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Excitation and gate tuning of terahertz plasmons in dual-layer graphene integrated into on-chip telecom photonic waveguides using infrared lasers has now been demonstrated. This may open the door to atomically thick optoelectronic devices for security, tomography or data processing.
The science of superoscillations and the creation of local regions of light on a subwavelength scale is attracting attention for new forms of super-resolution microscopy and stiffer optical traps.
A 10 Gb s–1 phase modulator based on a graphene-on-silicon Mach–Zehnder interferometer (MZI) is reported. The compact device has a phase-shifter length of only 300 μm and provides modulation of light at 1,550 nm with a 35 dB extinction ratio.
A theoretical analysis of asymmetric dressed quantum dots in a photonic crystal cavity suggests that the system could form a new type of solid-state terahertz laser. However, an experimental realization will likely require advances in fabrication technology.
This Review covers key advancements in X-ray ptychographic microscopy and tomography over the past ten years. Potential applications in the life and materials sciences, the latest concepts and future developments are also discussed.
Ferroelectric domains are optically reconfigured by a reversible process. The tuning is sufficient to enable macroscopically observable responses and the findings may help lead to the development of photo-stimulated ferroelectric devices.
A quantum memory based on a rubidium atom shows a record-long storage time of 100 ms with a readout efficiency of 22%. The photonic qubit is transferred between a basis with strong light–matter coupling and a basis with low decoherence.
Frequency-resolved transient excited-state absorption of a single molecule is measured at room temperature. The dynamic Stokes shift and vibrational cooling are directly measured with 25 fs temporal resolution and a spectral detection bandwidth of hundreds of meV.
Through a high-numerical-aperture multimode fibre, real-time manipulation of three-dimensional arrangements of micro-objects and manipulation inside inaccessible cavities are shown. The approach is useful for imaging deep inside living tissues and complex environments.
