Nature Physics, Published online: 04 February 2026; doi:10.1038/s41567-026-03169-8
Quantum states cannot be copied, which could enable encryption schemes that are impossible classically. Now, substantial progress has been made towards a practical uncloneable encryption protocol using ideas from quantum information theory.
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- Classically impossible cryptography
- Uncloneable encryption from decouplingNature Physics, Published online: 04 February 2026; doi:10.1038/s41567-025-03154-7 Quantum correlations enable some cryptographic protocols that are classically impossible. Now the security of an uncloneable encryption scheme using quantum systems has been proven.
- Selective excitation of work-generating cycles in non-reciprocal living solidsNature Physics, Published online: 03 February 2026; doi:10.1038/s41567-026-03178-7 Starfish embryos can form living chiral crystals. Now it is shown that these crystals can spontaneously, as well as inducibly, transition between two stable states: fluctuating and oscillatory.
- Mitigated chaosNature Physics, Published online: 03 February 2026; doi:10.1038/s41567-026-03173-y Using classical operations to reverse the effects of noise, current quantum devices can outperform classical computers in simulating the dynamics of a chaotic quantum system.
- Towards advanced polarized electron sourcesNature Physics, Published online: 02 February 2026; doi:10.1038/s41567-025-03138-7 Gallium arsenide photocathodes inside a superconducting radio-frequency gun are a promising source of polarized electrons for future colliders. Now the operation of such a source has been demonstrated.
- Radiofrequency gun for spin-polarized electron beamsNature Physics, Published online: 02 February 2026; doi:10.1038/s41567-025-03164-5 Spin-polarized electron beams are important for fundamental physics, but they could only be generated using DC electron guns. Now, a radiofrequency electron gun for polarized electrons has been realized, promising to overcome beam quality limitations.
- Co-propagating photonic topological interface states with hybridized pseudo-spinsNature Physics, Published online: 02 February 2026; doi:10.1038/s41567-026-03172-z Topological interface states typically support the propagation of a single state in each direction, which limits their applicability. Now, co-propagating states are achieved in a photonic topological insulator system.
- Quantum computing isn’t just about scalingNature Physics, Published online: 30 January 2026; doi:10.1038/s41567-025-03110-5 The race to demonstrate quantum error correction often focuses on making ever-larger devices. A demonstration showing that splitting a surface-code logical qubit into two simpler repetition codes substantially reduces logical gate errors reminds us that advancing quantum computing does not hinge solely on scaling qubit numbers.
