantum mechanics.

Researchers discovered how Floquet Majorana fermions can improve quantum computing by controlling superconducting currents, potentially reducing errors and increasing stability. A new study has revealed significant insights into the behavior of electric current flow in superconductors, which could contribute to advancements in controlled quantum information processing. Co-authored by Babak Seradjeh, a Professor of Physics at [...]

Quantum-Si incorporated (NASDAQ:QSI) Q4 2024 Earnings Call Transcript March 3, 2025 Quantum-Si incorporated misses on earnings expectations. Reported EPS is $-0.23 EPS, expectations were $-0.18. Operator: Thank you for standing by, and welcome to Quantum-Si’s Fourth Quarter 2024 Earnings Conference Call. At this time, all participants are in listen-only mode. After the speakers’ presentation, there […]

Researchers at Microsoft say they have created so-called topological qubits, which would be exceptionally resistant to errors, but their claim has been met with scepticism

Physicists use mathematical assumptions in many situations that forbid time from moving backwards – but that isn’t necessarily a reflection of quantum reality

A research team from the University of Science and Technology of China (USTC) has devised a superconducting quantum computing prototype called Zuchongzhi-3. The prototype works on 105 qubits and 182 couplers with a speed that is 1015 times faster than the fastest supercomputer currently available. What’s more, it is one million times faster than the […] Continue reading New superconducting quantum processor outpaces world’s fastest supercomputer by quadrillions on Tech Explorist.

Vanishing atoms can ruin quantum calculations. Scientists have a new plan to locate leaks. Quantum computers face a major challenge: atoms, which serve as their qubits, can vanish without warning, corrupting calculations. Researchers have developed a groundbreaking method to detect this problem in neutral-atom quantum systems without disrupting their state. This discovery helps overcome a [...]

For decades, scientists have relied on electrodes and dyes to track the electrical activity of living cells. Now, engineers have discovered that quantum materials just a single atom thick can do the job with high speed and resolution -- using only light.

A multi-institutional research team has clarified the energy levels of color centers at the SiO2/SiC interface, paving the way toward the development of scalable quantum technologies that use them as single-photon emitters.

Author(s): Jian-Peng Dou, Feng Lu, Hao Tang, and Xian-Min JinUsing quantum memories, it is shown that nonlocality is also inherent in the hidden variable interpretation of quantum mechanics. [Phys. Rev. Lett. 134, 093601] Published Mon Mar 03, 2025

Author(s): Dongxin Gao et al.A new high-performance quantum processor boasts 105 superconducting qubits and rivals Google’s acclaimed Willow processor. [Phys. Rev. Lett. 134, 090601] Published Mon Mar 03, 2025

Author(s): David LindleyAharonov and Bohm proposed a scenario in which quantum particles experience electromagnetic effects even though there is no field in their immediate vicinity. [Physics 18, 48] Published Mon Mar 03, 2025

Author(s): Barry C. SandersA new high-performance quantum processor boasts 105 superconducting qubits and rivals Google’s acclaimed Willow processor. [Physics 18, 45] Published Mon Mar 03, 2025

For decades, scientists have relied on electrodes and dyes to track the electrical activity of living cells. Now, engineers at the University of California San Diego have discovered that quantum materials just a single atom thick can do the job—using only light.

For many years, scientific exploration has been constrained by traditional tools—particularly electrodes and fluorescent dyes—used to monitor the electrical activity of living cells. These conventional methods have served as the backbone of electrophysiology, offering precise measurements but often at considerable cost to tissue integrity and with limited scalability. However, a groundbreaking research initiative led by […]

From computer chips to image sensors in cameras, today's technology is overwhelmingly based on a semiconductor called silicon. This technology has been shrinking for decades—think of early room-sized computers compared to today's desktops—but physical limitations will soon prevent further improvement.

Zuchongzhi-3, a superconducting quantum computing prototype with 105 qubits and 182 couplers, has made significant advancements in random quantum circuit sampling. This prototype was successfully developed by a research team from the University of Science and Technology of China (USTC).

If you start with a two-dimensional ribbon and make it narrower and narrower, when does it stop being a ribbon and start being a one-dimensional line? Scientists from Utrecht University and the University of Twente made one-atom-thick ultrathin nanoribbons consisting of germanium atoms.

