Double individual-addressing multi-beam Raman system

Patent metadata

Field	Value
Publication number	US-12500674-B2
Application number	US-202318446258-A
Country	US
Kind code	B2
Filing date	Aug 8, 2023
Priority date	Dec 7, 2021
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

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 a double individual-addressing multi-beam Raman system for use in QIP systems. A technique is described in which a first multi-channel modulator (MCM), a first telecentric zoom lens, and a first interleaver that form a first optical path of the Raman system that receives a first array of beams and adjusts the first array of beams to individually address atomic-based qubits in a chain from a first direction. Moreover, a second MCM, a second telecentric zoom lens, and a second interleaver form a second optical path of the Raman system that receives a second array of beams and adjusts the second arrays of beams to individually address the atomic-based qubits in the chain from a second direction different from the first direction.

First claim

What is claimed is:

1 . A Raman system for double individual-addressing of atomic-based qubits, the system comprising:
a first interleaver that forms with other optical components a first optical path of the Raman system, the first interleaver being configured to receive a first array of beams and to modify an order and a spacing of the beams in the first array of beams for each beam to individually address a respective atomic-based qubit in a chain from a first direction; and a second interleaver that forms with other optical components a second optical path of the Raman system, the second interleaver being configured to receive a second array of beams and to modify an order and a spacing of the beams in the second array of beams for each beam to individually address a respective atomic-based qubit in the chain from a second direction.

2 . The Raman system of claim 1 , wherein:
the first interleaver includes a first optical path and a second optical path having a same path length, the first optical path of the first interleaver having two mirrors and the second optical path of the first interleaver having a single mirror, and the second interleaver includes a first optical path and a second optical path having a same path length, the first optical path of the second interleaver having two mirrors and the second optical path of the second interleaver having a single mirror.

3 . The Raman system of claim 2 , wherein:
the first interleaver includes a first beamsplitter configured to combine an output of the first optical path of the first interleaver and an output of the second optical path of the first interleaver, and the second interleaver includes a second beamsplitter configured to combine an output of the first optical path of the second interleaver and an output of the second optical path of the second interleaver.

4 . The Raman system of claim 1 , wherein:
the first interleaver includes a first optical path and a second optical path having a same path length, the first optical path of the first interleaver having two mirrors and the second optical path of the first interleaver having two mirrors, and the second interleaver includes a first optical path and a second optical path having a same path length, the first optical path of the second interleaver having two mirrors and the second optical path of the second interleaver having two mirrors.

5 . The Raman system of claim 4 , wherein:
the first interleaver includes a first beam splitter configured to combine an output of the first optical path of the first interleaver and an output of the second optical path of the first interleaver, and the second interleaver includes a second beamsplitter configured to combine an output of the first optical path of the second interleaver and an output of the second optical path of the second interleaver.

6 . The Raman system of claim 1 , wherein:
the first interleaver is positioned in the first optical path of the Raman system after a first telecentric zoom lens that also forms the first optical path of the Raman system, and the second interleaver is positioned in the second optical path of the Raman system after a second telecentric zoom lens that also forms the second optical path of the Raman system.

7 . The Raman system of claim 1 , wherein:
the first array of beams includes left beams and right beams, the first interleaver is configured to modify the order of the beams in the first array of beams by alternating left beams and right beams, and the second array of beams includes left beams and right beams, the second interleaver is configured to modify the order of the beams in the second array of beams by alternating left beams and right beams.

8 . The Raman system of claim 7 , wherein:
the first interleaver is configured to modify the spacing of the beams in the first array of beams by having the spacing of the alternating left beams and right beams of the first array of beams be smaller than the spacing of the first array of beams before having the order modified, and the second interleaver is configured to modify the spacing of the beams in the second array of beams by having the spacing of the alternating left beams and right beams of the second array of beams be smaller than the spacing of the second array of beams before having the order modified.

9 . The Raman system of claim 7 , wherein:
the first interleaver is further configured to reverse the order of the right beams of the first array of beams before alternating the first beams and the second beams, and the second interleaver is further configured to reverse the order of the right beams of the first array of beams before alternating the first beams and the second beams.

10 . The Raman system of claim 1 , wherein:
the first array of beams includes left beams and right beams, the first interleaver is configured to modify the order of the beams in the first array of beams by alternating left beams and right beams that are uniformly spaced, and the second array of beams includes left beams and right beams, the second interleaver is configured to modify the order of the beams in the second array of beams by alternating left beams and right beams that are uniformly spaced.

11 . The Raman system of claim 1 , wherein:
each beam in the first array of beams is an elliptical beam, and each beam in the second array of beams is an elliptical beam.

12 . The Raman system of claim 11 , wherein each of the elliptical beams is a vertically elliptical beam.

13 . The Raman system of claim 12 , wherein each of the elliptical beams is a Gaussian beam.

14 . The Raman system of claim 1 , wherein the first direction for each beam of the first array of beams to individually address the respective atomic-based qubit in the chain is opposite to the second direction for each beam of the second array of beams to individually address the respective atomic-based qubit in the chain.

15 . The Raman system of claim 1 , wherein each of the atomic-based qubits in the chain is an ion.

16 . A method for double individual-addressing of atomic-based qubits in a Raman system, comprising:
receiving, by a first interleaver forming with other optical components a first optical path of the Raman system, a first array of beams and modifying an order and spacing of the beams in the first array of beams for each beam to individually address a respective atomic-based qubit in a chain from a first direction; and receiving, by a second interleaver forming with other optical components a second optical path of the Raman system, a second array of beams and modifying an order and spacing of the beams in the second array of beams for each beam to individually address a respective atomic-based qubit in the chain from a second direction.

17 . The method of claim 16 , wherein the first array of beams includes left beams and right beams, and the second array of beams includes left beams and right beams, the method further comprising:
modifying, by the first interleaver, the order of the beams in the first array of beams by alternating left beams and right beams; and modifying, by the second interleaver, the order of the beams in the second array of beams by alternating left beams and right beams.

18 . The method of claim 17 , further comprising:
modifying, by the first interleaver, the spacing of the beams in the first array of beams by having the spacing of the alternating left beams and right beams of the first array of beams be smaller than the spacing of the first array of beams bef

Assignees

• Ionq Inc

Inventors

• Pisenti Neal C
• Hudek Kai Makoto
• Wright Kenneth
• Liu Tan
• Angeley David
• Shah Nadir
• Kreikemeier Sarah Margaret

Classifications

• G06N10/40

  Physical realisations or architectures of quantum processors or components for manipulating qubits, e.g. qubit coupling or qubit control · CPC title

• H04B10/70 Primary

  Photonic quantum communication · CPC title

• G02F3/00 Primary

  Optical logic elements; Optical bistable devices · CPC title