Nature Physics, Published online: 27 January 2025; doi:10.1038/s41567-024-02756-x
Ultracold recombination reactions typically produce molecules in many uncontrolled quantum states. Quantum control over reaction products has now been demonstrated via magnetic Feshbach resonances.
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- Magnetic fields take the lead in ultracold reactions
- Quantum thermodynamics for quantum computingNature Physics, Published online: 27 January 2025; doi:10.1038/s41567-024-02764-x Quantum thermodynamics has provided theoretical insights into the foundations of quantum and statistical physics. Now, a quantum thermal machine has found an application — cooling qubits in a quantum computer.
- Experimental fault-tolerant code switchingNature Physics, Published online: 24 January 2025; doi:10.1038/s41567-024-02727-2 Quantum error correction is essential for reliable quantum computing, but no single code supports all required fault-tolerant gates. The demonstration of switching between two codes now enables universal quantum computation with reduced overhead.
- A many-body quantum register for a spin qubitNature Physics, Published online: 24 January 2025; doi:10.1038/s41567-024-02746-z The thousands of nuclear spins surrounding gallium arsenide quantum dots can interface with electron spin qubits and photons. With quantum engineering, this nuclear spin ensemble becomes a robust register for quantum information storage.
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- Gauge theories on a quantum computerNature Physics, Published online: 23 January 2025; doi:10.1038/s41567-024-02758-9 Many important models in theoretical physics — including the standard model of particle physics — are governed by local ‘gauge’ symmetries. Now, a quantum computer has successfully simulated a lattice gauge theory by leveraging this rich symmetry structure.
- Free-electron quantum opticsNature Physics, Published online: 22 January 2025; doi:10.1038/s41567-024-02743-2 Free-electron quantum optics is an emerging field that requires a quantum-mechanical description of both the electronic and the optical contributions. This Perspective summarizes recent developments and discusses challenges and opportunities.
- Programmable simulations of molecules and materials with reconfigurable quantum processorsNature Physics, Published online: 22 January 2025; doi:10.1038/s41567-024-02738-z Quantum simulations of chemistry and materials are challenging due to the complexity of correlated systems. A framework based on reconfigurable qubit architectures and digital–analogue simulations provides a hardware-efficient path forwards.
