Robust Superconducting and hybrid Quantum bits
Latest News:
Angel Ibabe has joined the project at QCMX
My postdoctoral research within the RobustSuperQ project focuses on the experimental study of hybrid devices based on carbon nanotubes coupled to superconducting circuits, fabricated in the QCMX group. In particular, I investigate the hybridization of Andreev bound states (ABS) hosted in two Josephson junctions defined within a single nanotube. When the junctions are separated by a distance comparable to the superconducting coherence length, their ABS can couple to form an Andreev molecule. This project aims to establish whether such a system can function as a qubit, and to demonstrate intrinsic mechanisms of protection against decoherence by exploiting the nonlocal nature of the Andreev molecular wavefunction.
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 target project of the PEPR Quantum Technologies (priority programme for research & equipment),
part of the French National Quantum Strategy
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.