Search results for: Quantum

Persistent Tensors and Multiqudit Entanglement Transformation

Source Node: https://quantum-journal.org/papers/q-2024-01-31-1238/
Time Stamp: January 31, 2024 9:34 AM - Modified On: January 31, 2024 - Published By:
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Masoud Gharahi1 and Vladimir Lysikov21QSTAR, INO-CNR and LENS, Largo Enrico Fermi 2, 50125 Firenze, Italy2Ruhr University Bochum, 44801 Bochum, GermanyFind this paper interesting or want to discuss? Scite or leave a comment on SciRate.AbstractWe construct a lower bound of the tensor rank for a new class of tensors, which we call $textit{persistent tensors}$. We present three specific families of persistent tensors, of which the lower bound is tight. We show that there is a chain of degenerations between these three families of minimal-rank persistent tensors that can be used to

Dark solitons spotted in ring semiconductor lasers – Physics World

Source Node: https://physicsworld.com/a/dark-solitons-spotted-in-ring-semiconductor-lasers/
Time Stamp: January 31, 2024 8:01 AM - Modified On: January 31, 2024 - Published By:
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Darkness and light: dark solitons have been created in an electrically-injected laser. (Courtesy: iStock/agsandrew) Dark solitons – regions of optical extinction against bright backgrounds – have been seen spontaneously forming in ring semiconductor lasers. Made by an international team of researchers, the observation could lead to improvements in molecular spectroscopy and integrated optoelectronics. Frequency combs – pulsed lasers that output light with equally-spaced frequencies – are one of the most important achievements in the history of laser physics. Sometimes referred to as optical rulers, they are the basis of time

Quantum Tech Pod Episode 66: Elie Girard, Executive Chairman, Alice & Bob – Inside Quantum Technology

Source Node: https://www.insidequantumtechnology.com/news-archive/quantum-tech-pod-episode-66-elie-girard-executive-chairman-alice-bob/
Time Stamp: January 31, 2024 6:00 AM - Modified On: January 31, 2024 - Published By:
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By Christopher Bishop posted 31 Jan 2024 My latest Quantum Tech Pod with Elie Girard, Executive Chairman of quantum company Alice & Bob, is live!  Elie has over 20 years of leadership experience in various companies, including his most recent role as CEO and director at Atos. His company, Alice & Bob, focuses on cat qubits, a novel approach that enables them to reduce hardware requirements for building fault-tolerant quantum computers by up to 200 times compared to other current solutions. Elie shared his perspective on the broad implications of

Quantum News Briefs: January 31, 2024: The University of Tokyo, the National University of Seoul and the University of Chicago sign $100 million deal funded by IBM to create a quantum computing ecosystem; Korea Quantum Computing and IBM Collaborate to Bring IBM Watsonx and Quantum Computing to Korea; Aquark’s unique technique for generating cold atoms achieved by University of Birmingham; New Research Collaboration Unites Quantum Engineering and Artificial Intelligence; Wall Street Favorites: 3 Quantum Computing Stocks with Strong Buy Ratings in January 2024; and MORE! – Inside Quantum Technology

Source Node: https://www.insidequantumtechnology.com/news-archive/quantum-news-briefs-january-31-2024-the-university-of-tokyo-the-national-university-of-seoul-and-the-university-of-chicago-sign-100-million-deal-funded-by-ibm-to-create-a-quantum-computing-ecosys/
Time Stamp: January 31, 2024 6:00 AM - Modified On: January 31, 2024 - Published By:
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By Kenna Hughes-Castleberry posted 31 Jan 2024 Quantum News Briefs: January 31, 2024:  The University of Tokyo, the National University of Seoul and the University of Chicago sign $100 million deal funded by IBM to create a quantum computing ecosystem In a landmark collaboration at Davos, Switzerland, the University of Tokyo, the National University of Seoul, and the University of Chicago have partnered with IBM in a $100 million project to develop a quantum computer ecosystem over the next decade. This ambitious project aims to build a supercomputer capable of

Machine learning takes hassle out of cold-atom experiments – Physics World

Source Node: https://physicsworld.com/a/machine-learning-takes-hassle-out-of-cold-atom-experiments/
Time Stamp: January 31, 2024 4:29 AM - Modified On: January 31, 2024 - Published By:
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Automatic adjustments: A view into the vacuum chamber containing the Tübingen group's rubidium magneto-optical trap (MOT). The frequency of the MOT lasers is controlled by a reinforcement learning agent. (Courtesy: Malte Reinschmidt) Cold atoms solve many problems in quantum technology. Want a quantum computer? You can make one from an array of ultracold atoms. Need a quantum repeater for a secure communications network? Cold atoms have you covered. How about a quantum simulator for complicated condensed-matter problems? Yep, cold atoms can do that, too. The downside is that doing any

