Ultrafast detector of rydberg atoms

A quantum computer, comprising:

• an acousto-optical deflector configured to, during operation of the quantum computer:
• generate an ensemble of optical traps for trapping atomic qubits, the ensemble of traps being arranged to form:
• a detection region;
• and
• a computational region;
• and
• move an atomic qubit from the computational region to the detection region;
• a first laser and a second laser configured to perform two-photon entanglement gates between atomic qubits, wherein the second laser is further configured to illuminate the ensemble of optical traps;
• and
• a photosensor configured to determine a state of the atomic qubit.

A method of reading out states of atomic qubits, the method comprising:

• generating an ensemble of optical traps, the ensemble of optical traps comprising:
• a detection region;
• and
• a computation region;
• trapping an ensemble of atoms in the detection region, wherein:
• atoms of the ensemble of atoms are excitable to a Rydberg state having a blockade radius, and
• atoms of the ensemble of atoms are disposed within the blockade radius of another atom of the ensemble of atoms,
• trapping atomic qubits in the computation region, an atomic qubit being an atom that is excitable to the Rydberg state;
• entangling the atomic qubits into a collective state in the computation region;
• moving an atomic qubit from the computation region to the detection region;
• determining the collective state of the atomic qubits;
• and
• moving the atomic qubit from the detection region to the computation region.