Superconducting quantum circuits

Our research group explores novel superconducting quantum circuits for fundamental physics and quantum information applications.

State superpositions, entanglement and complementarity define a novel quantum logic which can be harnessed for information processing, raising great hopes for applications.

Serge Haroche and Jean-Michel Raimond

About SQC

We are Institut Néel's superconducting quantum circuits laboratory and quantum computing hardware facility, based in the French Alpes, at the heart of Grenoble's scientific polygon.

Next generation superconducting qubits

We aim to develop the next generation superconducting qubits with record coherence times and superior read-out fidelity, and to scale-up our technology to intermediate sizes.

Challenge the understanding of quantum mechanics

Besides exploring these novel circuits, we use them to perform quantum simulation of strongly interacting many-body physics that challenge the current understanding of quantum mechanics.

State-of-the-art quantum-limited amplifiers

Moreover, we build state-of-the-art quantum-limited amplifiers for the readout of quantum bits, the detection of quantum microwaves and quantum sensing.

Technical facilities at the Néel Institute

These advanced experiments rely on nanofabrication, microwave measurement in cryogenic conditions, and very low noise electronics. We are working at the Néel Institute in the heart of the scientific polygon in Grenoble and we enjoy the strong support of local technical facilities. Our group is involved in many national and international collaborations.

Frequently Asked Questions

You have questions?
We have answers.

What is Quantum physics about?

Quantum physics, also known as quantum mechanics, is a fundamental branch of physics that deals with the behavior of matter and energy that apply at the smallest scales of the universe. It provides a theoretical framework for understanding the behavior of particles at the quantum level, which is typically described as the behavior of particles at atomic and subatomic scales but quite surprisingly, it also describes the behavior of emergent degrees of freedom in macroscopic electrical circuits such as the ones that we study in our research. Quantum physics has been incredibly successful and has led to the development of numerous technologies, including transistors, lasers, and MRI machines. It has also opened up new frontiers in fields like quantum computing, quantum cryptography, and quantum teleportation, with the potential to revolutionize information processing and secure communication.

What are superconducting quantum circuits?

Superconducting quantum circuits are electrical microwave circuits made out of a capacitor, inductors and Josephson junctions that are operated in the quantum limit (high vacuum, extremely low temperature and isolation from electromagnetic noise). Cryogenic cooling systems, such as dilution refrigerators, are used to maintain these working conditions, allowing the superconducting materials to exhibit their unique properties. These circuits can be engineered at will to create artificial quantum systems that can be manipulated to perform quantum computations, quantum-limited amplifiers, or novel materials at the frontier of our understanding of physics.

What is a Qubit and what is a Quantum computer?

A qubit, short for "quantum bit", is the fundamental unit of information in quantum computing. It is the quantum analog of a classical bit (0 or 1) and serves as the building block for quantum computers. Unlike classical bits, which can only exist in one of two states (0 or 1), qubits can exist in a superposition of both states simultaneously, thanks to the principles of quantum mechanics. This superposition property is one of the key features that make quantum computing so powerful and different from classical computing.
A quantum computer is a type of computer that uses qubits to perform calculations and solve problems. It leverages the principles of quantum mechanics to process and manipulate information in fundamentally different ways than classical computers by exploiting quantum superposition and entanglement. Quantum computers are believed to have the potential to outperform classical computers for certain specialized problems, particularly those involving complex simulations, cryptography, optimization, and searching large databases.

What does CNRS or Néel Institute stand for?

CNRS (Centre National de la Recherche Scientifique) is the French National Center for Scientific Research. It is the largest fundamental research organization in France and one of the largest in Europe. CNRS is a public research institution that operates under the authority of the French Ministry of Higher Education, Research, and Innovation. Its mission is to conduct research across various scientific disciplines and promote scientific advancements.
The Néel Institute (Institut Néel) is a CNRS research institute, specializing in condensed matter physics. It is located in Grenoble, France, and is named after the renowned French physicist Louis Néel, who was awarded the Nobel Prize in Physics in 1970 for his work on magnetism.

How can I work in Quantum technologies?

Working in quantum technologies can be an exciting and rewarding career path, as this field is at the forefront of scientific and technological advancements. Most careers in quantum technologies require at least a Master degree in a relevant field of science or engineering. Common fields include physics, electrical engineering, computer science, materials science, and quantum information science, see for instance the QIQE master.

Quantum technologies are an interdisciplinary field encompassing physics, nanofabrication, electronics, cryogeny, software development, so a diverse skill set and the ability to work across disciplines can be highly valuable.

How can I apply for a PhD or Postdoc position?

Browse our website, find a topic that you like and contact us with your CV and cover letter.