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A violation of the so-called Bell inequality represents a strong proof of the ability to create and control quantum states of a pair of quantum bits with no classical analogues. Andrea Morello and co-workers have now demonstrated a violation of Bells inequality in a pair of qubits in silicon, encoded in the electron spin and the nuclear spin associated with a single phosphorus donor embedded in a nanoelectronic device. The cover image is an artists impression of visual fragments mapped spatially from data directly extracted from the measurement of the quantum state of the phosphorus atom. It expresses the creation of entangled qubits that lie at the heart of quantum computation.
Increasing globalization means that traditional occupational epidemiological approaches may no longer apply, suggesting a need for an alternative model to assess the long-term impact of nanomaterial exposure on health.
The potential risks surrounding nanotechnology can often appear complex and confusing. But with some basic guideposts, argues Andrew D. Maynard, navigating them can become a little easier.
An entangled state of two spin qubits in silicon has been prepared and measured, yielding a violation of Bell's inequality that is the largest achieved in the solid state so far.
This article reviews recent progress in the use of graphene and other two-dimensional atomic crystals in catalytic applications, highlighting the activity and potential of heterogeneous systems such as van der Waals heterostructures.
This article reviews efforts to control and monitor the magnetization in antiferromagnetic materials, as well as the prospects for antiferromagnetic spintronics applications.
A violation of Bell's inequality, which is a direct proof of entanglement, can be observed in the solid state using the electron and nuclear spins of a single phosphorus atom in silicon.
The sensitivity of electron spin resonance has been improved up to the quantum limit through the use of a Josephson parametric microwave amplifier combined with high-quality-factor superconducting microresonators cooled at millikelvin temperatures.
A heat modulator designed to control the phase-coherent component of the thermal current at the nanoscale can be realized with a superconducting quantum interference device.
Cantilevers made of SrTiO3 grown on silicon use the flexoelectric effect to achieve electromechanical performances similar to piezoelectric bimorph cantilevers.
Air-stable monolayers of diamondoids can rival cesium's work-function-lowering ability and can dramatically increase field emission current through a radical cation mechanism.
A single layer of La atoms placed on the tip of a LaB6 nanowire suppresses chemical reactions and promotes emission of free electrons, creating an electron source with very low noise and high stability.
The synchronization between nanocontact oscillators can be promoted by purposefully taking advantage of Oersted field-induced spin-wave beams, thus allowing synchronization of at least five oscillators.
By adapting DNA strand displacement and exchange reactions to mammalian cells, DNA circuitry is developed that can directly interact with a native mRNA.
Virus-like nanoparticles such as the cowpea mosaic virus, known to have inherent immunogenic properties, are now used to suppress metastatic cancer in various mouse models.