公开(公告)号：US20240330726A1

公开(公告)日：2024-10-03

申请号：US18740726

申请日：2024-06-12

Applicant: Intel Corporation

Inventor： Florian Luethi ,  Hubert C. George ,  Felix Frederic Leonhard Borjans ,  Simon Schaal ,  Lester Lampert ,  Thomas Francis Watson ,  Jeanette M. Roberts ,  Jong Seok Park ,  Sushil Subramanian ,  Stefano Pellerano

IPC: G06N10/00 ,  H01L29/12

CPC classification number: G06N10/00 ,  H01L29/12

Abstract: An array of quantum dot qubits (e.g., an array of spin qubits) relies on a gradient magnetic field to ensure that the qubits are separated in frequency in order to be individually addressable. Furthermore, a strong magnetic field gradient is required to electrically drive the electric dipole spin resonance (EDSR) of the qubits. Quantum dot devices disclosed herein use microcoil arrangements for providing a gradient magnetic field, the microcoil arrangements integrated on the same chip (e.g., on the same die or wafer) as quantum dot qubits themselves. Unlike previous approaches to quantum dot formation and manipulation, various embodiments of the quantum dot devices disclosed herein may enable improved control over magnetic fields and their gradients to realize better frequency targeting of individual qubits, help minimize adverse effects of charge noise on qubit decoherence and provide good scalability in the number of quantum dots included in the device.

公开(公告)号：US12050966B2

公开(公告)日：2024-07-30

申请号：US17555717

申请日：2021-12-20

Applicant: Intel Corporation

Inventor： Florian Luethi ,  Hubert C. George ,  Felix Frederic Leonhard Borjans ,  Simon Schaal ,  Lester Lampert ,  Thomas Francis Watson ,  Jeanette M. Roberts ,  Jong Seok Park ,  Sushil Subramanian ,  Stefano Pellerano

IPC: G06N10/00 ,  H01L29/12

CPC classification number: G06N10/00 ,  H01L29/12

Abstract: An array of quantum dot qubits (e.g., an array of spin qubits) relies on a gradient magnetic field to ensure that the qubits are separated in frequency in order to be individually addressable. Furthermore, a strong magnetic field gradient is required to electrically drive the electric dipole spin resonance (EDSR) of the qubits. Quantum dot devices disclosed herein use microcoil arrangements for providing a gradient magnetic field, the microcoil arrangements integrated on the same chip (e.g., on the same die or wafer) as quantum dot qubits themselves. Unlike previous approaches to quantum dot formation and manipulation, various embodiments of the quantum dot devices disclosed herein may enable improved control over magnetic fields and their gradients to realize better frequency targeting of individual qubits, help minimize adverse effects of charge noise on qubit decoherence and provide good scalability in the number of quantum dots included in the device.

公开(公告)号：US20230196152A1

公开(公告)日：2023-06-22

申请号：US17555717

申请日：2021-12-20

Applicant: Intel Corporation

Inventor： Florian Luethi ,  Hubert C. George ,  Felix Frederic Leonhard Borjans ,  Simon Schaal ,  Lester Lampert ,  Thomas Francis Watson ,  Jeanette M. Roberts ,  Jong Seok Park ,  Sushil Subramanian ,  Stefano Pellerano

IPC: G06N10/00 ,  H01L29/12

CPC classification number: G06N10/00 ,  H01L29/12

Abstract: An array of quantum dot qubits (e.g., an array of spin qubits) relies on a gradient magnetic field to ensure that the qubits are separated in frequency in order to be individually addressable. Furthermore, a strong magnetic field gradient is required to electrically drive the electric dipole spin resonance (EDSR) of the qubits. Quantum dot devices disclosed herein use microcoil arrangements for providing a gradient magnetic field, the microcoil arrangements integrated on the same chip (e.g., on the same die or wafer) as quantum dot qubits themselves. Unlike previous approaches to quantum dot formation and manipulation, various embodiments of the quantum dot devices disclosed herein may enable improved control over magnetic fields and their gradients to realize better frequency targeting of individual qubits, help minimize adverse effects of charge noise on qubit decoherence and provide good scalability in the number of quantum dots included in the device.