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Archive for the ‘quantum physics’ category: Page 164

Jan 5, 2024

South Dakota Proposes Center for Quantum Information Science & Technology

Posted by in categories: computing, quantum physics, science, security

Governor Kristi Noem has proposed a $6 million investment in a new Center for Quantum Information Science & Technology (C-QIST) in her recommended budget for the upcoming fiscal year.

According to details from the proposed budget, the center, a collaborative effort between Dakota State University, South Dakota School of Mines & Technology, South Dakota State University, and the University of South Dakota, aims to position the state as a leader in this emerging field with the potential to revolutionize everything from national security to healthcare.

The governor mentioned the potential of quantum computers to solve intractable problems as a reason for pursuing a quantum computing center, according to South Dakota Searchlight.

Jan 5, 2024

Robustly learning the Hamiltonian dynamics of a superconducting quantum processor

Posted by in categories: cybercrime/malcode, information science, quantum physics

The required precision to perform quantum simulations beyond the capabilities of classical computers imposes major experimental and theoretical challenges. The key to solving these issues are highly precise ways of characterizing analog quantum sim ulators. Here, we robustly estimate the free Hamiltonian parameters of bosonic excitations in a superconducting-qubit analog quantum simulator from measured time-series of single-mode canonical coordinates. We achieve the required levels of precision in estimating the Hamiltonian parameters by maximally exploiting the model structure, making it robust against noise and state-preparation and measurement (SPAM) errors. Importantly, we are also able to obtain tomographic information about those SPAM errors from the same data, crucial for the experimental applicability of Hamiltonian learning in dynamical quantum-quench experiments. Our learning algorithm is highly scalable both in terms of the required amounts of data and post-processing. To achieve this, we develop a new super-resolution technique coined tensorESPRIT for frequency extraction from matrix time-series. The algorithm then combines tensorESPRIT with constrained manifold optimization for the eigenspace reconstruction with pre-and post-processing stages. For up to 14 coupled superconducting qubits on two Sycamore processors, we identify the Hamiltonian parameters — verifying the implementation on one of them up to sub-MHz precision — and construct a spatial implementation error map for a grid of 27 qubits. Our results constitute a fully characterized, highly accurate implementation of an analog dynamical quantum simulation and introduce a diagnostic toolkit for understanding, calibrating, and improving analog quantum processors.

Submitted 18 Aug 2021 to Quantum Physics [quant-ph]

Subjects: quant-ph cond-mat.quant-gas physics.comp-ph.

Jan 5, 2024

QuantumScape’s solid-state batteries pass latest test, could offer 500,000 km without range loss

Posted by in categories: energy, quantum physics, sustainability

One year after initial deliveries of solid-state battery prototypes to its automotive partners, QuantumScape is receiving additional praise from PowerCo – the battery-centric subsidiary of Volkswagen Group – for the potential of its technology. PowerCo recently completed an endurance test with QuantumScape’s solid-state cells and determined they can someday power EVs that can drive 500,000 kilometers with virtually no loss of range.

QuantumScape ($QS) is an advanced battery technology company that has been working for over a decade to develop scalable, energy-dense solid-state battery cells that can one-day power EVs that are safer, charge faster, and drive farther.

During QuantumScape’s tenure in solid-state battery development, Volkswagen Group has been a partner from early on and remains one of the startup’s largest investors. OEMs like Volkswagen have helped empower QuantumScape to continue its development and deliver some of the most promising solid-state battery technology in the industry.

Jan 5, 2024

Breaking the 10-petawatt limit with a new laser amplification

Posted by in categories: health, particle physics, quantum physics, security

Ultra-intense ultrashort lasers have a wide-ranging scope of applications, encompassing basic physics, national security, industrial service, and health care. In basic physics, such lasers have become a powerful tool for researching strong-field laser physics, especially for laser-driven radiation sources, laser particle acceleration, vacuum quantum electrodynamics, and more.

A dramatic increase in peak power, from the 1996 1-petawatt “Nova” to the 2017 10-petawatt “Shanghai Super-intense Ultrafast Laser Facility” (SULF) and the 2019 10-petawatt “Extreme Light Infrastructure—Nuclear Physics” (ELI-NP), is due to a shift in gain medium for large-aperture lasers (from neodymium-doped glass to titanium: crystal). That shift reduced the pulse duration of high-energy lasers from around 500 femtoseconds (fs) to around 25 fs.

