Quantum Hardware Database
Pasqal Fresnel
Pasqal's Fresnel processor uses neutral atoms held in place by precisely focused laser beams ('optical tweezers'), offering a uniquely reconfigurable architecture where the physical arrangement of qubits — and therefore their connectivity — can be programmed for each specific problem.
Qubit Count
100
Qubit Type
Neutral atom (rubidium atoms held in optical tweezers)
Architecture
Reconfigurable 2D and 3D atom arrays
Released
2023
Gate Error (2Q)
~1–3% per two-qubit gate
Coherence Time
Coherence times in the millisecond range — notably long for a gate-based platform
Operating Temp
Ultra-cold atoms (microkelvin range), held in room-temperature vacuum chamber via lasers
Cloud Access
Yes — Pasqal Cloud, AWS Braket
Company
Pasqal
Connectivity
Reconfigurable — programmable geometric arrangement of atoms determines connectivity
Key Features
- Reconfigurable atom arrangement allows custom connectivity per problem
- Notably long coherence times relative to gate speed
- Well-suited to simulating other quantum systems with similar geometric structure
- No need for individual wiring to each qubit, unlike superconducting approaches
Limitations
- Higher gate error rates than leading trapped-ion or superconducting systems
- Atom loss and reloading between runs adds operational overhead
Technical Notes
Neutral atom platforms like Fresnel are particularly well suited to quantum simulation tasks where the natural geometry of the problem (such as molecular structures or condensed matter physics models) can be directly mapped onto the physical arrangement of trapped atoms.