An atomic object confinement apparatus comprising a plurality of electrodes and one or more quasi-direct-current (quasi-DC) circuits. The plurality of electrodes comprise a plurality of radio frequency (RF) rail electrodes arranged to define, at least in part, a periodic array of confinement segments. The plurality of RF rail electrodes are configured such that, when an oscillating voltage signal is applied thereto, the plurality of RF rail electrodes generate a pseudopotential in a form of an array of trapping regions configured to contain at least one atomic object within a respective trapping region of the array of trapping regions. The one or more quasi-direct-current (quasi-DC) circuits are arranged to generate a magnetic field having a selectable magnitude and a selectable direction, such that the generated magnetic field acts on at least one atomic object within the array of trapping regions.

Aspects of the present disclosure may include a method and/or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and/or operation of quantum information processing (QIP) systems, and more particularly, to various aspects of optical addressing systems configured to individually address multiple ions of a chain of ions trapped within an ion trap. In some aspects, the trapped ions have non-equidistant spacing.

Aspects of the present disclosure may include a method and/or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.

Aspects of the present disclosure may include a method and/or a system for identifying an ion chain having a plurality of trapped ions, selecting at least two non-consecutive trapped ions in the ion chain for implementing a qubit, applying at least a first Raman beam to shuttle at least one neighbor ion of the at least two non-consecutive trapped ions from a ground state to a metastable state, and applying at least a second Raman beam to one or more of the at least two non-consecutive trapped ions, after shuttling the at least one neighbor ion to the metastable state, to transition from a first manifold to a second manifold.

A single cell apparatus and method for single ion addressing are described herein. One apparatus includes a single cell configured to set a frequency, intensity, and a polarization of a laser, shutter the laser, align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation, and detect the light fluoresced from the ion.

A single cell apparatus and method for single ion addressing are described herein. One apparatus includes a single cell configured to set a frequency, intensity, and a polarization of a laser, shutter the laser, align the shuttered laser to an ion in an ion trap such that the ion fluoresces light and/or performs a quantum operation, and detect the light fluoresced from the ion.

In accordance with a method for individually addressing qubits in a set of qubits, a plurality of qubits is provided that each have two internal states representing a unit of quantum information. A transition between the two internal states of each qubit is caused by a two-photon Raman transition. Each of N ones of the qubits in the plurality of qubits are individually addressed using one of N pairs of laser beams, respectively, N being an integer greater than or equal to two. The laser beams in each of the N pairs have a frequency difference equal to a qubit transition frequency that represents a difference in frequency between the two internal states of the qubits. The laser beams in each pair of laser beams operate at different frequencies than the laser beams in every other pair of laser beams.

An ion trap is generally constructed as a linear Paul trap in which at least one charged particle is radially trapped with the aid of a quadrupole radio frequency field. The ion trip has a first chip and a second chip aligned with respect to each other, and the two chips are preferably structurally identical. Both chips have a front side, a reverse side, and a chip slot. The second chip is attached to the first chip such that a vertical projection onto a first-chip plane, along which the first chip extends, results in an ion trap slot. The first and second chips each have DC voltage electrode, a compensation electrode, and a high-frequency electrode, and each electrode is designed to receive a DC voltage, and preferably all of the electrodes are electrically insulated from one another.

A controlled environment chamber is provided. The controlled environment chamber includes a chamber housing and a window component that is secured to the chamber housing. The window component includes a window plate having a first surface that faces away from an interior of the controlled environment chamber and a second surface that faces toward the interior of the controlled environment chamber. The window plate comprises at least one signal manipulation element.