Nature Physics, Published online: 21 August 2025; doi:10.1038/s41567-025-03002-8
There are many quantum systems that act as high-quality quantum harmonic oscillators, and they can be used to store quantum information using the Gottesman–Kitaev–Preskill code. Entangling gates have now been demonstrated between two of these qubits.
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- Universal quantum gate set for Gottesman–Kitaev–Preskill logical qubits
- Optical signatures of interlayer electron coherence in a bilayer semiconductorNature Physics, Published online: 20 August 2025; doi:10.1038/s41567-025-02971-0 Condensates of excitons have been observed in the quantum Hall regime, but evidence for their existence at low magnetic fields remains controversial. Now evidence of coherence between optically pumped interlayer excitons in MoS2 marks a step towards confirming exciton condensation at low magnetic fields.
- Evasive condensate caught by fingerprintsNature Physics, Published online: 20 August 2025; doi:10.1038/s41567-025-03017-1 Like charges can pair up to make superconductors, so intuitively opposite charges should also have no trouble forming pairs. But condensates of electron–hole pairs are not common — one must search carefully for their fingerprints.
- Image-guided treatment of mouse tumours with radioactive ion beamsNature Physics, Published online: 19 August 2025; doi:10.1038/s41567-025-02993-8 Particle therapy is subject to uncertainties in the range of the beam. In this study, tumours in the necks of mice were treated with radioactive ion beams, which enabled real-time verification of the beam range.
- Magnon-polaritons dance around exceptional pointsNature Physics, Published online: 19 August 2025; doi:10.1038/s41567-025-02999-2 Coherent control of magnon excitations is crucial for their potential device application. The integration of the exceptional point in a magnon-photon hybrid system is shown to offer fast, coherent and topologically robust control of magnon-polariton states.
- Coherent control of magnon–polaritons using an exceptional pointNature Physics, Published online: 19 August 2025; doi:10.1038/s41567-025-02998-3 Deterministic control of the gain–loss balance in non-Hermitian systems remains challenging. A magnonic hybrid platform is now shown to enable this and, hence, coherently control excitations by leveraging an exceptional point.
- Entanglement and the density matrix renormalization group in the generalized Landau paradigmNature Physics, Published online: 15 August 2025; doi:10.1038/s41567-025-02961-2 Quantum spin chains can be represented in several ways, and eigenstates in these dual models have different entanglement structures. By characterizing the dual theories, the optimal tensor network algorithm for simulating the models has been found.
- Efficient implementation of arbitrary two-qubit gates using unified controlNature Physics, Published online: 15 August 2025; doi:10.1038/s41567-025-02990-x The efficiency of a quantum computer depends on which basic operations it can implement. Now a scheme that can implement any two-qubit logic gate has been demonstrated on a superconducting architecture.
