Rydberg atoms
Atoms are cooled down by a combination of lasers into their ground state in a fully loaded array, at a temperature lower than 100 micro Kelvins, below the recoil energy. They are detected by fluorescence (this is a picture from a real setup).
Laser pulse (0.5 micro second) bringing individual atoms – control qubit – from ground state to excited Rydberg state, and down.
Laser pulse addressing the target qubit, to execute a CNOT gate

Thanks to sophisticated laser controls, neutral atoms are manipulated individually and arranged in arbitrary 2D and 3D configurations with micrometer scale spacing.

Strong interactions are generated on demand between atoms brought into highly excited states called Rydberg states. These interactions can be switched on and off with 12 orders of magnitude extinction within a highly connected pattern, and are at the heart of Quantum Information Processing with this state of matter.

Long coherence times make it possible to run deep quantum algorithms on PASQAL’s software stack.

A Programmable Quantum Simulator

Classical computers are unable to model atomic systems without compromising on either calculation speed or accuracy.

PASQAL’s technology makes it possible for the artificial arrays of individual neutral atoms that are generated on demand to simulate complex materials beyond the limits of classical computers, with tens of qubits only. Quantum simulation is one of the very first short term applications of quantum computing.

PASQAL is also able to implement hybrid optimization algorithms to tackle combinatorial complexity for applications such as electricity distribution and transport or asset liability management in finance.

FASTER – Unique quantum algorithms, a brand new software stack from hardware to application layers
GREENER – Less energy consumed per task, smaller footprint


Design new materials such as Perovskites for solar cells 50% more efficient



Make fertilizer production energy efficient, reduce CO2 emissions



Accelerate drug discovery pipelines and enable personalized medicine



Bring superconductors out of the labs for mobility and energy transmission



Reduce Value at Risk in a portfolio of financial assets

Decades of R&D have brought the manipulation of neutral atoms to technological maturity. Several Nobel prizes have been awarded in the field, from Claude Cohen-Tannoudji to Steve Chu, Wolfgang Ketterle or Serge Haroche among others. The most spectacular manifestations of Quantum Physics have been achieved with these technologies such as Bose-Einstein Condensation and matter-wave interferometry.

Now is the time for Engineering these scientific achievements. Atomic clocks and quantum sensors such as gravimeters are manufactured and commercialized by PASQAL’s strategic partner Muquans. PASQAL builds on this legacy and groundbreaking research to build Quantum Computers and Simulators.