Meet the Experts

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Mete Atatüre >

Professor | University of Cambridge

Prof. Atatüre is the scientific lead of the Quantum Optical Materials and Systems (QOMS) team at the University of Cambridge. His current research efforts include optical control of spin-photon interfaces in solids, development of nanoscale quantum sensors and investigations of novel quantum materials and devices. He is also a co-founder and CSO of QOMS quantum-tech spin out, Nu Quantum Ltd. Furthermore, he dedicates significant time to science communication and public engagement on the role of science in society, scientific integrity, and achieving diversity and equality in science. He held more than 200 plenary, keynote and invited talks, colloquia and departmental seminars, as well as three TEDx Talks on the topics of quantum physics, light, and science and diversity. 

In his research, Atatüre is using a wide set of attocube instruments, including three attoDRY1000 cryostats and one attoDRY2100, equipped with different magnet and vector magnet configurations, as well as attoAFM/CFM and attoCFM II.

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Sven Höfling >

Professor | University of Würzburg
Professor | University of St Andrews

Sven Höfling's research focusses on the fabrication and characterization of semiconductor nanostructures for optoelectronic applications as well as for basic physics studies of low dimensional photonic and electronic systems. In particular, his group is working on Epitaxy of Quantum Materials, Spin-photon interfaces, Fourier Transform Spectroscopy, Nanoelectronics, Nanophotonics, Nanotechnology Services, Optoelectronic Materials and Devices, Organic Photonics, Spectroscopy III/V, Topological Photonics and Polaritonics.

His group is extremely well connected with more than 30 scientific institutions and industrial partners worldwide. Sven Höfling is the coordinator of the ERC starting grant for "Unique Light-Matter Interactions with Two-Dimensional Materials", and of the BMBF project "Photon number resolving and dead-time-free RTD single photon detection (Photon-N)", as well as a member of the BMBF project "Q.Link.X", which investigates atoms, diamonds and quantum dots as candidates for quantum repeater devices.

In his research, Höfling is using an attoDRY2100-9T, and attoDRY800, and several sets of ANP low temperature nanpositioners.

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Atac Imamoglu >

Professor | ETH Zurich

Ataç Imamoglu has been dealing with quantum optical phenomena in solid-state physics since 1990, and he is renowned as one of the true pioneers in the Quantum Optics of quantum dots. His group demonstrated the first single photon source achieved with quantum dots, the usage of photon correlation spectroscopy for examining quantum dots and the Purcell effect on quantum dots. With his group at ETH Zurich, he is seeking to realize systems of strongly interacting photons, and currently they investigate quantum optics with transition metal dichalcogenides, interacting polaritons in two-​dimensional systems, accelerating polaritons with external electric and magnetic fields and optical investigation of electronic systems in TMD heterostructures.

Prof. Imamoglu has published over 250 articles in international journals, with more than 45,000 citations. He received the National Science Foundation Career Award in 1995, the David and Lucile Packard Fellowship in 1996, the TÜBİTAK prize for physics in 2001, the Wolfgang Paul Award of the Humboldt Foundation in 2002, the Muhammed Dahleh Award of UCSB in 2006, the Quantum Electronics Award of IEEE in 2009 and the Charles Townes Award of the Optical Society of America in 2010. In addition, he is a member of the Scientific Advisory Committee at the IMDEA Nanoscience Institute. He is a fellow of the American Physical Society, of the Optical Society of America and the Academia Europaea.

In his research, Imamoglu is using two attoDRY800 cryostats, LT-APO cryogenic objectives, several sets of ANP low temperature nanopositioners, as well as a customized mK confocal microscope.

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Maciej Koperski >

Assistant professor | National University of Singapore

Dr. Koperski is an expert in the study of optoelectronic devices based on atomically thin layers of transition metal dichalcogenides and magnetic layered materials. In particular, his research focuses on the explorations of novel phenomena related to magnetism in 2D, uncovering electronic properties of less understood materials (InSe) by combining optical and electrical investigations and devising novel methods of introducing light into other areas of low dimensional physics, such as optical detection of fluids in 2D channels. Some of his most important discoveries include "Single photon emitters in exfoliated WSe2 structures" (Nat. Nanotechnol. 2015) and "Resonantly hybridized excitons in moiré superlattices in van der Waals heterostructures" (Nature 2019). He works in close collaboration with the Nobel-prize winner Prof. Konstantin Novoselov, and with well-known scientists such as Prof. Vladimir Falko, Prof. Irinia Grigorieva, Dr. Roman Gorbachev, and Dr. Marek Potemski. With Prof. Novoselov, he recently co-authored a highly-cited review on "Magnetic 2D materials and heterostructures" (Nat. Nanotechnol. 2019), jointly with Prof. Morpurgo's Quantum Electronics Group.

