Table 1 Examples of gate-based approaches for developing quantum computers
From: Quantum technologies in the telecommunications industry
Superconducting | Spin | Topological | Ion Trap | Neutral atoms | Photonics |
|---|---|---|---|---|---|
Superpositions of currents flowing in superconductors | Qubits encoded in the spin degree of freedom (e.g electrons confined in quantum dots, NV centers, nuclear spin in NMR or impurities embedded in a substrate) | Topological quasi-particles (e.g., Majorana particles) | Ions trapped in electric fields (vacuum and lasers manipulate quantum states) | Atoms trapped in magnetic or optical fields (vacuum and lasers mani-pulate quantum states) | Qubits encoded in quantum states of photons |
Players | |||||
IBM | Intel | Microsoft | IonQ | Pasqal | Psi Quantum |
Rigetti | Quantum Brilliance | Honeywell | ColdQuanta | Xanadu | |
SpinQ | AQT | QuERA | ORCA | ||
Alibaba | Quandela | ||||
QuiX |