However, the for titanium: sapphire ultra-intense ultrashort lasers appears to be 10-petawatt. Presently, for 10-petawatt to 100-petawatt development planning, researchers generally abandon the titanium: sapphire chirped pulse technology, and turn to optical parametric chirped pulse amplification technology, based on deuterated potassium dihydrogen phosphate nonlinear crystals. That technology, due to its low pump-to-signal conversion efficiency and poor spatiotemporal-spectral-energy stability, will pose a great challenge for the realization and application of the future 10–100 petawatt lasers.

Jan 5, 2024

How Can SMEs Prepare For The Quantum Computing Era?

Posted by in categories: computing, quantum physics

Small and medium-sized enterprises should be ready for opportunities and threats of the oncoming quantum era.

Jan 5, 2024

Six Arguments for Quantum Consciousness, and why you should care

Posted by in categories: biological, computing, media & arts, neuroscience, quantum physics

In this introduction to quantum consciousness, Justin Riddle presents six arguments that quantum consciousness is an important theory of mind.\
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To summarize them briefly, People always identify as their latest technology and so most people believe that they are a digital computer. Time to update those models of self, because… Quantum computers are here. We wouldn’t want the brick of metal in our pocket to have greater computational power than our brain. People say the brain is too warm, wet, and noisy for quantum effects; yet, evidence keeps emerging for quantum effects in biology (such as photosynthesis). Where do we draw the line? Evolution might be selecting for quantum systems that can maintain quantum coherence. The debate around the role of quantum mechanics in consciousness has been raging for 100 years. Many key historical figures like Bohr, Schrodinger, Heisenberg, von Neumann entertained the idea that quantum mechanics might relate to our mind. Physical theories that are purely deterministic have failed to account for key aspects of subjective experience. There may be novel answers from a perspective that incorporate new physics.\
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0:00 Introduction\
1:26 1. People identify as their latest technology\
4:07 2. Quantum computers are here\
7:30 3. Biology utilizes quantum properties\
12:00 4. Evolution selects for quantum systems\
14:10 5. Historical precedent for quantum consciousness\
16:30 6. Failure of physical theories to explain\
a. Sense of self\
b. Freewill\
c. Meaning\
21:07 Outro\
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#quantum\
#consciousness\
#philosophy\
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Website: www.justinriddlepodcast.com\
Email: [email protected]\
Twitter: @JRiddlePodcast\
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Music licensed from and created by Baylor Odabashian. BandCamp: @UnscrewablePooch\
Painting behind me by Paul Seli. IG: @paul.seli.art\
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Relevant external link:\
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Jan 4, 2024

Q2B23 SV | Crossing the Quantum Chasm: From NISQ to Fault Tolerance | John Preskill

Posted by in category: quantum physics

John Preskill, Richard P. Feynman Professor of Theoretical Physics and Director, Institute for Quantum Information and Matter, California Institute of Technology | Crossing the Quantum Chasm: From NISQ to Fault Tolerance.

Jan 4, 2024

Researchers propose conditions for maximizing quantum entanglement

Posted by in categories: computing, quantum physics

Entanglement is a property of quantum physics that is manifested when two or more systems interact in such a way that their quantum states cannot be described independently. In the terminology of quantum physics, they are said to be entangled, i.e. strongly correlated. Entanglement is of paramount importance to quantum computing. The greater the entanglement, the more optimized and efficient the quantum computer.

A study conducted by researchers affiliated with the Department of Physics at São Paulo State University’s Institute of Geosciences and Exact Sciences (IGCE-UNESP) in Rio Claro, Brazil, tested a novel method of quantifying and the conditions for its maximization. Applications include optimizing the construction of a quantum computer.

An article on the study is published as a letter in Physical Review B.

Jan 4, 2024

The Download: what’s next for AI, and quantum computing challenges

Posted by in categories: quantum physics, robotics/AI, space travel

Plus: SpaceX has been accused of illegally firing workers.

Jan 4, 2024

Quantum computing is taking on its biggest challenge: noise

Posted by in categories: computing, quantum physics

For a while researchers thought they’d have to make do with noisy, error-prone systems, at least in the near term. That’s starting to change.