US 12,737,657 B2 · Multi-qubit control with acousto-optic modulators

Abstract

Aspects of the present disclosure describe techniques for controlling quantum states of ions in an ion chain for a quantum operation. For example, a method is described that includes providing, from a first direction, a global optical beam to the ions in the ion chain, and providing, from a second direction different from the first direction, to each ion in a subset of the ions in the ion chain, a respective addressing optical beam. The method further includes dynamically controlling each of the addressing optical beams being provided by using a respective channel in a multi-channel acousto-optic modulator (AOM) to implement, with the ion chain, one or more quantum gates in a sequence of quantum gates of the quantum operation. Aspects of a quantum information processing (QIP) system that includes the multi-channel AOM for performing the method are also described.

Claims20

Dependent claims

A method of controlling quantum states of ions in an ion chain for a quantum operation to reduce errors, comprising:

trapping, via a plurality of electrodes, the ions in the ion chain;
propagating, from a first direction, a global optical beam to at least one ion in the ion chain;
propagating, from a second direction different from the first direction, respective addressing optical beams to each ion in a subset of the ions in the ion chain;
monitoring an accumulated phase shift in each of the ions in the subset of ions;
and
implementing one or more quantum gates for the quantum operation by independently modulating and controlling one or more of a frequency, a phase, or an amplitude of each of the addressing optical beams to correct for the accumulated phase shift in each ion associated with energy shifts of the ions.

3 more elements

Dependencies are inferred from the claim text.

Multi-qubit control with acousto-optic modulators

Life of this patent

Multi-qubit control with acousto-optic modulators

Life of this patent

Abstract

Claims20