There have been a lot of announcements recently regarding new chips or new simulators that contain a record number of qubits.   We thought it would be useful to our readers to compile all the information into one handy table that you can see below. Note that the data shown for the hardware items are for physical qubits without any error correction.

As we see more announcements in the coming months, you should remember that not all qubits are created equal.  A design that has qubits with long coherence times, high gate fidelities, and large connectivities may provide far better results than one that has many more qubits without these characteristics.  Please refer to our Qubit Quality page for some data that compares various quality measures for a few different implementations.

The table below was compiled from publicly available sources as of the date listed at the bottom of this page.   Please let us know at if you see any corrections that are needed or new entries to add.

Company Type Technology Now Next Goal
Intel Gate Superconducting 49 TBD
Google Gate Superconducting 53/72 TBD
IBM Gate Superconducting 53 TBD
Rigetti Gate Superconducting 32 128
USTC (China) Gate Superconducting 10 20
IonQ Gate Ion Trap 11 79
IQOQI/Univ. Ulm/Univ. Innsbruck Gate Ion Trap 20 TBD
NSF STAQ Project Gate Ion Trap N/A ≥64
Intel Gate Spin 26 TBD
Silicon Quantum Computing Gate Spin N/A 10
CEA-Leti/INAC/Institut Néel Gate Spin N/A 100
Univ. of Wisconsin Gate Neutral Atoms 49 TBD
Harvard/MIT Quantum Simulator Rydberg Atoms 51 TBD
Univ. of Maryland / NIST Quantum Simulator Ion Trap 53 TBD
D-Wave Annealing Superconducting 2048 5000
iARPA QEO Research Program Annealing Superconducting N/A 100
NTT/Univ. of Tokyo/Japan NII Qtm Neural Network Photonic 2048 >20,000
Fujitsu Digital Annealer Classical 1024 8192
Alibaba/Univ. of Michigan Software Simulator Classical 144 N/A
Atos Software Simulator Classical 41 N/A
Black Brane Systems Software Simulator Classical 128 N/A
ETH Zurich Software Simulator Classical 45 N/A
Huawei – HiQ Cloud Service Software Simulator Classical 42-169 N/A
IBM Research Software Simulator Classical 56 N/A
Intel – qHiPSTER Software Simulator Classical 43 N/A
Microsoft – PC Software Simulator Classical 30 N/A
Microsoft – Azure Software Simulator Classical 40 N/A
ORNL/NASA/Univ of Illinois/Google Software Simulator Classical 49/121 N/A
Rigetti – Forest Software Simulator Classical 36 N/A
University of Chicago/Argonne National Lab Software Simulator Classical 61 N/A
University of Melbourne Software Simulator Classical 60 N/A
University of Oxford – QuEST Software Simulator Classical 38 N/A
USTC/Origin QC Software Simulator Classical 64 N/A

Updated April 2, 2020