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Non-magnetic optical isolators are demonstrated using phonon-mediated photonic Autler–Townes splitting. The on-chip lithium niobate devices simultaneously achieve ultralow insertion loss and high contrast.
An electrically driven, magnetic-free optical isolator is demonstrated. The device, based on aluminium nitride piezoelectric modulators and a silicon nitride microring resonator, may be useful for integrated lasers and other opto-electric systems.
Quantum photonic integrated circuits for a standalone quantum secure communication system are developed and packaged into pluggable interconnects. The system is interfaced with 100 Gb s–1 data encryptors and its performance is evaluated over 10 km to 50 km fibre links.
Multiplexing orbital angular momentum states as independent and orthogonal information carriers for data encryption is realized through disorder-induced synthetic helical dichroism in disordered nanoaggregates.
Positron emission imaging without tomographic reconstruction is demonstrated. A Cherenkov radiation detector detects gamma rays produced by positron–electron annihilation. The position of a positron source is determined with a precision of 4.8 mm.
Quantum teleportation of a photonic qubit into mechanical modes of two silicon photonic crystal nanobeams is demonstrated. It allows to store and retrieve an arbitrary qubit state onto a dual-rail encoded long-lived optomechanical quantum memory.
Perovskite crystals of Cs4PbBr6 embedded with CsPbBr3 nanocrystals are shown to act as wideband, achromatic waveplates in the visible and near-infrared regions.
Solution-processed infrared lasers that operate at room temperature are a challenge, but now researchers have achieved such a device using colloidal quantum dots.
This study reveals the importance of host–guest interactions for effective multiple-resonance thermally activated delayed fluorescence in organic light emitters.
Parametric driving of Kerr solitons – cavity soliton excitation around twice the carrier frequency of solitons – in an optical parametric oscillator with competing nonlinearities look prone to extend the applications of Kerr resonators to random number generators and Ising machines.
Strong lanthanide-doped upconversion luminescence enhancement is achieved by the use of surface molecules which enhance four-photon upconversion emission. The results may lead to new, highly emissive, nanohybrid systems.
All-optical modulation of second-harmonic generation in a monolayer molybdenum disulfide with a modulation depth of close to 100%, and speed limited only by the fundamental pulse duration, is achieved thanks to the crystal symmetry and the deep subwavelength thickness of the sample.
Quantum noise is suppressed by a bound state in the continuum (BIC) approach, enabling a microlaser with narrow linewidth compared to other small lasers.
A terahertz phase modulator based on the switchable perturbation resonance in two-dimensional electron gas is demonstrated. Phase manipulation with precision ranging from 2° to 5° is obtained at frequencies in the range from 0.26 to 0.27 THz.
Extreme electromagnetic field confinement in polaritonic systems is demonstrated. The tight fields can excite magnetoplasmons and result in nonlocal phenomena.
A hybrid photonic–atomic device based on the integration of tapered nanoscale and mechanically suspended waveguides with hot vapour is reported, demonstrating a drastic reduction in absorption linewidth and improved vapour coherence time.
Quantum transport in fractal networks is experimentally investigated by performing continuous-time quantum walks in fractal photonic lattices. Contrarily to classical fractals, anomalous transport governed solely by the fractal dimension is observed.