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Engineering of the coupling between optical modes in a lithium niobate chip enables the realization of tunable, bi-directional and low-loss electro-optic frequency shifters controlled using only continuous and single-tone microwaves.
Two-dimensional transition metal dichalcogenide diodes with defect-free van der Waals contacts allows minimization of the extrinsic interfacial disorder-dominated recombination and access to the intrinsic excitonic behaviour in two-dimensional semiconductor devices.
In a tiny chip-based particle accelerator, phase-space control of the emerging electron beam demonstrates guiding over a length of nearly 80 micrometres and an indispensable prerequisite to electron acceleration to high energies.
Gold nanoflake pairs form by self-assembly in an aqueous ligand solution and offer stable and tunable microcavities by virtue of equilibrium between attractive Casimir forces and repulsive electrostatic forces.
An integrated photonic processor, based on phase-change-material memory arrays and chip-based optical frequency combs, which can operate at speeds of trillions of multiply-accumulate (MAC) operations per second, is demonstrated.
In the tiniest of capillaries, barely larger than a water molecule, condensation is surprisingly predictable from the macroscopic Kelvin condensation equation, a coincidence partially owing to elastic deformation of the capillary walls.
Logic operations and reconfigurable circuits are demonstrated that can be directly implemented using memory elements based on floating-gate field-effect transistors with monolayer MoS2 as the active channel material.
An ultimately thin microwave bolometric sensor based on a superconductor–graphene–superconductor Josephson junction with monolayer graphene has a sensitivity approaching the fundamental limit imposed by intrinsic thermal fluctuations.
A fundamental superconducting qubit is introduced: ‘blochnium’ is dual to the transmon, relies on a circuit element called hyperinductance, and its fundamental physical variable is the quasicharge of the Josephson junction.
A new class of voltage-controllable electrochemical actuators that are compatible with silicon processing are used to produce over one million sub-hundred-micrometre walking robots on a single four-inch wafer.
A biomimetic electrochemical eye is presented that has a hemispherical retina made from a high-density array of perovskite nanowires that are sensitive to light, mimicking the photoreceptors of a biological retina.
Room-temperature electrical switching of a topological antiferromagnetic state in polycrystalline Mn3Sn thin films is demonstrated using the same protocol as that used for conventional ferromagnetic metals.
An on-chip, all-electronic device based on the formation of a nanoplasma provides ultrafast electron transfer, enabling picosecond switching of electric signals and the generation of high-power terahertz pulses.
Coherent quantum control of a single 123Sb nucleus using electric fields produced within a silicon nanoelectronic device is demonstrated experimentally, validating a concept predicted theoretically in 1961.
The existence of the Kondo cloud is revealed by the spatially resolved characterization of the oscillations of the Kondo temperature in a Fabry–Pérot interferometer and its extent is shown to be several micrometres.
Optical chiral induction and spontaneous gyrotropic electronic order are realized in the transition-metal chalcogenide 1T-TiSe2 by using illumination with mid-infrared circularly polarized light and simultaneous cooling below the critical temperature.
A universal mechanical exfoliation method of creating freestanding membranes of complex-oxide materials with different crystal structures and orientations and stacking them to produce a range of artificial heterostructures with hybridized physical properties is described.
A fully hardware-based memristor convolutional neural network using a hybrid training method achieves an energy efficiency more than two orders of magnitude greater than that of graphics-processing units.
Microwave-mediated coupling of electron spins separated by more than 4 mm is demonstrated, suggesting the possibility of using photons at microwave frequencies to create long-range two-qubit gates between distant spins.
The emergence of a liquid-like electronic flow from ballistic flow in graphene is imaged, and an almost-ideal viscous hydrodynamic fluid of electrons exhibiting a parabolic Poiseuille flow profile is observed.
Transmission of single-spin and entangled quantum states without the physical displacement of electrons is demonstrated in a quadruple quantum dot array using the Heisenberg exchange interaction and coherent SWAP gates.
A probabilistic computer utilizing probabilistic bits, or p-bits, is implemented with stochastic nanomagnetic devices in a neural-network-inspired electrical circuit operating at room temperature and demonstrates integer factorization up to 945.
A fast, high-fidelity two-qubit exchange gate between phosphorus donor electron spin qubits in silicon is demonstrated by creating a tunable exchange interaction between two electrons bound to phosphorus atom qubits.
The thermal conductance of single-molecule junctions is measured using picowatt-resolution calorimetric scanning probes and is found to be nearly independent of the length of the alkanedithiol molecules studied.
Majorana bound states are created in a two-dimensional architecture by confining Majorana channels within a planar Josephson junction, using the phase difference across the junction and an in-plane magnetic field.
Ultraclean van der Waals bonds between gold-capped indium and a monolayer of the two-dimensional transition-metal dichalcogenide molybdenum disulfide show desirably low contact resistance at the interface, enabling high-performance field-effect transistors.
Using a thin-film lithium niobate photonic platform, an electro-optic frequency comb generator is realized that is capable of producing wide and stable spectra, spanning more frequencies than the entire telecommunications L-band.
The ‘negative luminescence’ of a reverse-biased photodiode is harnessed to draw thermal energy from a nearby solid object, thereby realizing photonic cooling without the use of coherent laser radiation.
Integration of an ultrafast flexible rectifier made from a two-dimensional material with a flexible antenna achieves wireless energy harvesting of Wi-Fi radiation, which could power future flexible electronic systems.
Topological nanoelectromechanical metamaterials are realized at the micrometre scale, using silicon nitride nanomembranes, opening the way for on-chip integrated acoustic components in high-frequency signal-processing applications.