In his research, Koperski is using an attoDRY1000 and an attoDRY2100 with attoCFM I insert, as well as an attoDRY800 with LT-APO and RT-SWD configurations.

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Claire Le Gall >

Principal Investigator | University of Cambridge

Dr. Le Gall’s research interests cover fundamental quantum phenomena in quantum optics and many-body physics as well as technological advances in quantum networks and photonic quantum computing. During her research career, Dr. Le Gall has contributed to the demonstration of squeezed light from single atom emission, entanglement generation between distant solid-state spins, and coherent rotation of nuclear collective states. Her research team currently studies semiconductor quantum dots and is currently focused on developing a quantum register architecture where nuclear collective states can be used as a quantum resource. Dr. Le Gall was the recipient of a Dorothy Hodgkin Royal Society Fellowship in 2018, and a Royal Society Enhancement Award in 2019. She is also a work-package leader of the FET-Open project Qluster.

She is also engaged in promoting women in science through acting as Cambridge Inspiring Woman mentor, and as speaker at the Week of Women in Science at Bath, UK in 2020.

In her research, Le Gall is using a wide set of attocube instruments, including one attoDRY1000 cryostat and two attoLIQUID1000, equipped with different magnet and vector magnet configurations, and several sets of ANP low temperature nanpositioners.

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Jonathan Noé >

Co-leader | Spin-off Project Qlibri

Dr. Hümmer and Dr. Noé started the spin-off project Qlibri to develop an ultra-stable cryogenic quantum optics platform and a highly sensitive microscope based on optical micro-resonators. Qlibri is based on the PhD thesis (2019) of Dr. Thomas Hümmer in the group of Prof. Hänsch at the LMU Munich and on work done in the group of Prof. David Hunger at Karlsruhe Institute of Technology (KIT). 

The heart of the products of Qlibri are open fiber-based micro-resonators to enhance the interaction of light with a large variety of nanoscale objects in a flexible way.  The goal is to reduce complexity and provide a turn-key measurement system to quickly enable scientists to perform micro-cavity quantum optics experiments at cryogenic temperatures. In addition to specialized optics and electronics a key feature of the Qlibri micro-cavities is the novel mechanical design, enabling ultra-stable operation even in closed-cycle cryostats.  

The Qlibri quantum optics platform is tested and specified for the attoDRY800 closed-cycle cryostat.

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Chao-Yang Lu >

Professor | University of Science and Technology of China
Adjunct Professor | New York University at Shanghai

Prof. Lu's research interests cover the foundations of quantum physics, multi-photon entanglement and optical quantum computing, adiabatic quantum computing with superconducting circuits, and large-scale atomic arrays for quantum technology. 

His work on quantum teleportation was selected by Physics World as “Breakthrough of the Year 2015”. His work on single-photon sources and optical quantum computing was selected by Optical Society of American (OSA) as one of “Optics in 2016”, “Optics in 2017”, and “Optics in 2019”. His work on photonic quantum computational advantage was selected by “UNESCO Netexplo 10 Digital Innovation 2020”.

He was named one of “China's Top 10 Scientific Stars” by Nature magazine in 2016, and was subsequently selected as a Fellow of the American Optical Society. Chaoyang Lu has published more than 100 articles in Reviews of Modern Physics, Science, Nature, Nature research journals, PNAS and PRL, generating more than 14,000 citations so far. He has been awarded ~40 fellowships, honors and awards in the last 15 years.

In his research, Lu is using two attoDRY1000 cryostats, an attoDRY2100 and several sets of ANP low temperature nanopositioners.

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Kin Fai Mak >

Associate Professor | Cornell University

Kin Fai Mak (associate professor of physics in the College of Arts and Sciences) and his wife Jie Shan (professor of applied and engineering physics in the College of Engineering) share a lab and joint research group focusing on new physical phenomena in atomically thin materials and their heterostructures. With their combined expertise, they are amongst the leaders in the field, studying a wide range of materials with very different properties. More specifically, the group is investigating 2D semiconductors, Berry curvature physics, non-centrosymmetric superconductivity, 2D magnetism, optical and electronic properties of graphene, and Terahertz time-domain spectroscopy. In 2010, while working in the group of Tony Heinz at Columbia University, Mak discovered "Atomically Thin MoS2 : A New Direct-Gap Semiconductor" (PRL), a paper which has received close to 12,000 citations up to date.

In their lab, Mak and Shen use an attoDRY2100-9T with CFM base kit, and an attoDRY1000-9T with an attoCFM I.

