What happens when a quantum physicist is frustrated by the limitations of quantum mechanics when trying to study densely packed atoms? At EPFL, you get a metamaterial, an engineered material that exhibits exotic properties. Click […]
Quantum 9, 1672 (2025). https://doi.org/10.22331/q-2025-03-25-1672 Multi-armed bandits are one of the theoretical pillars of reinforcement learning. Recently, the investigation of quantum algorithms for multi-armed bandit problems was started, and it was found that a quadratic […]
Insider Brief PsiQuantum is raising at least $750 million at a $6 billion pre-money valuation to build a fault-tolerant quantum computer using photonic chips, Reuters reports. The company manufactures its light-based qubits on silicon chips […]
Quantum 9, 1671 (2025). https://doi.org/10.22331/q-2025-03-25-1671 Flat bands (FBs) are energy bands with zero group velocity, which in electronic systems were shown to favor strongly correlated phenomena. Indeed, a FB can be spanned with a basis […]
Quantum 9, 1670 (2025). https://doi.org/10.22331/q-2025-03-25-1670 We propose a definition of wavefunction “branchings”: quantum superpositions which can’t be feasibly distinguished from the corresponding mixed state, even under time evolution. Our definition is largely independent of interpretations, […]
Quantum 9, 1669 (2025). https://doi.org/10.22331/q-2025-03-25-1669 Computing vacuum states of lattice gauge theories (LGTs) containing fermionic degrees of freedom can present significant challenges for classical computation using Monte-Carlo methods. Quantum algorithms may offer a pathway towards […]
Quantum 9, 1668 (2025). https://doi.org/10.22331/q-2025-03-25-1668 In quantum many-body systems, complex dynamics delocalize the physical degrees of freedom. This spreading of information throughout the system has been extensively studied in relation to quantum thermalization, scrambling, and […]
Insider Brief Classiq Technologies, in collaboration with Sumitomo Corporation and Mizuho–DL Financial Technology, achieved up to 95% compression of quantum circuits for Monte Carlo simulations used in financial risk analysis. The study compared traditional and […]
Insider Brief: ColibriTD successfully executed its Hybrid Differential Equation Solver on IBM’s 156-qubit Heron R2 processor. The company describes this as the first real-hardware solution of a PDE using a variational quantum algorithm. H-DES addresses […]
Insider Brief: Diraq and Fermilab have been awarded the DOE’s Quandarum project under the QuantISED program, supporting the development of quantum sensors to investigate dark matter and fundamental physics. The collaboration will integrate Diraq’s silicon […]
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