-
1.发明授权公开(公告)号：US12020121B2
公开(公告)日：2024-06-25
申请号：US18048268
申请日：2022-10-20
Applicant: IonQ, Inc.
Inventor： Shantanu Debnath , Vandiver Chaplin , Kristin M. Beck , Melissa Jameson , Jason Hieu Van Nguyen
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 techniques for removing or correcting for translation errors between a programmed strength and an applied strength of quantum gates. A method is described that includes determining, for each quantum gate in a quantum operation, a non-linearity between an applied strength of a laser beam used for the respective quantum gate and a programmed strength intended to be applied by the laser beam for the respective quantum gate. The method further includes linearizing the non-linearity for each quantum gate and storing linearization information in memory. Moreover, the method includes applying the linearization information to correct for the non-linearity when implementing each quantum gate as part of the quantum operation. A system is also described that is configured to implement the method described above.
-
公开(公告)号：US11152925B2
公开(公告)日：2021-10-19
申请号：US16990108
申请日：2020-08-11
Applicant: IONQ, INC.
Inventor： Shantanu Debnath , Jason M. Amini , Jwo-Sy Chen , Neal Pisenti
IPC: G06N99/00 , H03K3/38 , G06N10/00 , H03K19/195
Abstract: 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：US12130234B2
公开(公告)日：2024-10-29
申请号：US18540391
申请日：2023-12-14
Applicant: IonQ, Inc.
Inventor： Shantanu Debnath , Vandiver Chaplin
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 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.
-
Patent Agency Ranking
公开(公告)号：US11879847B2
公开(公告)日：2024-01-23
申请号：US18048300
申请日：2022-10-20
Applicant: IonQ, Inc.
Inventor： Shantanu Debnath , Vandiver Chaplin
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 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：US11954560B2
公开(公告)日：2024-04-09
申请号：US17069120
申请日：2020-10-13
Applicant: IonQ, Inc.
Inventor： Shantanu Debnath
CPC classification number: G06N10/00 , H01J49/0072 , G06F1/20
Abstract: Aspects of the present disclosure describe techniques for fast cooling of ion motion in a long chain using local motional modes. For example, a method is described for cooling down ions in a chain of ions that includes performing a cooling down sequence in which phonons are removed from the ions in the chain of ions by exciting and de-exciting local motional modes associated with individual ions, wherein sideband transitions that are part of the cooling down sequence are driven faster for the local motional modes than for collective motional modes for the same chain of ions; and completing the cooling down sequence when the local motional modes reach a ground state. A corresponding system and computer-readable storage medium for fast cooling of ion motion in a long chain using local motional modes are also described.
-
公开(公告)号：US11322343B2
公开(公告)日：2022-05-03
申请号：US16903174
申请日：2020-06-16
Applicant: IonQ, Inc.
Inventor： Jaime David Wong-Campos , Kai Hudek , Shantanu Debnath
Abstract: Aspects of the present disclosure describe techniques for optical alignment using a reflective dove prism. For example, a system for optical alignment is described that includes an assembly having a housing with three separate, reflecting structures positioned to produce three reflections of one or more laser beams or one or more images, and a controller configured to control a rotation of the assembly about a pivot point to produce a tilt in orientation of the one or more lasers beams or the one or more images that is twice an angle of rotation of the assembly. Another system and a method for aligning laser beams using a housing with three separate, reflecting structures in a trapped ion quantum information processing (QIP) system are also described.
-
公开(公告)号：US11556829B2
公开(公告)日：2023-01-17
申请号：US16514099
申请日：2019-07-17
Applicant: University of Maryland, College Park , IonQ, Inc.
Inventor： Shantanu Debnath , Norbert M. Linke , Christopher R. Monroe , Caroline Figgatt
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.
-
公开(公告)号：US10790807B1
公开(公告)日：2020-09-29
申请号：US16817482
申请日：2020-03-12
Applicant: IONQ, INC.
Inventor： Shantanu Debnath , Jason M. Amini , Jwo-Sy Chen , Neal Pisenti
IPC: G06N99/00 , H03K3/38 , G06N10/00 , H03K19/195
Abstract: 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.
-
-
-
-
-
-
-
Search Results
8
records
(took 0.013 seconds)