Light was long considered to be a wave, exhibiting the phenomenon of interference in which ripples like those in water waves are generated under specific interactions. Light also bends around corners, resulting in fringing effects, which is termed diffraction. The energy of light is associated with its intensity and is proportional to the square of the amplitude of the electric field, but in the photoelectric effect, the energy of emitted electrons is found to be proportional to the frequency of radiation.

American quantum computing startup PsiQuantum announced yesterday that it has cracked a significant puzzle on the road to making the technology useful: manufacturing quantum chips in useful quantities.

Higher beef-on-dairy pricing suggests opportunities for producers, feedlots and processors New data from the USDA Agricultural Marketing Service is beginning to shed light on the impact of beef and dairy crossbred cattle on the beef...

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Caltech engineers have made a breakthrough in quantum communication by successfully linking two quantum nodes with multiple qubits. Using a novel multiplexing technique, they drastically increased the data transmission rate, setting the stage for large-scale quantum networks. Laying the Groundwork for Quantum Networks Engineers at Caltech have taken a major step toward the future of [...]

Scientists have revealed how quantum interference and symmetry dictate molecular behavior in collisions with gold surfaces, offering new insights into molecular interactions. The findings can have important implications for chemistry and materials science.

A recent study from the University of Eastern Finland (UEF) examines how photons—the fundamental particles of light—behave when they encounter sudden changes in a material’s properties over time. This research reveals intriguing quantum optical effects that could advance quantum technology and help establish an emerging field known as four-dimensional quantum optics. Four-dimensional optics is a [...]

Microsoft’s Majorana 1 quantum chip introduces a breakthrough Topological Core, enabling stable and scalable qubits. By leveraging topoconductors, this innovation paves the way for million-qubit machines capable of solving complex scientific and industrial challenges. With DARPA’s backing and digital control advancements, Microsoft is bringing quantum computing from theory to reality. Breakthrough Quantum Chip: Majorana 1 [...]

Berlin, Germany (SPX) Mar 01, 2025 A groundbreaking study by researchers at the University of Eastern Finland (UEF) sheds light on the interaction of photons-the fundamental particles of light-as they traverse boundaries where material properties change abruptly over time. This research reveals fascinating quantum optical phenomena that could drive innovations in quantum technology and propel the emerging field of four-dimensiona

Quantum technology is no longer confined to the lab – it’s making its way into our everyday lives. Now, it’s about to transform something even more fundamental: how we navigate the world. Imagine submarines travelling beneath the ocean, never needing to surface for location updates. Planes flying across continents with unshakeable precision, unaffected by signal […]

Richard Waters / Financial Times: Despite breakthroughs from Amazon and Microsoft, quantum computing is far from its silicon moment, with no consensus on the best way to build practical qubits  —  Despite breakthroughs from Amazon and Microsoft, the industry is still a long way from building practical machines

Scientists demonstrate a new quantum chip architecture for suppressing errors using a type of qubit known as a cat qubit.

A peer reviewer questioned the premise of our study into the potential impact of abruptly ending PEPFAR funding. Then it happened.

Microsoft Quantum and Purdue University researchers have made a major leap in quantum computing, publishing a paper in Nature detailing how they successfully measured a key property of topological qubits. Their work pushes semiconductor-superconductor hybrid technology to new heights and strengthens Purdue’s role in quantum research. Microsoft Advances Topological Quantum Computing Microsoft Quantum recently published [...]

Author(s): Philip BallA new imaging technique can show the wave-like behavior of unconfined quantum particles. [Physics 18, 46] Published Fri Feb 28, 2025

Author(s): Léon Carde, Pierre Rouchon, Joachim Cohen, and Alexandru PetrescuEngineering nonlinear dissipation through parametric interactions is a key ingredient in autonomous quantum error correction. In “cat” qubits bit-flip errors may be exponentially suppressed using two-photon driven dissipation, but spurious dissipative channels appear, in a process that is poorly understood. The authors turn to high-order perturbation theory and exact numerical diagonalization to classify the possible decay mechanisms that reduce the coherence of such a qubit, bridging the gap between the microscopic parameters of the circuit and the lifetimes of the modes. Furthermore, engineering constraints on the surrounding apparatus are identified, to reduce decoherence. [Phys. Rev. Applied 23, 024073] Published Fri Feb 28, 2025

Following quantum chip breakthroughs by Microsoft and Google, AWS scientists explain the role transistors play in this first-generation cat qubit architecture.