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Jean-Francois Roch >

Professor | École Normale Supérieure Paris-Saclay

During his scientific career, Jean-Francois Roch has contributed important findings in many areas such as cold trapped atoms, single photon sources, quantum key distribution, quantum repeaters, coupling of spins to superconducting resonators as well as optical cavities. One of the highlights was the experimental realization of Wheeler's delayed-choice Gedanken experiment beautifully proving the wave-particle duality of light with an almost ideal system of single photons  (Science, 2007). Now, his research group is primarily studying the physics of individual spins in diamond and exploring their applications to nanoscale sensing and imaging, quantum information processing  as well as bio-imaging. Jean-Francois Roch has been one of the true pioneers in the field of nitrogen-vacancy based single spin nanomagnetry, and more recently has successfully extended the applicability of such quantum sensors also to an extremely sensitive and all optical readout of phase transitions under high pressure. Up to now, he has published more than 150 articles in international journals.

In his research, Roch is using an attoLIQUID1000-0.5T-0.5T-0.5T with attoAFM/CFM, and attoDRY2100-0.5T-0.5T-0.5T with a customized insert for high pressure experiments, and several sets of ANP low temperature nanopositioners as well as several LT-APO cryogenic objectives.

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Pascale Senellart >

Associate Professor | Ecole Polytechnique, Palaiseau
Senior CNRS Researcher | C2N Center for Nanoscience and Nanotechnology

Pascale Senellart‘s research centers around experiments on quantum optics and quantum information processing with semiconductor quantum dots, solid state cavity quantum electrodynamics, nanotechnology, study of decoherence mechanisms, polariton condensation in photonic microstructures, plasmonic antennas and optomechanics. In 2008, she invented a sophisticated new cryogenic optical lithography technique to fully control the coupling between a quantum dot to a microcavity, which has built the foundation for the deterministic realization of near optimal single photon sources of unprecedented efficiency. Her group now focuses on the applications of single-photon sources in quantum computing and quantum communications, and continues to develop key devices such as sources of many-entangled photons and non-linear gates.

In her research, Senellart is using an attoDRY1000 with a customized attoCFM I confocal microscope optimized for her special LT-lithography incl. closed loop scanning.

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Niccolo Somaschi >

President & CTO | Quandela

Dr. Somaschi's main expertise is related to the development and study quantum light emitters based on semiconductors quantum dots embedded in micropillar cavities. In 2016 he published a seminal paper on "Near-optimal single-photon sources in the solid state" (Nature Photonics), which reported on the first electrically controlled and bright quantum dot single photons sources with near-unity indistinguishability and purity. In addition, the devices were 20 times brighter than any source of equal quality. 

This paper and previous work in the group built the foundation for the start-up Quandela, created to commercialize quantum dot based light sources and opto-electronic modules to boost the development of quantum computing and quantum communication platforms using photonic qubits. The young company puts a compact digital NISQ platform within reach for first practical applications in quantum computing. Dr. Somaschi is a co-founder of Quandela, and serves as President & CTO of the company.

Quandela and attocube are closely collaborating, and Quandela is already offering the integration of their highly efficient solid-state sources eDelight into the attoDRY800 cryo-optical table with LT-APO cryogenic objective and nanopositioners for ready-to-use fiber coupled single photon sources.

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Bernhard Urbaszek >

Director of Research CNRS | INSA Toulouse

Bernhard Urbaszek's current research interests are semiconductor spintronics, nuclear spin effects, quantum optics, and transition metal dichalcogenides. With his strong expertise in spectrosopy and photoluminescence techniques, he is adressing many of the key hot topics in 2D materials research, helping to pave the way for optoelectronics and valleytronics applications. He has co-authored more than 150 papers in international journals, and 5 book chapters, and close to 10,000 citations. He is the principal investigator of the ERC project OptoDNPcontrol (2013-2018) and coordinator of ANR projects (2D-van-der-Waals–Spin) and Marie Curie ITN nodes (SpinNano; 4Photon).

In his research, Urbaszek is using an attoDRY1000-9T, and attoDRY1000-5T-2T-2T, and an attoDRY700. In addition, he has been using attocube nanopositioners since 2001 in numerous projects and more recently different Cryogenic Compatible Apochromatic High NA Objectives.

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Samarth Vadia >

Researcher | Ludwigs-Maximilians-University Munich

Vadia’s research interest lies in the area of quantum optics, and he currently focusses on enabling light-matter interactions with two-dimensional semiconductor TMDs at cryogenic temperatures. He developed a modular open cavity platform that is spectrally- and spatially-tunable and simultaneously achieve high finesse / Q-factor. Subsequently, he demonstrated exciton-polaritons in monolayer TMDs. Previously, he worked on cold-atom based quantum simulations in the group of Prof. Wolfgang Ketterle at MIT (Boston). He held a Marie-Curie Fellowship from the European Commission for his graduate work. 

In his research, Vadia uses an attoDRY800 and a special configuration of ANP low temperature nanopositioners optimized for high-finesse cavities.

