A5068384192- Quantum Information and Cryptography
- Photonic and Optical Devices
- 2D Materials and Applications
- Quantum optics and atomic interactions
- Plasmonic and Surface Plasmon Research
- Perovskite Materials and Applications
- Photorefractive and Nonlinear Optics
- Strong Light-Matter Interactions
- Advanced Memory and Neural Computing
- Advanced biosensing and bioanalysis techniques
- Neuroscience and Neural Engineering
- Nanowire Synthesis and Applications
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Random lasers and scattering media
- Quantum Computing Algorithms and Architecture
- Photonic Crystals and Applications
- Orbital Angular Momentum in Optics
- Near-Field Optical Microscopy
- Advanced Fiber Optic Sensors
- Quantum and electron transport phenomena
- Mechanical and Optical Resonators
University of California, San Diego
2018-2024
University of California System
2024
Abstract A key challenge in realizing practical quantum networks for long-distance communication involves robust entanglement between memory nodes connected by fibre optical infrastructure 1–3 . Here we demonstrate a two-node network composed of multi-qubit registers based on silicon-vacancy (SiV) centres nanophotonic diamond cavities integrated with telecommunication network. Remote is generated the cavity-enhanced interactions electron spin qubits SiVs and photons. Serial, heralded...
Robust, low-loss photonic packaging of on-chip nanophotonic circuits is a key enabling technology for the deployment integrated photonics in variety classical and quantum technologies including optical communications communications, sensing, transduction. To date, no process has been established that enables permanent, broadband, cryogenically compatible coupling with sub-dB losses from fibers to circuits. Here, we report technique reproducibly generating permanently packaged interface...
Active tunability of photonic resonances is great interest for various applications such as optical switching and modulation based on optoelectronic materials. Manipulation charged excitons in atomically thin transition metal dichalcogenides (TMDCs) like monolayer MoS2 offers an unexplored route diverse functionalities nanodevices. Here, we experimentally demonstrate the dynamic photochemical control crystal Fano by electrical tuning refractive index via trions without any chemical...
A key challenge in realizing practical quantum networks for long-distance communication involves robust entanglement between memory nodes connected via fiber optical infrastructure. Here, we demonstrate a two-node network composed of multi-qubit registers based on silicon-vacancy (SiV) centers nanophotonic diamond cavities integrated with telecommunication (telecom) network. Remote is generated the cavity-enhanced interactions SiV's electron spin qubits and photons. Serial, heralded...
To investigate chronic durability of transparent graphene electrodes fabricated on polyethylene terephthalate (PET) and SU-8 substrates for in vivo studies.We perform systematic accelerated aging tests to understand the reliability failure modes microelectrode arrays built PET substrates. We employ microelectrodes substrate experiments with transgenic mice.Our results show that work reliably after 30 days test performed at 87 °C, equivalent 960 lifetime. demonstrate stable recordings...
Owing to their unique electrical and optical properties, two-dimensional transition metal dichalcogenides have been extensively studied for potential applications in biosensing. However, simultaneous utilization of both properties has overlooked, yet it can offer enhanced accuracy detection versitility. Here, we demonstrate a dual-mode optoelectronic biosensor based on monolayer molybdenum disulfide (MoS2) capable producing readouts biomolecular signals. On single platform, the exhibits...
The valley degree of freedom that results from broken inversion symmetry in two-dimensional (2D) transition-metal dichalcogenides (TMDCs) has sparked a lot interest due to its huge potential information processing. In this experimental work, optically address the valley-polarized emission three-layer (3 L) thick WS 2 at room temperature, we employ SiN photonic crystal slab two sets holes square lattice supports directional circular dichroism engendered by delocalized guided mode resonances....
The optical response in two-dimensional transition-metal dichalcogenides (2D TMDCs) is dominated by excitons. lack of spatial inversion symmetry the hexagonal lattice within each TMDC layer leads to valley-dependent excitonic emission photoluminescence. Here, we demonstrate experimentally separation valley coherent into orthogonal directions through self-resonant exciton polaritons a free-standing three-layer (3L) WS2 waveguide. This was achieved patterning photonic crystal consisting square...
Practical quantum networks will require multi-qubit nodes. This in turn increase the complexity of photonic circuits needed to control each qubit and strategies multiplex memories. Integrated photonics operating at visible near-infrared (VNIR) wavelength range can provide solutions these needs. In this work, we realize a VNIR thin-film lithium niobate (TFLN) integrated platform with key components meet requirements, including low-loss couplers (<1 dB/facet), switches (>20 dB extinction),...
Monolayer transition metal dichalcogenides (TMDs) are essential to the scaling down of light-emitting devices nanoscale. But spatial manipulation their emission at deep subwavelength scale has remained challenging, limiting applications in compact directional lighting systems. Here, we present an experimental demonstration and azimuthally polarized excitonic from monolayer tungsten diselenide (WSe2) integrated with disulfide (WS2) circular gratings. For such nanoscale heterostructures, high...
Spatial dispersion of a photonic crystal manifests itself as an angle dependent optical response. Here, we use the emerging two-dimensional transition metal dichalcogenides (TMDCs) photon source to directly image spatial in reciprocal space. Excitonic emission from monolayer MoS2 is coupled delocalized Fano resonances supported by slab, recreating isofrequency contours far-field. This integration TMDCs and not only reveals band structure but also provides new route controllable directional...
We generate remote entanglement between spatially separate color-center based quantum nodes at rates up to 1 Hz. In addition, we demonstrate across a deployed 35km long fiber loop in the Boston urban area.
A key challenge in realizing long-distance quantum networks involves entanglement between memory nodes via existing fiber infrastructure. Here, we demonstrate a two-node network based on Silicon Vacancy defect centers diamond nanophotonic cavities integrated with metropolitan telecommunication [1].
We generate remote entanglement between spatially separate color-center based nanophotonic quantum network nodes. In addition, we demonstrate distribution across a 35 km long fiber loop deployed in the Boston urban area.
Practical quantum networks will require nodes consisting of many memory qubits. This in turn increase the complexity photonic circuits needed to control each qubit and strategies multiplex memories overcome inhomogeneous distribution their transition frequencies. Integrated photonics operating at visible near-infrared (VNIR) wavelength range, compatible with frequencies leading systems, can provide solutions these needs. In this work, we realize a VNIR thin-film lithium niobate (TFLN)...
Robust, low-loss photonic packaging of on-chip nanophotonic circuits is a key enabling technology for the deployment integrated photonics in variety classical and quantum technologies including optical communications communications, sensing, transduction. To date, no process has been established that enables permanent, broadband, cryogenically-compatible coupling with sub-dB losses from fibers to circuits. Here we report technique reproducibly generating permanently packaged interface...
We demonstrate unidirectional enhanced photoluminescence from a monolayer MoS2 via Fano resonances in dielectric photonic crystals. The can also be dynamic controlled by optical and electrical tuning of the refractive index.