Quantum 10, 2011 (2026). https://doi.org/10.22331/q-2026-03-04-2011 Efficient verification of multipartite quantum states is crucial to many applications in quantum information processing. By virtue of Schmidt decomposition and mutually unbiased bases, here we propose a universal protocol […]
Quantum 10, 2010 (2026). https://doi.org/10.22331/q-2026-03-04-2010 States of open quantum systems often decay continuously under environmental interactions. Quantum Markov semigroups model such processes in dissipative environments. It is known that finite-dimensional quantum Markov semigroups with GNS […]
Quantum 10, 2009 (2026). https://doi.org/10.22331/q-2026-02-23-2009 Quantum computing is deemed to require error correction at scale to mitigate physical noise by reducing it to lower noise levels while operating on encoded logical qubits. Popular quantum error […]
Quantum 10, 2008 (2026). https://doi.org/10.22331/q-2026-02-23-2008 Unitary designs are essential tools in several quantum information protocols. Similarly to other design concepts, unitary designs are mainly used to facilitate averaging over a relevant space, in this case, […]
Quantum 10, 2007 (2026). https://doi.org/10.22331/q-2026-02-23-2007 We study the task of localizing multipartite entanglement in pure quantum states onto a subsystem by measuring the remaining systems. To this end, we fix a multipartite entanglement measure and […]
Quantum 10, 2006 (2026). https://doi.org/10.22331/q-2026-02-23-2006 We propose modifying topological quantum error correcting codes by incorporating space-time defects, termed “time vortices,” to reduce the number of physical qubits required to achieve a desired logical error rate. […]
Quantum 10, 2005 (2026). https://doi.org/10.22331/q-2026-02-23-2005 In stochastic modeling, the excess entropy – the mutual information shared between a process’s past and future – represents the fundamental lower bound of the memory needed to simulate its […]
Quantum 10, 2004 (2026). https://doi.org/10.22331/q-2026-02-11-2004 The QMA-completeness of the local Hamiltonian problem is a landmark result of the field of Hamiltonian complexity that studies the computational complexity of problems in quantum many-body physics. Since its […]
Quantum 10, 2003 (2026). https://doi.org/10.22331/q-2026-02-10-2003 Quantum error mitigation techniques mimic noiseless quantum circuits by running several related noisy circuits and combining their outputs in particular ways. How well such techniques work is thought to depend […]
Quantum 10, 2002 (2026). https://doi.org/10.22331/q-2026-02-10-2002 Certified randomness has a long history in quantum information, with many potential applications. Recently Aaronson and Hung proposed a novel public certified randomness protocol based on existing random circuit sampling […]
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