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Richard Warburton >

Professor | University of Basel

Warburton's research background is in semiconductor physics, in particular the optics of semiconductor heterostructures and nanostructures. He has worked on the optical properties of single quantum dots, including techniques for initializing, manipulating and reading out single spin qubits, and the mechanisms that limit the electron-spin and hole-spin coherence. He designed and realised the first open access, low-temperature compatible, free-space coupled, tunable micro-cavity. His Nano-Photonics Group now focusses on semiconductor-based quantum optics, diamond photonics, optically-active 2D layers, tunable micro-cavites for solid-state based cavity-QED, and superconductors for single-photon detection.

In his research, Warburton is using an attoDRY800 cryo-optical table, as well as several sets of ANP cryogenic nanopositioners as well as LT-APO cryogenic objectives.

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Xiadong Xu >

Professor | University of Washington

Professor Xu’s low dimensional quantum optoelectronic research group is interested in understanding the optical, electronic, and quantum properties of novel solid state nanostructures by nanoscale device design, optical spectroscopy and electrical transport. Some of his group's most recent discoveries include the “Optical Generation of Excitonic Valley Coherence in Monolayer WSe2” (Nature Nano. 2013), "Observation of long-lived interlayer excitons in monolayer MoSe2–WSe2 heterostructures" (Nat.Comm. 2015), "Layer-dependent ferromagnetism in a van der Waals crystal down to the monolayer limit" (Nature 2017) and "Signatures of moiré-trapped valley excitons in MoSe2/WSe2 heterobilayers" (Nature 2019). These papers all have had a high impact on the community, and have helped to pave the way for potential new applications in the investigation of many-body excitonic states, spin/valleytronics, optoelectronics (such as 2D lasers, LEDs, photovoltaic devices), magnetoelectronics and photonics, and interface phenomena. The group continues to be at the forefront of advancing the knowledge on the extremely versatile family of 2D materials and heterostructures with fascinating properties.

In his research, Xu is using an attoDRY2100-9T with an attoCFM platform.

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Norman Yao >

Professor | University of California, Berkeley

Prof. Yao's research lies at the interface between atomic, molecular and optical physics, condensed matter, and quantum information science. In recent years, the synergy between these fields has been strengthened by remarkable experimental progress that has made it possible to assemble complex, strongly interacting, quantum many-body systems from individual atoms, ions, molecules, and photons. These advances have opened the door to realizing non-equilibrium phases of matter, to understanding the dynamics of quantum thermalization (and of its failure), and to measuring the intrinsic properties of topological phases. Dialogue between theory and experiment is especially crucial to addressing these questions and his group employs a variety of theoretical, numerical, and experimental tools.

In his research, Yao uses an attoDRY2100-1T-1T-1T, and attoDRY800, LT-APO cryogenic objectives and ANP low temperature nanopositioners.


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Alexander Högele >

Professor | Ludwigs-Maximilians-University Munich

Alexander Högele's research interests focus on quantum optical phenomena in nanoscale condensed matter systems such as quantum dots, carbon nanotubes, layered semiconductors and van der Waals heterostructures. He has pioneered resonant laser spectroscopy of semiconductor quantum dots and the notion of quantum light emission from carbon nanotubes. His current research combines expertise in material synthesis, nanofabrication and optical spectroscopy in extreme environments (ultra-low temperatures down to 20 mK or high magnetic fields of up to
10 Tesla), and received support from the European Research Council (ERC Starting Grant in 2013 and ERC Consolidator Grant in 2017). Recently, Alexander Högele has co-initiated with an ERC Proof of Concept Grant in 2019 the qlibri project, a recent start-up at LMU Munich working towards commercialization of cavity-enhanced microscopy. 

In his research, Högele uses an attoDRY1000, an attoDRY800, and several sets of ANP low temperature nanopositioners and scanners for wide-field microscopy and confocal spectroscopy.

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Khaled Karraï

Scientific Director and co-founder | attocube systems 
Professor | Ludwig Maximilian University of Munich

Prof. Karraï´s expertise comprises ultra-precision positioning, scanning probe microscopy, interferometric sensing, and cryogenics. His main contributions includes pioneering the field of magneto-optics of high-Tc superconductors, developing cryogenic scanning near-field optical microscopy and inventing the now-widely-used tuning-fork tip sample distance sensing for AFM topographic imaging. He pioneered resonant high-spectral resolution and spatial laser spectroscopy techniques of single semiconductor quantum dots, which opened the path to quantum optics of quantum dots-based systems. He also pioneered the first intrinsic laser cooling of micro-mechanical and nano-mechanical systems, opening the path to quantum ground-state cooling of macroscopic systems.

The key technology basis of his scientific work are the inventions he developed on ultra-high precision positioning instrumentation adapted to operate under cryogenic and high magnetic field environment. Karraï authored over 180 publications and holds over 16 patents, a number of which are key to attocube’s business.