New #Paper published in Quantum: Ground state energy and magnetization curve of a frustrated magnetic system from real-time evolution on a digital quantum processor
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New #Paper published in Quantum: Quantum state preparation for multivariate functions
New #Paper published in Quantum: Improving entanglement purification through coherent superposition of roles
New #Paper published in Quantum: Accurate and Honest Approximation of Correlated Qubit Noise
New #Paper published in Quantum: Hamiltonian Learning via Shadow Tomography of Pseudo-Choi States
QuantumHamiltonian Learning via Shadow Tomography of Pseudo-Choi StatesJuan Castaneda and Nathan Wiebe,
Quantum 9, 1700 (2025).
We introduce a new approach to learn Hamiltonians through a resource that we call the pseudo-Choi state, which encodes the Hamiltonian in a state using a procedure that is analogous to the C…
New #Paper published in Quantum: Multi-copy activation of genuine multipartite entanglement in continuous-variable systems
The different kinds of notes by Baldur Bjarnason [Shared]
The post where I outline my general theory of notetaking for all to disagree with
At the end of my last post, I mentioned that I had switched to pen and paper notetaking in the early 2010s, after years of serious digital notetaking using plain text files.
I wrote about how much more enjoyable the analogue notetaking was but what I didn’t mention was why I abandoned my plain text system. Nor did I write about my first foray into serious notetaking.
https://welchwrite.com/blog/2025/04/08/the-different-kinds-of-notes-by-baldur-bjarnason-shared/
New #Paper published in Quantum: Approximate inverse measurement channel for shallow shadows
QuantumApproximate inverse measurement channel for shallow shadowsRiccardo Cioli, Elisa Ercolessi, Matteo Ippoliti, Xhek Turkeshi, and Lorenzo Piroli,
Quantum 9, 1698 (2025).
Classical shadows are a versatile tool to probe many-body quantum systems, consisting of a combination of randomised measurements and classical post-processing computations. In a recently in…
New #Paper published in Quantum: Controlling measurement-induced phase transitions with tunable detector coupling
New #Paper published in Quantum: A Note on Quantum-Secure PRPs
QuantumA Note on Quantum-Secure PRPsMark Zhandry,
Quantum 9, 1696 (2025).
We show how to construct pseudorandom permutations (PRPs) that remain secure even if the adversary can query the permutation, both in the forward and reverse directions, on a quantum superpo…
New #Paper published in Quantum: What can unitary sequences tell us about multi-time physics?
New #Paper published in Quantum: Resource-Optimized Grouping Shadow for Efficient Energy Estimation
QuantumResource-Optimized Grouping Shadow for Efficient Energy EstimationMin Li, Mao Lin, and Matthew J. S. Beach,
Quantum 9, 1694 (2025).
The accurate and efficient energy estimation of quantum Hamiltonians consisting of Pauli observables is an essential task in modern quantum computing. We introduce a Resource-Optimized Group…
New #Paper published in Quantum: Spatially-Coupled QLDPC Codes
New #Paper published in Quantum: Charge and Spin Sharpening Transitions on Dynamical Quantum Trees
New #Paper published in Quantum: Noise-tolerant public-key quantum money from a classical oracle
QuantumNoise-tolerant public-key quantum money from a classical oraclePeter Yuen,
Quantum 9, 1691 (2025).
Quantum money is the task of verifying the validity of banknotes while ensuring that they cannot be counterfeited. Public-key quantum money allows anyone to perform verification, while the p…
New #Paper published in Quantum: Nonlinearity of the Fidelity in Open Qudit Systems: Gate and Noise Dependence in High-dimensional Quantum Computing
Title: Once I was your savior, but now…
Spraypaint, Acryl, De-Collage on wood panel
Framed 30 x 30 cm
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#art #word #modernart #eyes #love #paper #eyes #contemporaryart #myart #painting #streetart #artwork #collage #handmade #gallery #spraypaint #acryl #kiss #artist #fineart #instaart #love #kunst #picoftheday #home #heimat
The price for Europe’s packing paper boom
"For years, #Portugal was a primary source of cellulose in Europe, producing it from vast plantations of #eucalyptus trees. But due to concerns over the fire risk and ecological impact of eucalyptus plantations, the Portuguese government put a halt to their expansion. This decision prompted several European companies to seek alternative locations for large-scale plantations."
https://news.mongabay.com/video/2025/04/the-price-for-europes-packing-paper-boom/
Mongabay Environmental News · The price for Europe’s packing paper boomThe rapid rise of e-commerce and food delivery services has transformed consumption patterns worldwide. In an effort to reduce plastic waste, the European Union introduced policies such as the Packaging and Packaging Waste Regulation, aimed at a shift from single-use plastics to single-use paper products. While these initiatives aim to address the environmental crisis, they […]
