公开(公告)号：US20210382210A1

公开(公告)日：2021-12-09

申请号：US17342012

申请日：2021-06-08

申请人： IonQ, Inc. ,  Duke University

发明人： Kenneth WRIGHT ,  Jason Madjdi AMINI ,  Jungsang KIM

IPC分类号： G02B5/10 ,  G21K5/00

摘要： Aspects of the present disclosure describe techniques for using a parabolic Cassegrain-type reflector for ablation. For example, a system for ablation loading of a trap is described that includes a reflector having a hole aligned with a loading aperture of the trap, and an atomic source positioned at a focal point of the reflector, where one or more laser beams are reflected from a reflective front side of the reflector and focused on a surface of the atomic source to produce an atomic plume, and the atomic plume once produced passing through the hole in the reflector and through a loading aperture of the trap for loading the trap. A method for ablation loading of a trap within a chamber in a trapped ion system is also described.

公开(公告)号：US20210374593A1

公开(公告)日：2021-12-02

申请号：US17313671

申请日：2021-05-06

申请人： IONQ, INC. ,  University of Maryland

发明人： Pradeep Niroula ,  Yunseong Nam

IPC分类号： G06N10/00 ,  G06F9/30

摘要： A method of determining a pattern in a sequence of bits using a quantum computing system includes setting a first register of a quantum processor in a superposition of a plurality of string index states, encoding a bit string in a second register of the quantum processor, encoding a bit pattern in a third register of the quantum processor, circularly shifting qubits of the second register conditioned on the first register, amplifying an amplitude of a state combined with the first register in which the circularly shifted qubits of the second register matches qubits of the third register, measuring an amplitude of the first register and determining a string index state of the plurality of string index states associated with the amplified state, and outputting, by use of a classical computer, a string index associated with the first register in the measured state.

公开(公告)号：US11157826B2

公开(公告)日：2021-10-26

申请号：US16433950

申请日：2019-06-06

申请人： University of Maryland, College Park ,  IonQ, Inc.

发明人： Caroline Figgatt ,  Aaron Ostrander ,  Norbert M. Linke ,  Kevin A. Landsman ,  Daiwei Zhu ,  Dmitri Maslov ,  Christopher Monroe

IPC分类号： G06N10/00 ,  G06F7/501

摘要： The disclosure describes various aspects related to enabling effective multi-qubit operations, and more specifically, to techniques for enabling parallel multi-qubit operations on a universal ion trap quantum computer. In an aspect, a method of performing quantum operations in an ion trap quantum computer or trapped-ion quantum system includes implementing at least two parallel gates of a quantum circuit, each of the at least two parallel gates is a multi-qubit gate, each of the at least two parallel gates is implemented using a different set of ions of a plurality of ions in a ion trap, and the plurality of ions includes four or more ions. The method further includes simultaneously performing operations on the at least two parallel gates as part of the quantum operations. A trapped-ion quantum system and a computer-readable storage medium corresponding to the method described above are also disclosed.

公开(公告)号：US11152925B2

公开(公告)日：2021-10-19

申请号：US16990108

申请日：2020-08-11

申请人： IONQ, INC.

发明人： Shantanu Debnath ,  Jason M. Amini ,  Jwo-Sy Chen ,  Neal Pisenti

IPC分类号： G06N99/00 ,  H03K3/38 ,  G06N10/00 ,  H03K19/195

摘要： A method of performing a computational process using a quantum computer includes generating a laser pulse sequence comprising a plurality of laser pulse segments used to perform an entangling gate operation on a first trapped ion and a second trapped ion of a plurality of trapped ions that are aligned in a first direction, each of the trapped ions having two frequency-separated states defining a qubit, and applying the generated laser pulse sequence to the first and second trapped ions. Each of the plurality of laser pulse segments has a pulse shape with ramps formed using a spline at a start and an end of each of the plurality of laser pulse segments.

公开(公告)号：US20210303282A1

公开(公告)日：2021-09-30

申请号：US16828233

申请日：2020-03-24

申请人： IonQ, Inc.

发明人： Vandiver Chaplin ,  Jason Amini

IPC分类号： G06F8/41 ,  G06N10/00

摘要： Systems and techniques are provided for pulse generation. A classical computing device may receive a program source code including quantum operations. The program source code may be compiled into a compiled program including the one or more quantum operations. Pulse shapes that a pulse shape library indicates corresponds to each of the quantum operations may be determined. Pulse instructions based on the one or more pulse shapes that the pulse shape library indicates corresponds to each of the quantum operations may be generated. Binary format instructions may be generated based on the pulse instructions. The binary format instruction may encode the pulse instructions in binary packets using a binary code of a field programmable gate array (FPGA) of a quantum computing device.