China puts homegrown AI infrastucture on its to do list

Source Node: https://go.theregister.com/feed/www.theregister.com/2024/01/31/china_homegrown_ai_infrastucture/
Time Stamp: January 31, 2024 12:59 AM - Modified On: January 31, 2024 - Published By:
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China has given itself a goal to become a world-leading source of AI infrastructure by 2027, the country's Ministry of Industry and Information Technology (MIIT) announced in a policy document released on Monday. The document lists facilities and technologies that Beijing has declared important to a technologically advanced future economy – including an "ultra-large-scale new intelligent computing center" that can handle iterative training of large models. To make this "innovative iconic" product happen, Beijing said it must accelerate breakthroughs in GPUs, clustered low-latency interconnection networks, and heterogeneous resource management tech

Korea Quantum Computing and IBM Collaborate – High-Performance Computing News Analysis | insideHPC

Source Node: https://insidehpc.com/2024/01/korea-quantum-computing-and-ibm-collaborate/
Time Stamp: January 30, 2024 3:33 PM - Modified On: January 30, 2024 - Published By:
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BUSAN, South Korea, Jan. 29, 2024 — IBM (NYSE: IBM) today announced that Korea Quantum Computing (KQC) has engaged IBM to offer IBM’s AI software and infrastructure, as well as quantum computing services. KQC’s ecosystem of users will have access to IBM’s full stack solution for AI, including watsonx, an AI and data platform to train, tune and deploy advanced AI models and software for enterprises. KQC is also expanding its quantum computing collaboration with IBM. Having operated as an IBM Quantum Innovation Center since 2022, KQC will continue to offer access

Chain-mapping methods for relativistic light-matter interactions

Source Node: https://quantum-journal.org/papers/q-2024-01-30-1237/
Time Stamp: January 30, 2024 8:55 AM - Modified On: January 30, 2024 - Published By:
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Robert H. Jonsson1,2 and Johannes Knörzer31Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748 Garching, Germany2Nordita, Stockholm University and KTH Royal Institute of Technology, Hannes Alfvéns väg 12, SE-106 91 Stockholm, Sweden3Institute for Theoretical Studies, ETH Zurich, 8092 Zurich, SwitzerlandFind this paper interesting or want to discuss? Scite or leave a comment on SciRate.AbstractThe interaction between localized emitters and quantum fields, both in relativistic settings and in the case of ultra-strong couplings, requires non-perturbative methods beyond the rotating-wave approximation. In this work we employ chain-mapping methods to achieve a numerically exact treatment of

Cisco joins Nu Quantum on U.K. QNU project – Inside Quantum Technology

Source Node: https://www.insidequantumtechnology.com/news-archive/cisco-joins-nu-quantum-an-u-k-qnu-project/
Time Stamp: January 30, 2024 6:30 AM - Modified On: January 30, 2024 - Published By:
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By Dan O'Shea posted 30 Jan 2024 Cisco Systems has been playing in the quantum space for years, working on quantum networking, security, and other objectives, and now the networking giant has been revealed as a new partner of Nu Quantum, a Cambridge, U.K.-based quantum networking company working on a U.K. government project. Nu Quantum, which has been around since 2018 and announced its latest funding last November, recently won a U.K. government contract with a gross value of £2.3 million under the LYRA quantum networking project. Cisco will become

Bounding entanglement dimensionality from the covariance matrix

Source Node: https://quantum-journal.org/papers/q-2024-01-30-1236/
Time Stamp: January 30, 2024 6:07 AM - Modified On: January 30, 2024 - Published By:
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Shuheng Liu1,2,3, Matteo Fadel4, Qiongyi He1,5,6, Marcus Huber2,3, and Giuseppe Vitagliano2,31State Key Laboratory for Mesoscopic Physics, School of Physics, Frontiers Science Center for Nano-optoelectronics, & Collaborative Innovation Center of Quantum Matter, Peking University, Beijing 100871, China2Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, 1020 Vienna, Austria3Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, 1090 Vienna, Austria4Department of Physics, ETH Zürich, 8093 Zürich, Switzerland5Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China6Hefei National Laboratory, Hefei 230088, ChinaFind this paper interesting or want