Quantum Computing
- A cryogenic on-chip microwave pulse generator for large-scale superconducting quantum computing - Nature Communicationswww.nature.com A cryogenic on-chip microwave pulse generator for large-scale superconducting quantum computing - Nature Communications
Integrating a control interface with a quantum processor as the number of qubits scales is a significant challenge. Here the authors report a cryogenic on-chip microwave pulse generator for superconducting qubits with high degree of controllability, negligible heat load, and a small footprint.
- What You Shouldn't Know About Quantum Computers
This is an ebook about quantum computing made for a general audience. The ebook was made freely available via arXiv by the author Chris Ferrie, who is known for writing science books for children such as the popular Quantum Physics for Babies.
- On-Chip Quantum Information Processing with Distinguishable Photonsjournals.aps.org On-Chip Quantum Information Processing with Distinguishable Photons
Multiphoton interference is at the heart of photonic quantum technologies. Arrays of integrated cavities can support bright sources of single photons with high purity and small footprint, but the inevitable spectral distinguishability between photons generated from nonidentical cavities is an obstac...
- High-fidelity spin qubit operation and algorithmic initialization above 1 K - Naturewww.nature.com High-fidelity spin qubit operation and algorithmic initialization above 1 K - Nature
Initialization and operation of spin qubits in silicon above 1 K reach fidelities sufficient for fault-tolerant operations at these temperatures.
- New method uses classical computers to check accuracy of complex quantum systemstechxplore.com New method uses classical computers to check accuracy of complex quantum systems
Quantum computers of the future may ultimately outperform their classical counterparts to solve intractable problems in computer science, medicine, business, chemistry, physics, and other fields. But the machines are not there yet: They are riddled with inherent errors, which researchers are activel...
- Elegant use of noise for quantum computingphys.org Elegant use of noise for quantum computing
Scientists around the world work hard to rinse quantum systems for noise, which may disturb the function of tomorrow's powerful quantum computers. Researchers from the Niels Bohr Institute (NBI) have found a way to use noise to process quantum information. This raises the performance of the quantum ...
- A new phase of matter: Physicists achieve first demonstration of non-Abelian anyons in a quantum processorphys.org A new phase of matter: Physicists achieve first demonstration of non-Abelian anyons in a quantum processor
Our physical, 3D world consists of just two types of particles: bosons, which include light and the famous Higgs boson; and fermions—the protons, neutrons, and electrons that comprise all the "stuff," present company included.
- Saturday Morning Breakfast Cereal - The Quantum Talkwww.smbc-comics.com Saturday Morning Breakfast Cereal - The Talk
Saturday Morning Breakfast Cereal - The Talk
- Coherence time of 20 s with a single cesium atom in an optical dipole trap
PDF link: https://arxiv.org/pdf/2312.11196.pdf
- The future is quantum: universities look to train engineers for an emerging industrywww.nature.com The future is quantum: universities look to train engineers for an emerging industry
With quantum technologies heading for the mainstream, undergraduate courses are preparing the workforce of the future.
- Researchers demonstrate new 3D printing technique for quantum sensorsengineering.berkeley.edu Researchers demonstrate new 3D printing technique for quantum sensors - Berkeley Engineering
Innovation may lead to novel applications in precision measurement, biological imaging and environmental monitoring
- Mathematician warns US spies may be weakening next-gen encryptionwww.newscientist.com Mathematician warns US spies may be weakening next-gen encryption
Quantum computers may soon be able to crack encryption methods in use today, so plans are already under way to replace them with new, secure algorithms. Now it seems the US National Security Agency may be undermining that process
- IBM Quantum geoblocks its Open Plan Accessquantum-computing.ibm.com End User Agreement - IBM Quantum
Program real quantum systems with the leading quantum cloud application.
IBM has an API that allows users to use some of their quantum computers free of charge (the "Open Plan"). This plan gives one access to small quantum computers with up to 7 physical qubits.
I have just received an e-mail informing us that their user agreement has been updated such that it no longer allows users from certain countries to access their Open Plan:
> As a result of these changes, the Open Plan will no longer be available to users located in or ordinarily resident in Afghanistan, Armenia, Azerbaijan, Bahrain, Belarus, Myanmar (Burma), Cambodia, People's Republic of China (including Hong Kong), Cuba, Egypt, Georgia, Iran, Iraq, Jordan, Kazakhstan, North Korea, Kuwait, Kyrgyzstan, Laos, Lebanon, Libya, Macau, Moldova, Mongolia, Oman, Pakistan, Qatar, Russia, Sudan, Syria, Tajikistan, Turkmenistan, Ukraine, Uzbekistan, Venezuela, Vietnam, and Yemen.
The Open Plan is specifically designed for "Educators, new learners, and developers who do not need to execute larger workloads.". This isn't an API powerful enough to theoretically allow an adversary to break encryption or perform another meaningful attack using these quantum computers. I think this is only going to block out these countries from experimenting with these tools in an educational setting.
- How splitting sound might lead to a new kind of quantum computertheconversation.com How splitting sound might lead to a new kind of quantum computer
Scientists show they can create quantum superpositions of sound particles, pointing to the potential for mechanical quantum computers.
- Fluxonium Qubit Retains Information For 1.43 Milliseconds – 10x Longer Than Beforewww.sciencealert.com Fluxonium Qubit Retains Information For 1.43 Milliseconds – 10x Longer Than Before
Superconducting quantum technology has long promised to bridge the divide between existing electronic devices and the delicate quantum landscape beyond.
- Google’s quantum computer instantly makes calculations that take rivals 47 yearswww.smh.com.au Google’s quantum computer instantly makes calculations that take rivals 47 years
The CEO of a Cambridge-based quantum company declared: “Squabbling about whether we had reached, or indeed could reach, quantum supremacy is now resolved.”
- Scientists edge toward scalable quantum simulations on a photonic chip: A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomenawww.sciencedaily.com Scientists edge toward scalable quantum simulations on a photonic chip
A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomena.
- Quantum repeater transmits entanglement over 50 kilometres – Physics Worldphysicsworld.com Quantum repeater transmits entanglement over 50 kilometres – Physics World
Experiment incorporates all the essential building blocks of a long-distance quantum network
Of interest?
- Physicists Use Quantum Mechanics to Pull Energy out of Nothing | Quanta Magazinewww.quantamagazine.org Physicists Use Quantum Mechanics to Pull Energy out of Nothing | Quanta Magazine
The quantum energy teleportation protocol was proposed in 2008 and largely ignored. Now two independent experiments have shown that it works.
- Maybe We Could Use the Wikipedia Visualization of the Qubit as the Community Icon
I just thought that maybe this community should have an icon since there's such an easily available one.
- Quantum sensors: Measuring even more preciselywww.sciencedaily.com Quantum sensors: Measuring even more precisely
Two teams of physicists have designed the first programmable quantum sensor, and tested it in the laboratory. To do so they applied techniques from quantum information processing to a measurement problem. The innovative method promises quantum sensors whose precision reaches close to the limit set b...
