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Meet Alvise Borgogni who joined the project:
The performance of a quantum computer is inherently limited by the lifetime of its physical components, the quantum bits ('qubits'). Quantum decoherence is inevitably induced by the interaction between these elements and their environment. It is therefore essential to design qubits that will offer some degree of protection against these error mechanisms.
One way to achieve this is by implementing superconducting circuits that have protected ground states, such as the 0/pi qubit and qubits protected by Cooper-pair pairing. During my postdoc funded by Robust SuperQ, I will focus on designing and fabricating exotic arrangements of superconducting elements to experimentally implement such qubits.
Superconducting circuit enabling the manipulation of a Schrödinger cat qubit
@N.Hoppenot/ENS Lyon
ABOUT
The RobustSuperQ project aims at accelerating French R&D on superconducting and hybrid qubits protected by construction against decoherence. It is part of a post-transmon strategy, alternative to surface code, in which the French teams are at the forefront. It brings together all of these teams around three complementary concepts: the Cat-code architecture, spin qubits implanted on superconducting circuits, and topologically protected superconducting qubits.
RobustSuperQ is a PEPR,
a priority programme for research and equipment, part of the French Quantum Plan
WHAT WE DO
Assembling a superconducting circuit in cavity
@N.Hoppenot/ENS Lyon
We accelerate the French R&D on robust superconducting and hybrid qubits protected against decoherence. The project is organized into work packages (WP)
- WP0: Bricks of components and methods for WP1, 2 and 3.
- WP1: Cat-qubits encoding information in quantum superpositions of coherent microwave states.
- WP2: Dopant Spin qubits, encoding information in electronic and nuclear spins.
- WP3: Development of new qubits with topological protection.
- WP4: Creation and modernization of two manufacturing platforms* for superconducting qubits, and project coordination.
*Platforms: The two technical poles in the field, Ile-de-France and Grenoble, will make a qualitative leap in terms of resources, via the creation at CEA-Université Paris-Saclay of a new dedicated platform, and the acquisition of fabrication and characterization tools in the two poles. The resources will be pooled and interoperable, and the synergy of know-how and associated processes will be maximized.