公开(公告)号：EP3886321A1

公开(公告)日：2021-09-29

申请号：EP20165267.4

申请日：2020-03-24

申请人： IQM Finland Oy

发明人： Hassel, Juha ,  Lähteenmäki, Pasi

IPC分类号： H03K3/38 ,  H03F19/00

摘要： A cryogenic integrated circuit or integrated module (1201) comprises a travelling wave parametric amplifier or a Josephson parametric amplifier (1001). An oscillator (1004) is configured to produce an oscillating drive signal and to couple said oscillating drive signal into said amplifier. A signal input (1203) couples input signals into said amplifier. A biasing input (1205) couples biasing signals into said oscillator. A signal output conveys output signals from said amplifier out of the cryogenic integrated circuit or integrated module (1201) .

公开(公告)号：EP3907669A1

公开(公告)日：2021-11-10

申请号：EP20173395.3

申请日：2020-05-07

申请人： IQM Finland Oy

发明人： Lähteenmäki, Pasi ,  Hassel, Juha

IPC分类号： G06N10/00

摘要： It is an objective to provide a quantum computing system and an arrangement for selectively shifting qubit resonance frequencies in a quantum computing system. According to an embodiment, an arrangement for selectively shifting qubit resonance frequencies in a quantum computing system comprises a plurality of qubits comprising at least a first qubit and a second qubit; a plurality of coupling control resonators comprising at least a first coupling control resonator and a second coupling control resonator; and a coupling control signal line. The first coupling control resonator may be configured to shift the resonance frequency of the first qubit when the coupling control signal comprises a frequency component in the resonance frequency band of the first coupling control resonator. An arrangement, a quantum computing system, a method, and a computer program product are provided.

公开(公告)号：EP4012627A1

公开(公告)日：2022-06-15

申请号：EP20213787.3

申请日：2020-12-14

申请人： IQM Finland Oy

发明人： Hyyppä, Eric ,  Möttönen, Mikko ,  Hassel, Juha ,  Tuorila, Jani

IPC分类号： G06N10/00

摘要： The invention is generally related to the field of quantum computing and particularly to a quantum processing unit comprising at least one superconducting qubit based on phase-biased linear and non-linear inductive-energy elements. A superconducting phase difference across the linear and non-linear inductive-energy elements is biased, for example, by an external magnetic field, such that quadratic potential energy terms of the linear and non-linear inductive-energy elements are cancelled at least partly. In a preferred embodiment, such cancellation is at least 30%. By so doing, it is possible to implement a high-coherence high-anharmonicity superconducting qubit design.

公开(公告)号：EP4012626A1

公开(公告)日：2022-06-15

申请号：EP20212481.4

申请日：2020-12-08

申请人： IQM Finland Oy

发明人： Hassel, Juha ,  Sevriuk, Vasilii ,  Heinsoo, Johannes ,  Tan, Kuan ,  Möttönen, Mikko

IPC分类号： G06N10/00

摘要： It is an objective to provide an arrangement for qubit readout and a quantum computing system. According to an embodiment, an arrangement (100) for qubit readout comprises: at least one qubit (101); a controllable energy relaxation structure (102) comprising at least one junction, wherein the controllable energy relaxation structure (102) is coupled to the at least one qubit (101), and is configured to absorb, in response to a control signal, at least one photon from the at least one qubit (101) via photon-assisted tunnelling of a charge through the at least one junction; a charge storage (104), configured to store the tunnelled charge; and a charge sensing structure (103) coupled to the charge storage (104), configured to provide a readout signal in response to detecting the tunnelled charge in the charge storage (104) .

公开(公告)号：EP3937093A1

公开(公告)日：2022-01-12

申请号：EP20185005.4

申请日：2020-07-09

申请人： IQM Finland Oy

发明人： Hassel, Juha ,  Liu, Wei ,  Sevriuk, Vasilii ,  Heinsoo, Johannes ,  Jenei, Mate ,  Venkatesh, Manjunath ,  Li, Tianyi ,  Chan, Kok Wai ,  Tan, Kuan Yen ,  Möttönen, Mikko

IPC分类号： G06N10/00 ,  H01L39/00

摘要： A quantum computing circuit comprises a first chip, with at least one qubit thereon, and a second chip, with at least other quantum circuit element than qubit thereon. Said first chip and said second chip are stacked together in a flip-chip configuration and attached to each other with bump bonding that comprises bonding bumps.

公开(公告)号：EP3869179A1

公开(公告)日：2021-08-25

申请号：EP20157942.2

申请日：2020-02-18

申请人： IQM Finland Oy

发明人： Chan, Kok Wai ,  Li, Tianyi ,  Hassel, Juha ,  Penttilä, Jari

IPC分类号： G01N1/42 ,  F17C3/08 ,  F25B9/12 ,  F25D19/00 ,  H01L23/44 ,  H05K7/20

摘要： A sample cell is provided for holding a sample to be placed in a cryogenically cooled environment. The sample cell comprises an airtight, openable and closable enclosure (101). Within said enclosure is a sample base (102) for receiving the sample. A refrigerator attachment (103) is provided for attaching the sample cell to a refrigerated body of a cryogenically cooled environment. The sample cell comprises a thermal connection (104) between the sample base (102) and the refrigerator attachment (103). One or more airtight connectors (105) are provided for establishing electric connections between inside and outside of said enclosure (101).