Quantum Hardware Database
D-Wave Advantage2
D-Wave Advantage2 is the latest generation of D-Wave's specialized quantum annealing hardware, a fundamentally different architecture from the gate-based processors that dominate this database, purpose-built for solving optimization problems via quantum annealing rather than running general quantum algorithms.
Qubit Count
4,400
Qubit Type
Superconducting flux qubits (quantum annealer)
Architecture
Zephyr topology — higher connectivity than previous D-Wave generations
Released
2024
Gate Error (2Q)
Not applicable — annealers don't use discrete gates the way gate-based processors do
Coherence Time
Not the primary relevant metric for annealing-based architectures
Operating Temp
~15 millikelvin
Cloud Access
Yes — D-Wave Leap cloud platform
Company
D-Wave Systems
Connectivity
Each qubit connects to up to 20 neighbors in the Zephyr topology
Key Features
- Thousands of qubits — far exceeding gate-based processor qubit counts, though not directly comparable
- Improved Zephyr connectivity topology over previous Pegasus-generation hardware
- Purpose-built for combinatorial optimization problems
- Longest continuously commercially available quantum computing platform, dating back to 2011
Limitations
- Cannot run general-purpose gate-based quantum algorithms like Shor's or Grover's
- Whether quantum annealing provides genuine advantage over best classical optimization heuristics remains actively debated
- Qubit count is not directly comparable to gate-based processor qubit counts due to the fundamentally different computational model
Technical Notes
D-Wave's annealing architecture implements a physical realization of adiabatic quantum computation, encoding optimization problems directly into the energy landscape of a superconducting qubit network rather than executing discrete gate sequences — a different paradigm covered in our Algorithms Database entry on adiabatic quantum computation.