公开(公告)号：US11087232B2

公开(公告)日：2021-08-10

申请号：US16038484

申请日：2018-07-18

申请人： IonQ, Inc.

发明人： Andrew Maps Ducore ,  Matthew Joseph Keesan ,  Yunseong Nam ,  Omar Shehab

IPC分类号： G06N10/00 ,  G06F9/48 ,  G06F15/80 ,  G06F11/30 ,  G06F9/50

摘要： Technologies are described herein to implement quantum hybrid computations. Embodiments include receiving a hybrid program, assigning respective functions corresponding to the hybrid program to either of CPU processing or QPU processing, scheduling processing for the respective functions, initiating execution of the hybrid program, and collating results of the execution of the classical-quantum hybrid program.

公开(公告)号：US20210075180A1

公开(公告)日：2021-03-11

申请号：US17085563

申请日：2020-10-30

申请人： IonQ, Inc. ,  University of Maryland, College Park

发明人： Kai HUDEK

IPC分类号： H01S3/02 ,  G02B27/10 ,  H01S3/00 ,  H01S3/10

摘要： The disclosure describes aspects of laser cavity optical alignment, and more particularly, in situ alignment of optical devices in an optical system for replacement or upgrade. In one aspect, a method for optical alignment in an optical system is described that includes providing, via a positioning system, an optical beam to measure surface features and position of a first device under test (DUT), removing the first DUT from the optical system, placing a second DUT in the optical system at substantially the same position from which the first DUT was removed, providing, via the positioning system, an optical beam to measure surface features and position of the second DUT, aligning the second DUT based on the measurements made of the first DUT and the second DUT, and verifying operation of the second DUT in the optical system. The DUT can be an optical device such as an output optical coupler.

公开(公告)号：US12130234B2

公开(公告)日：2024-10-29

申请号：US18540391

申请日：2023-12-14

申请人： IonQ, Inc.

发明人： Shantanu Debnath ,  Vandiver Chaplin

IPC分类号： G01J3/44 ,  G01N21/65 ,  G06N10/40

CPC分类号： G01N21/65 ,  G06N10/40

摘要： 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 the correction of light-shift effects in trapped-ion quantum gates. Techniques are described for light-shift correction of single qubit gates when the gates are implemented using counter-propagating Raman laser beams and when the gates are implemented using co-propagating Raman laser beams. Moreover, techniques are also described for light-shift correction of two-qubit gates.

公开(公告)号：US20240355573A1

公开(公告)日：2024-10-24

申请号：US18339809

申请日：2023-06-22

申请人： IonQ, Inc.

发明人： Ismail Volkan INLEK ,  Daniel ZAMBRANO

IPC分类号： H01J3/38 ,  G06N10/40 ,  H01J7/24 ,  H01J49/42

CPC分类号： H01J3/38 ,  G06N10/40 ,  H01J7/24 ,  H01J49/4245 ,  H01J49/4255

摘要： 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 provide a cold finger for use with a quantum information processing (QIP) system including a cryostat. The cold finger includes a planar base including a first surface proximate a cooling plate of the cryostat opposite a second surface; a finger including a first end coupled to the second surface of the planar base and a second end configured to engage an ion trap; and an isolation unit positioned above the cooling plate of the cryostat and including a dielectric crystal plate that is configured to isolate the ion trap from electrical noise generated by the cryostat when controlling a temperature of the ion trap.

公开(公告)号：US20240354628A1

公开(公告)日：2024-10-24

申请号：US18378938

申请日：2023-10-11

申请人： IONQ, INC.

发明人： Ananth Prakash KAUSHIK

IPC分类号： G06N10/60 ,  G06N10/40

CPC分类号： G06N10/60 ,  G06N10/40

摘要： A method of performing computation in a hybrid quantum-classical computing system includes mapping an optimization problem to a model Hamiltonian, selecting a set of variational parameters to construct a parametrized quantum circuit comprising an entangling circuit based on the model Hamiltonian and a mixing circuit, setting a quantum processor in an initial state, executing iterations, each iteration including applying the parametrized quantum circuit to the quantum processor to generate a trial state, measuring an expectation value of the model Hamiltonian, and replacing the set of the variational parameters with another set of variational parameters, and outputting the set of the variational parameters. The initial and trial states each are a superposition of states where the number qubits in the 1 state is constant, and the mixing circuit maintains the number of the qubits in the 1 state.