(a) Schematic diagram of quantum computer based on two-dimensional atom arrays. A dipole trap laser is diffracted by a spatial light modulator to form tweezer arrays inside the vacuum glass cell. Each tweezer traps a single atom. One 2D acousto-optic deflector control a mobile tweezer to move the atom to form an atom pair with a closer distance. Two lasers excite the atom pair to Rydberg state which implement the controlled-phase two-qubit gate. Another Raman laser (not shown) excites single atoms to realize single-qubit gate. Quantum algorithm is running by a quantum complier which links the classical interface with the quantum registers. An electron-multiplied CCD camera records the results through atomic fluorescence.

(b) If qubits are individual addressed, the system works as a digital quantum processor.

(c) If all qubits are addressed by the same Rydberg lasers,  one can implement an analog quantum processor with its Hamiltonian controlled by the laser and atom parameters.