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We recently compiled a list of the Why These 15 AI Stocks Are Plunging So Far in 2025. In this article, we are going to take a look at where D-Wave Quantum Inc. (NYSE:QBTS) stands against the other AI stocks. Investors have been turning sour on the AI industry. Many have expected AI stocks to […]

Amazon enters the quantum race with Ocelot, aiming to rival Google and Microsoft. The prototype chip could advance error correction and bring practical quantum computing closer.

A recent study has realized multipartite entanglement on an optical chip for the first time, constituting a significant advance for scalable quantum information. The paper, titled "Continuous-variable multipartite entanglement in an integrated microcomb," is published in Nature.

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Quantum Dot Light Emitting Diodes (QLEDs) have steadily emerged as front-runners in the realm of optoelectronic applications, especially in high-end display technology. A recent breakthrough from a collaboration between Soochow University and Macau University of Science and Technology has pushed the boundaries of this area even further. This advancement revolves around the development of tailored, […]

In a new study published in Physical Review Letters, scientists have discovered a novel approach to detecting the quantum properties of a system by simply using heat as a witness, requiring no direct measurement of the quantum system itself.

We recently published an article titled Jim Cramer Thoughts on 8 Stocks As He Discussed Market Froth. In this article, we are going to take a look at where D-Wave Quantum Inc. (NYSE:QBTS) stands against the other stocks. Jim Cramer, the host of Mad Money, discussed how “froth” is currently affecting the market, explaining that trend-driven […]

Quantum computers, which operate leveraging quantum mechanics effects, could soon outperform traditional computers in some advanced optimization and simulation tasks. Most quantum computing systems developed so far store and process information using qubits (quantum units of information that can exist in a superposition of two states).

PsiQuantum, the company which was awarded a billion-dollar contract by the Australian and Queensland governments to build what might be one of the world’s first quantum computers, has published detailed content about the science behind its proposal. The US-based company released results which it says show that it is ready to begin construction of the […]

Recent announcements of quantum hardware from big tech companies suggest the form of computing may solve real problems in the coming years.

Amazon announced Ocelot, its quantum computing chip that can reduce costs by up to 90%. Microsoft and Google also made advancements in quantum technology. read more

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The quantum rules shaping molecular collisions are now coming into focus, offering fresh insights for chemistry and materials science. When molecules collide with surfaces, a complex exchange of energy takes place between the molecule and the atoms composing the surface. But beneath this dizzying complexity, quantum mechanics, which celebrates its 100th anniversary this year, governs the process.

Sprinting after Microsoft and co, Amazon claims it too has a QC chip that's good at all-important error correction Amazon Web Services on Thursday announced Ocelot, a quantum computing chip based on "cat qubits."…

Amazon announced that it has created its own quantum computing chip, joining Microsoft and Google in a push to take this potentially transformative technology from the theoretical to the practical. Ocelot is a prototype that's intended to test the effectiveness of Amazon Web Services' quantum error correction architecture. Compared with other chip methods, the company claims Ocelot can reduce the cost of implementing quantum error correction by up to 90 percent. Quantum computing could solve complicated problems exponentially faster than standard computers by using quantum bits, or qubits, rather than traditional bits that store a computer's information as 1s and 0s. Rather than representing only a 1 or a 0, qubits can represent a proportion of both 1 and 0 at the same time. Ocelot takes this a step farther with its use of "cat qubits," named for the famous Schrödinger's cat thought experiment, which can "intrinsically suppress certain forms of errors," according to

Quantum Insights: Unraveling the Mysteries of Molecular Collisions through Quantum Interference In a groundbreaking study that seeks to clarify the complex dynamics of molecular collisions, researchers have made significant strides in understanding quantum interference, a phenomenon that has profound implications for both chemistry and materials science. As molecules collide with surfaces, a multitude of potential […]

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In a groundbreaking advancement in the realm of quantum computing, researchers at the AWS Center for Quantum Computing, located on the California Institute of Technology’s (Caltech) campus, have made significant strides in overcoming one of the most formidable obstacles in the development of practical quantum computers: error suppression. This monumental leap is crucial in addressing […]