npj Quantum Information, Published online: 21 November 2024; doi:10.1038/s41534-024-00899-6 Researchers propose a multi-particle ‘which-path’ gedanken experiment with a quantum detector. Contrary to conventional ‘which-path’ experiments, the detector maintains its quantum state during interactions with the […]

npj Quantum Information, Published online: 21 November 2024; doi:10.1038/s41534-024-00901-1 A central building block of many quantum algorithms is the diagonalization of Pauli operators. Although it is always possible to construct a quantum circuit that simultaneously […]

Scientists have developed an innovative technique for studying nuclear structure using high-energy particle collisions at the Relativistic Heavy Ion Collider (RHIC), a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research located […]

South Korean researchers at the Electronics and Telecommunications Research Institute (ETRI) have achieved a significant breakthrough in quantum computing with their development of an advanced photonic quantum circuit chip. The chip’s most notable feature is […]

npj Quantum Information, Published online: 14 November 2024; doi:10.1038/s41534-024-00911-z Quantum networks connect and supply a large number of nodes with multi-party quantum resources for secure communication, networked quantum computing and distributed sensing. As these networks […]

Scientists have achieved a breakthrough in creating photonic time crystals, groundbreaking materials that can exponentially amplify light. This development could revolutionize lasers, sensors, and communication technologies. The international research team’s work was published in Nature […]

npj Quantum Information, Published online: 13 November 2024; doi:10.1038/s41534-024-00902-0 Quantum generative models provide inherently efficient sampling strategies and thus show promise for achieving an advantage using quantum hardware. In this work, researchers have investigated the […]

npj Quantum Information, Published online: 11 November 2024; doi:10.1038/s41534-024-00913-x The Kirkwood-Dirac quasiprobability distribution, intimately connected with the quantum correlation function of two observables measured at distinct times, is becoming increasingly relevant for fundamental physics and […]

npj Quantum Information, Published online: 09 November 2024; doi:10.1038/s41534-024-00909-7 Lightcone bounds for quantum circuit mapping via uncomplexity Efficiently mapping quantum circuits onto hardware is integral for the quantum compilation process, wherein a circuit is modified […]

npj Quantum Information, Published online: 09 November 2024; doi:10.1038/s41534-024-00907-9 Unified linear response theory of quantum electronic circuits Modeling the electrical response of multi-level quantum systems at finite frequency has been typically performed in the context […]

npj Quantum Information, Published online: 07 November 2024; doi:10.1038/s41534-024-00905-x Finding the optimal probe state for multiparameter quantum metrology using conic programming The ultimate precision in quantum sensing could be achieved using optimal quantum probe states. […]

npj Quantum Information, Published online: 07 November 2024; doi:10.1038/s41534-024-00915-9 Cavity-assisted resonance fluorescence from a nitrogen-vacancy center in diamond The nitrogen-vacancy center in diamond is an attractive resource for the generation of remote entangled states owing […]

npj Quantum Information, Published online: 06 November 2024; doi:10.1038/s41534-024-00906-w Scaling whole-chip QAOA for higher-order ising spin glass models on heavy-hex graphs In this paper, the team of researchers has showed that the quantum approximate optimization […]

npj Quantum Information, Published online: 06 November 2024; doi:10.1038/s41534-024-00900-2 Classification of dynamical Lie algebras of 2-local spin systems on linear, circular and fully connected topologies Much is understood about 1-dimensional spin chains in terms of […]

npj Quantum Information, Published online: 05 November 2024; doi:10.1038/s41534-024-00912-y Time-optimal control of a solid-state spin amidst dynamical quantum wind Time-optimal control holds promise across the full spectrum of quantum technologies, where the rapid generation of […]

npj Quantum Information, Published online: 02 November 2024; doi:10.1038/s41534-024-00910-0 Qubit teleportation between a memory-compatible photonic time-bin qubit and a solid-state quantum network node This paper reports on a quantum interface linking a diamond NV center […]

npj Quantum Information, Published online: 02 November 2024; doi:10.1038/s41534-024-00898-7 An architecture for two-qubit encoding in neutral ytterbium-171 atoms In this paper, researchers present an architecture for encoding two qubits within the optical “clock” transition and […]

npj Quantum Information, Published online: 31 October 2024; doi:10.1038/s41534-024-00878-x Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day […]

npj Quantum Information, Published online: 26 October 2024; doi:10.1038/s41534-024-00904-y Robust projective measurements through measuring code-inspired observables Quantum measurements are ubiquitous in quantum information processing tasks, but errors can render their outputs unreliable. Here, researchers present […]

npj Quantum Information, Published online: 26 October 2024; doi:10.1038/s41534-024-00891-0 Extending radiowave frequency detection range with dressed states of solid-state spin ensembles Quantum sensors using solid-state spin defects excel in the detection of radiofrequency (RF) fields, […]