Nature Physics, Published online: 13 March 2026; doi:10.1038/s41567-026-03182-x
Quantum information theory typically considers the asymptotic limit of having access to many copies of quantum states, which can be challenging to analyse. Now an asymptotic measure of entanglement that only needs a single copy of a quantum state has been found
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- Asymptotic quantification of entanglement with a single copy
- Entanglement quantification made simpler through hypothesis testingNature Physics, Published online: 13 March 2026; doi:10.1038/s41567-026-03186-7 Understanding how to optimally detect and extract quantum entanglement typically involves intractable formulae that require optimization over many copies of quantum states. A shift of perspective leads to a much simpler formula based on the quantum relative entropy of a single quantum state, made possible by a new result in quantum state discrimination.
- Universal dynamics and microwave control of programmable resonant electro-optic frequency combsNature Physics, Published online: 12 March 2026; doi:10.1038/s41567-026-03198-3 The physics of resonant electro-optic microcomb generation is underexplored, limiting their potential applications. Now several technological advances are realized by studying the state space of a thin-film lithium niobate photonic frequency comb.
- One- and two-dimensional cluster states for topological phase simulation and measurement-based quantum computationNature Physics, Published online: 11 March 2026; doi:10.1038/s41567-026-03179-6 Measurement-based quantum computing implements quantum algorithms by performing sequences of measurements on special classes of entangled states, such as cluster states. This approach has now been demonstrated on a superconducting quantum processor.
- Magnetic field-induced momentum-dependent symmetry breaking in a kagome superconductorNature Physics, Published online: 11 March 2026; doi:10.1038/s41567-026-03205-7 Disentangling intertwined orders in quantum materials is challenging. Now, photoemission spectroscopy experiments show that magnetic fields can be used to disentangle such orders in a kagome superconductor.
- When percolation triggers fatigueNature Physics, Published online: 10 March 2026; doi:10.1038/s41567-026-03210-w Everyday objects often fail from repeated stress. A study shows that fatigue failure in glasses is governed by damage percolation and predictable from early-cycle energy dissipation.
- Geometric origin of particle and dislocation dynamics during grain boundary migrationNature Physics, Published online: 09 March 2026; doi:10.1038/s41567-025-03165-4 Grain boundaries in polycrystalline systems display complicated dynamics. Now, a general framework is presented that predicts the microscopic dynamics of both particles and dislocations underlying grain boundary migration in two-dimensional colloids.
- Logical multi-qubit entanglement with dual-rail superconducting qubitsNature Physics, Published online: 06 March 2026; doi:10.1038/s41567-026-03211-9 Quantum computers often exhibit a bias in the type of error that is the most common or severe. Entanglement has now been demonstrated for qubits encoded with an error correction code that is designed to efficiently handle biased errors.
