[av_heading tag=’h2′ padding=’10’ heading=’Working Group 1′ color=” style=” custom_font=” size=” subheading_active=” subheading_size=’15’ custom_class=”][/av_heading]
[av_two_third first min_height=” vertical_alignment=” space=” custom_margin=” margin=’0px’ padding=’0px’ border=” border_color=” radius=’0px’ background_color=” src=” background_position=’top left’ background_repeat=’no-repeat’ animation=”]
[av_textblock size=” font_color=” color=”]
The members of working group 1 (WG1) are focusing on the generation, detection and storage of quantum states of light at the nanoscale. We wish to combine the latest advances in nano-photonics with quantum-inspired applications. Important themes include:
[/av_textblock]
[/av_two_third]
[av_two_third first min_height=” vertical_alignment=” space=” custom_margin=” margin=’0px’ padding=’0px’ border=” border_color=” radius=’0px’ background_color=” src=” background_position=’top left’ background_repeat=’no-repeat’ animation=”]
[av_textblock size=” font_color=” color=”]
- Single quantum emitters (quantum dots, colour centers and organic molecules) embedded in nanoscale structures for enhanced collection efficiencies, integration in optical circuits or single-photon nonlinearities.
- Efficient single-photon detectors based on superconducting nanostructures, with an emphasis on integrating them in optical circuits.
- Study of new nanomaterials, metamaterials and quantum plasmonics for generating and manipulating nonclassical light.
- Quantum memories based on nanoscale structures.
[/av_textblock]
[/av_two_third]
[av_one_third min_height=” vertical_alignment=” space=” custom_margin=” margin=’0px’ padding=’0px’ border=” border_color=” radius=’0px’ background_color=” src=” background_position=’top left’ background_repeat=’no-repeat’ animation=”]
[av_icon_box position=’top’ boxed=” icon=’ue80a’ font=’entypo-fontello’ title=” link=” linktarget=” linkelement=” font_color=” custom_title=” custom_content=” color=” custom_bg=” custom_font=” custom_border=”]
Christophe Couteau
WG1 Leader
[/av_one_third][av_textblock size=” font_color=” color=”]
Our goal is to connect WG1 researchers through events (meetings, training school) to stimulate collaborations and produce concrete outcomes such as short-term scientific missions, joint publications, review papers, patents, workshops and project proposals.
WG1 is also the most-application oriented working group of this Action, and an emphasis is put on involving industries in our events.
[/av_textblock]
[av_one_full first min_height=” vertical_alignment=” space=” custom_margin=” margin=’0px’ padding=’0px’ border=” border_color=” radius=’0px’ background_color=” src=” background_position=’top left’ background_repeat=’no-repeat’ animation=”]
[av_table purpose=’tabular’ pricing_table_design=’avia_pricing_default’ pricing_hidden_cells=” caption=’Matrix WG 1′ responsive_styling=’avia_responsive_table’]
[av_row row_style=’avia-heading-row’][av_cell col_style=”]TOPICS[/av_cell][av_cell col_style=”]SUPERCONDUCTING
DETECTORS PHYSICS
AND PERFORMANCE
[/av_cell][av_cell col_style=”]SOURCES[/av_cell][av_cell col_style=”]Processing/memories/
interfaces/applications[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]MATERIALS &
SYSTEMS
[/av_cell][av_cell col_style=”]– Superconducting nanowire single-photo detectors (meanders, nanodetectors)
– NbN, NbTiN, WSi, MoSi, YBCO
– Alternative substrates
– Nano-fabrication
– Waveguide detectors
[/av_cell][av_cell col_style=”]– Semiconductor quantum dots
– Organic molecules
– SPDC/SFWM
– Color centres in diamond
– Rare earth ion doped crystals
– Trapped atoms
– Electrical pumping of quantum dots
[/av_cell][av_cell col_style=”]– Tapered optical fibers with a nanofiber waist and >99% transmission
– Tunable Whispering-Gallery-Mode (WGM) resonators with Q > 10e8
– Nonlinear waveguides (PPLN, PPKTP)
[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]THEORY &
MODELS[/av_cell][av_cell col_style=”]– Superconductivity in nanostructures
– Finite difference time-domain simulation
– Numerical simulations of the detection mechanism
– Conventional and non-conventional superconductors
[/av_cell][av_cell col_style=”]– Finite difference time-domain simulation
– Optical Bloch equations
– Jaynes-Cummings models
– Density functional theory
– Fermi’s Golden Rule calculations
– Density matrix approach for coupling with reservoir
[/av_cell][av_cell col_style=”]– Semi-classical description of (arrays of) multi-level atoms with optical nearfields
– Full quantum description of the interaction of multi-level atoms with WGM resonator modes
[/av_cell][/av_row]
[av_row row_style=”][av_cell col_style=”]EXPERIMENTS[/av_cell][av_cell col_style=”]– Multi-photon excitations
– Optical, electrical, temperature & magnetic field studies at < 1 K
– High-temperature operation
– Multilayers and novel geometries
[/av_cell][av_cell col_style=”]Confocal microscopy
– Correlation function measurements
– Quantum interference
– Low-temperature experiments
– Spectral and spatial modes control
– Electrical pumping
[/av_cell][av_cell col_style=”]– Coupling of sources to waveguide devices, open microcavities and nano-cavities
– Cold cesium atoms trapped and interfaced
via nanofiber-guided light
– CQED with single Rubidium atoms coupled
to WGM resonators
– Frequency conversion
– Interfacing rare-earth-ion doped quantum
memories with single-photon sources
– Quantum random number generation with
nanoscale devices
– Feasibility of free-space/satellite QKD with
nanoscale sources and detectors
[/av_cell][/av_row]
[/av_table]
[/av_one_full]